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Dr.  Christoph Sürgers

Dr. Christoph Sürgers

Akad. Direktor
AG Wernsdorfer
RaumCS
Tel.+49 721 608-43456
christoph suergersFbx3∂kit edu

www.phi.kit.edu

Superconductivity and magnetism in thin metallic films, multilayers, and nanostructures

We study the electronic transport properties of metallic thin films and nanostructures. Currently we are focussing on the anomalous or topological Hall effect in ferro- and antiferromagnetic films and single crystals, on the superconductive proximity-effect between two- and threedimensional systems, on the conductance through  rare-earth atomic contacts, and on the spininjection and -manipulation in CMOS-compatible heterostructures.

  • Spininjection and spinmanipulation in CMOS-compatible heterostructures

This is a cooperative project between the Physikalische Institut (PHI) and the Institute of Semiconductortechnology (IHT) at the University of Stuttgart. The goal is the demonstration of spininjection, -detection and –manipulation in CMOS-compatible devices. Carbon-doped Mn5Si3 und Mn5Ge3 compounds with Curie temperatures of 350 K and 450 K, respectively, will be used as ferromagnetic electrodes for spininjection into Ge-  and Si-based semiconductor heterostructures. Samples will be prepared by epitaxial growth in ultra-high vacuum and characterized by electronic transport measurements (Hanle-Effekt), optical measurements, and measurements of the Spin-Seebeck effect. The project is supported by the DFG.

Experimental methods

  • Preparation of thin films and multilayers by electron-beam evaporation in UHV and by magnetron sputtering
  • Mechanically controlled break-junctions
  • In-situ characterization by electron diffraction and Auger electron spectroscopy
  • x-ray diffraction
  • Scanning tunneling microscopy and spectroscopy between 5 and 300 K
  • Electronic transport measurements (resistivity, Hall effect, electric-field effect) at low temperatures and in magnetic fields
Christoph Sürgers

 

Publications


2017
Phase separation and zero thermal expansion in antiperovskite Mn3Zn0.77Mn0.19N0.94: An in situ neutron diffraction investigation.
Deng, S.; Sun, Y.; Wu, H.; Shi, Z.; Wang, L.; Yan, J.; Shi, K.; Hu, P.; Diao, X.; Huang, Q.; Sürgers, C.; Wang, C.
2017. Scripta materialia, 146, 18-21. doi:10.1016/j.scriptamat.2017.10.031
Signature of f-electron conductance in α-Cer single-atom contacts.
Kuntz, S.; Berg, O.; Sürgers, C.; Löhneysen, H. von.
2017. Physical review / B, 96, 085120. doi:10.1103/PhysRevB.96.085120
Quasi-metallic behavior of ZnO grown by atomic layer deposition : The role of hydrogen.
Beh, H.; Hiller, D.; Bruns, M.; Welle, A.; Becker, H.-W.; Berghoff, B.; Sürgers, C.; Merz, R.; Zacharias, M.
2017. Journal of applied physics, 122 (2), Art. Nr. 025306. doi:10.1063/1.4994175
Thermoelectric effects in superconductor-ferromagnet tunnel junctions on europium sulfide.
Kolenda, S.; Sürgers, C.; Fischer, G.; Beckmann, D.
2017. Physical review / B, 95 (22), Art. Nr. 224505. doi:10.1103/PhysRevB.95.224505
15 cm-1 to 12 000 cm-1 spectral coverage without changing optics: Diamond beam splitter adaptation of an FTIR spectrometer.
Strelnikov, D.; Kern, B.; Sürgers, C.; Kappes, M. M.
2017. Review of scientific instruments, 88 (2), 023118. doi:10.1063/1.4976744
Switching of a large anomalous Hall effect between metamagnetic phases of a non-collinear antiferromagnet.
Sürgers, C.; Wolf, T.; Adelmann, P.; Kittler, W.; Fischer, G.; Löhneysen, H. von.
2017. Scientific reports, 7, Art.Nr.: 42982. doi:10.1038/srep42982
2016
Two-band superconductivity of bulk and surface states in Ag thin films on Nb.
Tomanic, T.; Schackert, M.; Wulfhekel, W.; Sürgers, C.; Löhneysen, H. v.
2016. Physical review / B, 94 (22), Art.Nr.: 220503. doi:10.1103/PhysRevB.94.220503
Controlled electromigration and oxidation of free-standing copper wires.
Hauser, J. S.; Schwichtenberg, J.; Marz, M.; Sürgers, C.; Seiler, A.; Gerhards, U.; Messerschmidt, F.; Hensel, A.; Dittmeyer, R.; Löhneysen, H. v.; Hoffmann-Vogel, R.
2016. Applied physics / A, 122, 1068. doi:10.1007/s00339-016-0600-z
Magnetostrictive Fe_73Ga_27 nanocontacts for low-field conductance switching.
Kannan, U. M.; Kuntz, S.; Berg, O.; Kittler, W.; Basumatary, H.; Chelvane, J. A.; Sürgers, C.; Jammalamadaka, S. N.
2016. Applied physics letters, 108, Art. Nr. 242408. doi:10.1063/1.4953873
Second-Harmonic Generation from ZnO/Al2O3 Nanolaminate Optical Metamaterials Grown by Atomic-Layer Deposition.
Wickberg, A.; Kieninger, C.; Sürgers, C.; Schlabach, S.; Mu, X.; Koos, C.; Wegener, M.
2016. Advanced optical materials, 4 (8), 1203-1208. doi:10.1002/adom.201600200
Anomalous Hall effect in the noncollinear antiferromagnet Mn5Si3.
Sürgers, C.; Kittler, W.; Wolf, T.; Löhneysen, H. von.
2016. AIP Advances, 6 (5), Art. Nr.: 055604. doi:10.1063/1.4943759
2015
Remote control of magnetostriction-based nanocontacts at room temperature.
Jammalamadaka, S. N.; Kuntz, S.; Berg, O.; Kittler, W.; Kannan, U. M.; Chelvane, J. A.; Sürgers, C.
2015. Scientific Reports, 5, 13621. doi:10.1038/srep13621
2014
Large topological Hall effect in the non-collinear phase of an antiferromagnet.
Sürgers, C.; Fischer, G.; Winkel, P.; Löhneysen, H. von.
2014. Nature Communications, 5, Art.Nr. 3400. doi:10.1038/ncomms4400
Fabrication and magnetic characterization of nanometer-sized ellipses of the ferromagnetic insulator EuS.
Wolf, M. J.; Sürgers, C.; Fischer, G.; Scherer, T.; Beckmann, D.
2014. Journal of Magnetism and Magnetic Materials, 368, 49-53. doi:10.1016/j.jmmm.2014.04.067
Magnetotransport in ferromagnetic Mn₅Ge₃, Mn₅Ge₃C₀̣₈ and Mn₅Si₃C₀̣₈ thin films.
Sürgers, C.; Fischer, G.; Winkel, P.; Löhneysen, H. von.
2014. Physical Review B - Condensed Matter and Materials Physics, 90 (10), Art.-Nr. 104421. doi:10.1103/PhysRevB.90.104421
Spin-polarized quasiparticle transport in exchange-split superconducting aluminum on europium sulfide.
Wolf, M. J.; Sürgers, C.; Fischer, G.; Beckmann, D.
2014. Physical Review B - Condensed Matter and Materials Physics, 90 (14), Art.-Nr. 144509. doi:10.1103/PhysRevB.90.144509
Hanle-effect measurements of spin injection from Mn5Ge3C0.8/Al2O3-contacts into degenerately doped Ge channels on Si.
Fischer, I. A.; Chang, L.-T.; Sürgers, C.; Rolseth, E.; Reiter, S.; Stefanov, S.; Chiussi, S.; Tang, J.; Wang, K. L.; Schulze, J.
2014. Applied Physics Letters, 105 (22), Article Nr. 222408. doi:10.1063/1.4903233
Temperature-dependent scanning tunneling spectroscopy on the Si(557)-Au surface.
Sauter, M.; Hoffmann, R.; Sürgers, C.; Löhneysen, H. V.
2014. Physical Review B - Condensed Matter and Materials Physics, 89 (7), 075406/1-6. doi:10.1103/PhysRevB.89.075406
2013
Mn5Ge3C0.8 Contacts for Spin Injection Into Ge.
Fischer, I. A.; Sürgers, C.; Petit, M.; Thanh, V. L.; Schulze, J.
2013. ECS Transactions, 58 (9), 29-36. doi:10.1149/05809.0029ecst
Low temperature thermoelectric properties of Cu intercalated TiSe2: a charge density wave material.
Bhatt, R.; Basu, R.; Bhattacharya, S.; Singh, A.; Aswal, D. K.; Gupta, S. K.; Okram, G. S.; Ganesan, V.; Venkateshwarlu, D.; Sürgers, C.; Navaneethan, M.; Hayakawa, Y.
2013. Applied Physics A: Materials Science and Processing, 111 (2), 465-470. doi:10.1007/s00339-012-7536-8
Growth of Pd4S, PdS and PdS2 films by controlled sulfurization of sputtered Pd on native oxide of Si.
Bhatt, R.; Bhattacharya, S.; Basu, R.; Singh, A.; Deshpande, U.; Sürgers, C.; Basu, S.; Aswal, D. K.; Gupta, S. K.
2013. Thin Solid Films, 539, 41-46. doi:10.1016/j.tsf.2013.04.143
Ferromagnetic Mn 5Ge3C0.8 contacts on Ge: work function and specific contact resistivity.
Fischer, I. A.; Gebauer, J.; Rolseth, E.; Winkel, P.; Chang, L.-T.; Wang, K. L.; Sürgers, C.; Schulze, J.
2013. Semiconductor Science and Technology, 28 (12), Art.-Nr. 125002. doi:10.1088/0268-1242/28/12/125002
Electronic disorder of P- and B-doped Si at the metal-insulator transition investigated by scanning tunnelling microscopy and electronic transport.
Sürgers, C.; Wenderoth, M.; Löser, K.; Garleff, J. K.; Ulbrich, R. G.; Lukas, M.; Löhneysen, H. von.
2013. New journal of physics, 15 (5), 055009/1-19. doi:10.1088/1367-2630/15/5/055009
Optical absorption in silicon layers in the presence of charge inversion/accumulation or ion implantation.
Alloatti, L.; Lauermann, M.; Sürgers, C.; Koos, C.; Freude, W.; Leuthold, J.
2013. Applied Physics Letters, 103 (5), 051104/1-5. doi:10.1063/1.4817255
2012
Magnetic properties of Cu-doped GaN grown by molecular beam epitaxy.
Ganz, P. R.; Fischer, G.; Sürgers, C.; Schaadt, D. M.
2012. Physical Review B - Condensed Matter and Materials Physics, 85 (16), Art.-Nr. 165204. doi:10.1103/PhysRevB.85.165204
Effect of cold working in a magnetic field on the shape of a ferromagnetic nanocontact.
Müller, M.; Montbrun, R.; Sürgers, C.; Löhneysen, H. von.
2012. Applied Physics Letters, 100 (20), 202402/1-5. doi:10.1063/1.4718307
Local-strain mapping on Ag(111) islands on Nb(110).
Tomanic, T.; Sürgers, C.; Heid, R.; Ortigoza, A.; Bohnen, K.-P.; Stöffler, D.; Löhneysen, H. von.
2012. Applied Physics Letters, 101 (6), 063111/1-4. doi:10.1063/1.4745011
Formation of copper oxide surface structures via pulse injection of air onto Cu(111) surfaces.
Perez Leon, C.; Sürgers, C.; von Löhneysen, H.
2012. Physical Review B, 85 (3), 035434/1-8. doi:10.1103/PhysRevB.85.035434
Experimental verification of contact-size estimates in point-contact spectroscopy on superconductor/ferromagnet heterocontacts.
Gramich, J.; Brenner, P.; Sürgers, C.; von Löhneysen, H.; Goll, G.
2012. Physical Review B, 86 (15), 155402/1-7. doi:10.1103/PhysRevB.86.155402
2011
Cu-doped nitrides: Promising candidates for a nitride based spin-aligner.
Ganz, P. R.; Fischer, G.; Sürgers, C.; Schaadt, D. M.
2011. Journal of Crystal Growth, 323 (1), 355-358. doi:10.1016/j.jcrysgro.2010.10.115
Switching the Conductance of Dy Nanocontacts by Magnetostriction.
Müller, M.; Montbrun, R.; Marz, M.; Fritsch, V.; Sürgers, C.; Löhneysen, H. von.
2011. Nano Letters, 11 (2), 574-578. doi:10.1021/nl103574m
Superconducting state of very thin Pd films deposited on a diluted insulating EuₓSr₁₋ₓS ferromagnet.
Cosceev, A.; Sürgers, C.; Boyen, H.-G.; Schweiss, P.; Löhneysen, H. von.
2011. Physical Review B, 83 (17), 174516/1-10. doi:10.1103/PhysRevB.83.174516
2010
Effect of magnetic flux penetration on the magnetic hysteresis loops of a Pt/Co/Pt triple layer on Nb(110).
Joshi, N.; Sürgers, C.; Löhneysen, H. von; Löffler, W.; Kalt, H.
2010. Journal of Physics: Conference Series, 200 (7), 072096. doi:10.1088/1742-6596/200/7/072096
Nonlocal versus local vortex dynamics in the transversal flux transformer effect.
Otto, F.; Bilušić, A.; Babić, D.; Vodolazov, D. Y.; Sürgers, C.; Strunk, C.
2010. Physical Review B - Condensed Matter and Materials Physics, 81 (17), Art. Nr. 174521. doi:10.1103/PhysRevB.81.174521
Preface: Selected invited contributions from the International Conference on Magnetism (Karlsruhe, Germany, 2631 July 2009).
Goll, G.; Löhneysen, H. von; Loidl, A.; Pruschke, T.; Richter, M.; Schultz, L.; Sürgers, C.; Wosnitza, J.
2010. Journal of Physics: Condensed Matter, 22 (16), 160301. doi:10.1088/0953-8984/22/16/160301
Reversal of Nonlocal Vortex Motion in the Regime of Strong Nonequilibrium.
Otto, F.; Bilušić, A.; Babić, D.; Vodolazov, D. Y.; Sürgers, C.; Strunk, C.
2010. Physical Review Letters, 104 (2), 027005. doi:10.1103/PhysRevLett.104.027005
Spintronics in metallic superconductor/ferromagnet hybrid structures.
Sürgers, C.; Singh, A.; Stokmaier, M.; Groll, G.; Perez-Willard, F.; Löhneysen, H. von.
2010. International journal of materials research, 101 (2), 164-174. doi:10.3139/146.110259
2009
Poly(3-hexylthiophene) based field-effect transistors with gate SiO2 dielectric modified by multi-layers of 3-aminopropyltrimethoxysilane.
Saxena, V.; Chauhan, A. K.; Padma, N.; Aswal, D. K.; Koiry, S. P.; Sen, S.; Tokas, R. B.; Gupta, S. K.; Sürgers, C.; Yakhmi, J. V.
2009. Thin Solid Films, 517 (21), 6124-6128. doi:10.1016/j.tsf.2009.05.031
Magnetism of carbon doped Mn5Si3 and Mn5Ge3 films.
Sürgers, C.; Potzger, K.; Fischer, G.
2009. Journal of Chemical Sciences, 121 (2), 173-176
STM investigation of large π-conjugated oligomers and tetrahydrofuran codeposited on Cu(111) by pulse injection.
Pérez León, C.; Sürgers, C.; Mayor, M.; Marz, M.; Hoffmann, R.; Löhneysen, H. von.
2009. The journal of physical chemistry <Washington, DC> / C, 113 (32), 14335-14340. doi:10.1021/jp904169c
2008
Effect of vortex-core size on the flux lattice in a mesoscopic superconducting strip.
Kokanović, I.; Helzel, A.; Babić, D.; Sürgers, C.; Strunk, C.
2008. Physical Review B - Condensed Matter and Materials Physics, 77 (17), 172504. doi:10.1103/PhysRevB.77.172504
Self-assembly of the 3-aminopropyltrimethoxysilane multilayers on Si and hysteretic current–voltage characteristics.
Chauhan, A. K.; Aswal, D. K.; Koiry, S. P.; Gupta, S. K.; Yakhmi, J. V.; Sürgers, C.; Guerin, D.; Lenfant, S.; Vuillaume, D.
2008. Applied Physics A: Materials Science and Processing, 90 (3), 581-589. doi:10.1007/s00339-007-4336-7
Growth of iron phthalocyanine nanoweb and nanobrush using molecular beam epitaxy.
Debnath, A. K.; Samanta, S.; Singh, A.; Aswal, D. K.; Gupta, S. K.; Yakhmi, J. V.; Deshpande, S. K.; Poswal, A. K.; Sürgers, C.
2008. Physica E: Low-dimensional Systems and Nanostructures, 41 (1), 154-163. doi:10.1016/j.physe.2008.06.022
Electronic transport in magnetically ordered Mn₅Si₃Cₓ films.
Löhneysen, H. v.; Gopalakrishnan, B.; Sürgers, C.; Singh, A.; Montbrun, R.; Uhlarz, M.
2008. Physical Review B, 77 (10), 104414/1 - 10. doi:10.1103/PhysRevB.77.104414
Magnetic order by C-ion implantation into Mn₅Si₃ and Mn₅Ge₃ and its lateral modification.
Sürgers, C.; Potzger, K.; Strache, T.; Möller, W.; Fischer, G.; Joshi, N.; Löhneysen, H. von.
2008. Applied Physics Letters, 93 (6), 062503/1 - 3. doi:10.1063/1.2969403
Size Dependence of Current Spin Polarization through Superconductor/Ferromagnet Nanocontacts.
Löhneysen, H. von; Stokmaier, M.; Goll, G.; Weissenberger, D.; Sürgers, C.
2008. Physical Review Letters, 101 (14), 147005/1 - 4. doi:10.1103/PhysRevLett.101.147005
2007
Photoluminescence microscopy of carbon nanotubes grown by chemical vapor deposition: Influence of external dielectric screening on optical transition energies.
Kiowski, O.; Lebedkin, S.; Hennrich, F.; Malik, S.; Rösner, H.; Arnold, K.; Sürgers, C.; Kappes, M. M.
2007. Physical Review B - Condensed Matter and Materials Physics, 75 (7), 075421/1-7. doi:10.1103/PhysRevB.75.075421
Proximity-induced superconductivity in Nb/Ag/Fe triple layers.
Sürgers, C.; Stalzer, H.; Cosceev, A.; Löhneysen, H. von.
2007. Journal of Magnetism and Magnetic Materials, 310 (2, Suppl. Part 3), e767-e768. doi:10.1016/j.jmmm.2006.10.833
Manipulating superconductivity in perpendicularly magnetized FSF triple layers.
Singh, A.; Sürgers, C.; Uhlarz, M.; Singh, S.; Löhneysen, H. von.
2007. Applied Physics A - Materials Science & Processing, 89 (3), 593-597. doi:10.1007/s00339-007-4186-3
Proximity effect between superconductors and ferromagnets.
Löhneysen, H. von; Beckmann, D.; Goll, G.; Willard, F. P.; Stalzer, H.; Stokmaier, M.; Sürgers, C.
2007. Physica C: Superconductivity and its Applications, 460-462 (Spec. Iss.), 322-326. doi:10.1016/j.physc.2007.03.388
1∕f flux flow noise due to a coexistence of qualitatively different vortex states.
Babić, D.; Bentner, J.; Sürgers, C.; Strunk, C.
2007. Physical Review / B - Condensed Matter and Materials Physics, 76 (13), 134515. doi:10.1103/PhysRevB.76.134515
Correlations between one-dimensional structures at the Si(557)-Au surface.
Sauter, M.; Hoffmann, R.; Sürgers, C.; Löhneysen, H. von.
2007. Physical Review B, 75 (19), 195436/1 - 5. doi:10.1103/PhysRevB.75.195436
Identification of P dopants at nonequivalent lattice sites of the Si(111)-(2×1) surface.
Sürgers, C.; Löhneysen, H. v.; Garleff, J. K.; Wenderoth, M.; Ulbrich, R. G.; Rohlfing, M.
2007. Physical Review B, 76 (12), 125322/1 - 5. doi:10.1103/PhysRevB.76.125322
Superconducting spin switch with perpendicular magnetic anisotropy.
Singh, A.; Sürgers, C.; Löhneysen, Hvon.
2007. Physical Review B, 75 (2), 024513/1 - 5. doi:10.1103/PhysRevB.75.024513
Competition between proximity-induced superconductivity and pair breaking: Ag sandwiched between Nb and Fe.
Sürgers, C.; Löhneysen, H. v.; Stalzer, H.; Cosceev, A.
2007. Physical Review B, 75 (22), 224506/1 - 4. doi:10.1103/PhysRevB.75.224506
Spin-polarized current versus stray field in a perpendicularly magnetized superconducting spin switch.
Singh, A.; Sürgers, C.; Hoffmann, R.; Löhneysen, Hvon; Ashworth, T. V.; Pilet, N.; Hug, H. J.
2007. Applied Physics Letters, 91 (15), 152504/1 - 3. doi:10.1063/1.2794424
2006
Fully ultrahigh-vacuum-compatible fabrication of submicrometer-spaced electrical contacts.
Gärtner, C.; Hoffman, R.; Pérez-Willard, F.; Sauter, M.; Sürgers, C.; Löhneysen, H. von.
2006. Review of Scientific Instruments, 77 (2), 026101/1-3. doi:10.1063/1.2163973
Erratum: Fully ultrahigh-vacuum-compatible fabrication of submicrometer- spaced electrical contacts (Review of Scientific Instruments (2006) 77 (026101)).
Gärtner, C.; Hoffmann, R.; Pérez-Willard, F.; Sauter, M.; Sürgers, C.; Löhneysen, H. von.
2006. Review of Scientific Instruments, 77 (9), 099901. doi:10.1063/1.2234857
Nonlocal vortex motion in mesoscopic amorphous Nb0.7Ge0.3 structures.
Helzel, A.; Kokanović, I.; Babić, D.; Litvin, L. V.; Rohlfing, F.; Otto, F.; Sürgers, C.; Strunk, C.
2006. Physical Review B - Condensed Matter and Materials Physics, 74 (22), 220510. doi:10.1103/PhysRevB.74.220510
Fully UHV compatible fabrication of submicrometer-spaced electrical contacts.
Hoffmann, R.; Gärtner, C.; Pérez-Willard, F.; Sauter, M.; Sürgers, C.; Löhneysen, H. v.
2006. Review of Scientific Instruments, 77 (2), 026101/1 - 3
Atomically resolved tunneling spectroscopy on Si(557)-Au.
Schöck, M.; Sürgers, C.; Löhneysen, H. von.
2006. Europhysics Letters, 74 (3), 473 - 478. doi:10.1209/epl/i2006-10009-9
Field-screening properties of proximity-coupled Nb/Ag double layers.
Löhneysen, H. v.; Stalzer, H.; Cosceev, A.; Sürgers, C.
2006. Europhysics Letters, 76 (1), 121-127. doi:10.1209/epl/i2006-10233-3
2005
Electrical spin injection in multiwall carbon nanotubes with transparent ferromagnetic contacts.
Sahoo, S.; Kontos, T.; Schönenberger, C.; Sürgers, C.
2005. Applied Physics Letters, 86 (11), 112109. doi:10.1063/1.1882761
Proximity effect between superconductors and ferromagnets: from thin films to nanostructures.
Löhneysen, H. von; Beckmann, D.; Pérez-Willard, F.; Schöck, M.; Strunk, C.; Sürgers, C.
2005. Annalen der Physik, 14 (9-10), 591-601. doi:10.1002/andp.200510154
Evidence for one-dimensional electron propagation on Si(111)-(2x1) from Coulomb blockade.
Löhneysen, H. von; Garleff, J. K.; Wenderoth, M.; Ulbrich, R. G.; Sürgers, C.
2005. Physical Review B, 72 (7), 073406/1 - 4. doi:10.1103/PhysRevB.72.073406
2004
Determining the current polarization on Al/Co nanostructured point contacts.
Löhneysen, H. von; Pérez-Willard, F.; Cuevas, J. C.; Sürgers, C.; Pfundstein, P.; Kopu, J.; Eschrig, M.
2004. Physical Review B, 69 (14), 140502/1 - 4. doi:10.1103/PhysRevB.69.140502
Inhomogeneous magnetization of a superconducting film measured with a gradiometer.
Löhneysen, H. von; Sürgers, C.; Stalzer, H.; Cosceev, A.
2004. Applied Physics Letters, 84 (9), 1522-1524. doi:10.1063/1.1655706
Electronic transport properties of bismuth nanobridges through sililcon-nitride membranes.
Pérez-Willard, F.; Sürgers, C.; Löhneysen, H. von; Pfundstein, P.
2004. Physica / E, 22 (4), 872-80. doi:10.1016/j.physe.2003.10.010
Determining the current polarization in Al/Co nanostructured point contacts.
Pérez-Willard, F.; Cuevas, J. C.; Sürgers, C.; Pfundstein, P.; Kopu, J.; Eschrig, M.; Löhneysen, H. von.
2004. Physical review / B, 69, 140502(R) 1
Electronic transport in ultrathin gold films on Si(111).
Klages, S.; Schöck, M.; Sürgers, C.; Löhneysen, H. von.
2004. Journal of low temperature physics, 137 (3-4), 509-22. doi:10.1023/B:JOLT.0000049068.94956.26
Effect of submicron holes on the vortex dynamcis of a superconducting microbridge.
Bentner, J.; Babic, D.; Sürgers, C.; Strunk, C.
2004. Physical review / B, 70 (18), 184516. doi:10.1103/PhysRevB.70.184516
Flux-flow instabilities in amorphous Nb0.7Ge0.3 microbridges.
Babic, D.; Bentner, J.; Sürgers, C.; Strunk, C.
2004. Physical review / B, 69 (9), 092510. doi:10.1103/PhysRevB.69.092510
2003
Preparation and structural characterization of ferromagnetic Mn₅Si₃Cₓ films.
Sürgers, C.; Gajdzik, M.; Fischer, G.; Löhneysen, H. von; Welter, E.; Attenkofer, K.
2003. Physical review B, 68 (17), 174423-1/8. doi:10.1103/PhysRevB.68.174423
STM and STS on single dopants and Au-induced chains at the Si (111) surface.
Sürgers, C.; Schöck, M.; Trappmann, T.; Löhneysen, H. von.
2003. Applied surface science, 212-213, 105-109. doi:10.1016/S0169-4332(03)00032-1
Structure and electronic properties of ultrathin gold films on vicinal silicon (111).
Schöck, M.; Sürgers, C.; Löhneysen, H. von.
2003. Thin solid films, 428 (1-2), 11-14. doi:10.1016/S0040-6090(02)01248-8
2002
Fabrication and superconducting properties of nanostructured SFS contacts.
Sürgers, C.; Hoss, T.; Schönenberger, C.; Strunk, C.
2002. Journal of magnetism and magnetic materials, 240 (1-3), 598-600. doi:10.1016/S0304-8853(01)00862-9
Local structural and magnetic properties of Mn₅Si₃Cₓ films.
Sürgers, C.; Löhneysen, H. von; Kelemen, M. T.; Dormann, E.; Brooks, M. S. S.
2002. Journal of magnetism and magnetic materials, 240 (1-3), 383-385. doi:10.1016/S0304-8853(01)00833-2
Perpendicular upper critical field of a proximity-coupled superconducting film.
Sidorenko, A. S.; Sürgers, C.; Löhneysen, H. von.
2002. Physica C: Superconductivity and its Applications, 370 (3), 197-204. doi:10.1016/S0921-4534(01)00929-7
UHV compatible nanostructuring technique for mesoscopic hybrid devices: application to superconductor/ferromagnet Josephson contacts.
Hoss, T.; Strunk, C.; Sürgers, C.; Schönenberger, C.
2002. Physica E: Low-Dimensional Systems and Nanostructures, 14 (3), 341-345. doi:10.1016/S1386-9477(01)00168-0
Vortex motion noise in micrometer-sized thin films of the amorphous Nb0.7Ge0.3 weak-pinning superconductor.
Babi, D.; Nussbaumer, T.; Strunk, C.; Schönenberger, C.; Sürgers, C.
2002. Physical review B, 66 (1), 014537-014540. doi:10.1103/PhysRevB.66.014537
2001
Oxygen-induced surface structure of Nb(1 1 0).
Suergers, C.; Schoeck, M.; Loehneysen, H. v.
2001. Surface Science, 471 (1-3), 209-218
Manganese hyperfine interaction in intermetallic Mn compounds.
Kelemen, M. T.; Sürgers, C.; Dormann, E.
2001. Journal of magnetism and magnetic materials, 226-230 (2), 1188-1189. doi:10.1016/S0304-8853(00)00738-1
2000
Upper critical field of Nb/Pd1-xFex/Nb triple layers.
Löhneysen, H. von; Schöck, M.; Sürgers, C.
2000. Physica B: Condensed Matter, 284 (Part 1), 499-500
Investigation of single boron acceptors at the cleaved Si:B(111) surface.
Schöck, M.; Sürgers, C.; Löhneysen, H. von.
2000. Physical Review B - Condensed Matter and Materials Physics, 61 (11), 7622-7627. doi:10.1103/PhysRevB.61.7622
Superconducting and magnetic properties of Nb/Pd1-xFex/Nb triple layers.
Schöck, M.; Sürgers, C.; Löhneysen, H. von.
2000. European Physical Journal B: Condensed Matter and Complex Systems, 14 (1), 1-10. doi:10.1007/s100510050100
Upper critical field of Nb/Pd1-xFex/Nb triple layers.
Loehneysen, H. v.; Schoeck, M.; Suergers, C.
2000. Physica B 284/288 (2000) S. 499-500
Distribution of manganese moments in magnetically ordered Mn5Si3C1.5 films.
Kelemen, M. T.; Gajdzik, M.; Sürgers, C.; Löhneysen, H. von; Dormann, E.
2000. Physics Letters / A: General, Atomic and Solid State Physics, 269 (4), 234-237. doi:10.1016/S0375-9601(00)00232-2
Ferromagnetism in carbon-doped Mn5Si3 films.
Gajdzik, M.; Sürgers, C.; Kelemen, M. T.; Löhneysen, H. von.
2000. Journal of applied physics, 87 (9), 6013-6015. doi:10.1063/1.372597
Strongly enhanced Curie temperature in carbon-doped Mn5Ge3 films.
Gajdzik, M.; Sürgers, C.; Kelemen, M. T.; Löhneysen, H. von.
2000. Journal of Magnetism and Magnetic Materials, 221 (3), 248-254. doi:10.1016/S0304-8853(00)00494-7
1999
Investigation of the (111) surface of P-doped Si by scanning tunneling microscopy.
Trappmann, T.; Sürgers, C.; Löhneysen, H. von.
1999. Applied Physics A, 68 (2), 167-172. doi:10.1007/s003390050872
1998
Growth and magnetism of Gd films on Y (0001) investigated by STM and MOKE.
Suergers, C.; Trappmann, T.; Gajdzik, M.; Loehneysen, H. v.
1998. In: Magnetism and electronic correlations in local-moment systems: rare-earth elements and compounds. Ed.: M. Donath. Singapore 1998. S. 255-270
Morphology and magnetic properties of submonolayer Gd films.
Gajdzik, M.; Trappmann, T.; Suergers, C.; Loehneysen, H. v.
1998. Phys. rev. B 57 (1998) S. 3525-3530
1997
Ion beam deposition and structural characterization of GMR spin valves.
Wang, S. X.; Bailey, W. E.; Sürgers, C.
1997. IEEE Transactions on Magnetics, 33 (3), 2369 -2374. doi:10.1109/20.573860
Ion beam deposition and structural characterization of GMR spin valves.
Wang, S. X.; Bailey, W. E.; Suergers, C.
1997. IEEE trans. on magnet. 33 (1997) S. 2369-2374
Scanning tunneling spectroscopy of rare-earth metals: gadolinium on yttrium.
Trappmann, T.; Gajdzik, M.; Sürgers, C.; Löhneysen, H. von.
1997. Europhysics Letters, 39 (2), 159-164. doi:10.1209/epl/i1997-00329-2
Observation of P donors on the Si(111) surface by scanning tunneling microscopy.
Trappmann, T.; Sürgers, C.; Löhneysen, H. von.
1997. Europhysics Letters, 38 (3), 177-182. doi:10.1209/epl/i1997-00222-0
Superconducting fractal Nb/Cu multilayers.
Sidorenko, A.; Suergers, C.; Trappmann, T.; Loehneysen, H. v.
1997. In: Fractal frontiers. Ed.: M.M. Novak. Singapore 1997. S. 265-272
1996
Effect of ion bombardment on the long-range chemical order in FePd films.
Sürgers, C.; Kay, E.; Wang, S. X.
1996. Journal of applied physics, 80 (10), 5753-5758
Upper critical field of periodic and fractal Nb/Cu multilayers.
Sidorenko, A.; Sürgers, C.; Trappmann, T.; Wosnitza, J.; Löhneysen, H. v.
1996. Czechoslovak Journal of Physics, 46 (Suppl. 2), 737-738. doi:10.1007/BF02583676
Superconducting properties of fractal Nb/Cu multilayers.
Sidorenko, A.; Sürgers, C.; Trappmann, T.; Löhneysen, H. von.
1996. Physical Review B, 53 (17), 11751-11756. doi:10.1103/PhysRevB.53.11751
Electronic transport and Kondo effect in La1-xCex films.
Roth, C.; Sürgers, C.; Löhneysen, H. von.
1996. Physical review B, 54 (5), 3454-3461
Structural parameters of multilayers from X-ray reflectivity: an easy-to-handle approach.
Manciu, M.; Dudas, L.; Sürgers, C.; Manaila, R.
1996. Journal of applied crystallography, 28 (2), 160-167. doi:10.1107/S0021889894010071
Ferromagnetism above room temperature in Mn-Si-C alloy films.
Gajdzik, M.; Sürgers, C.; Kelemen, M. T.; Hillebrands, B.; Löhneysen, H. v.
1996. Applied Physics Letters, 68 (22), 3189-3190. doi:10.1063/1.115820
1995
Magnetooptic measurements on ultrathin Gd films on Y.
Gajdzik, M.; Paschen, U.; Sürgers, C.; Löhneysen, H. von.
1995. Zeitschrift für Physik B: Condensed Matter, 98 (4), 541-547. doi:10.1007/BF01320855
1994
Effect of substrate temperature on the microstructure of thin niobium films.
Sürgers, C.; Strunk, C.; Löhneysen, H. von.
1994. Thin solid films, 239 (1), 51-56. doi:10.1016/0040-6090(94)90107-4
Transition temperature and critical fields of Nb/Gd layers.
Strunk, C.; Sürgers, C.; Röhberg, K.; Löhneysen, H. von.
1994. Physica B: Physics of Condensed Matter, 194-196 (2), 2405-2406. doi:10.1016/0921-4526(94)91702-7
Pair-breaking mechanisms in Nb/Gd/Nb films.
Strunk, C.; Paschen, U.; Sürgers, C.; Löhneysen, H. von.
1994. Physica B: Physics of Condensed Matter, 194-196 (2), 2403-2404. doi:10.1016/0921-4526(94)91701-9
Superconductivity in layered Nb/Gd films.
Strunk, C.; Sürgers, C.; Paschen, U.; Löhneysen, H. von.
1994. Physical Review B, 49 (6), 4053-4063. doi:10.1103/PhysRevB.49.4053
Dimensional crossover in fractal multilayered superconductors.
Sidorenko, A.; Sürgers, C.; Trappmann, T.; Löhneysen, H. von.
1994. Physica C: Superconductivity and its applications, 235-240 (4), 2615-2616. doi:10.1016/0921-4534(94)92528-3
1993
Magnetooptic measurements of Gd/Nb/Gd sandwiches.
Paschen, U.; Suergers, C.; Loehneysen, H. von.
1993. In: Proceedings of the International Conference on the Physics of Transition Metals, Darmstadt, Germany 1992. Ed.: P.M. Oppeneer. Singapore 1993. Vol. 1. S. 500-503. (International journal of modern physics. B 7,1/3,1.)
Magnetic properties of thin epitaxial Gd films on Nb.
Paschen, U.; Sürgers, C.; Löhneysen, H. von.
1993. Zeitschrift für Physik B Condensed Matter, 90 (3), 289-296. doi:10.1007/BF01433050
1992
Heavy-fermion behavior and spin-glass freezing in Si-stabilized amorphous alloys based on UPt3.
Wehrle, V.; Müller, T.; Schröder, A.; Sürgers, C.; Löhneysen, H. von.
1992. Zeitschrift für Physik B: Condensed Matter, 89 (2), 161-167. doi:10.1007/BF01320932
Growth and characterization of Nb/Gd multilayers for different substrate temperatures.
Sürgers, C.; Löhneysen, H. von.
1992. Thin solid films, 219 (1-2), 69-79. doi:10.1016/0040-6090(92)90725-Q
Effect of oxygen segregation on the surface structure of single-crystalline niobium films on sapphire.
Sürgers, C.; Löhneysen, H. von.
1992. Applied Physics A: Solids and Surfaces, 54 (4), 350-354. doi:10.1007/BF00324200
1991
Small-angle X-ray specular reflectivity on real metallic multilayers.
Manaila-Devenyi, R.; Suergers, C.; Menges, H.; Loehneysen, H. von.
1991. Rev. Roumaine de phys. 36 (1991) S. 735-756
1990
Specific heat of metastable Zr1-xSix alloys.
Flinspach, G.; Sürgers, C.; Löhneysen, H. v.
1990. Journal of Physics: Condensed Matter, 20 (2), 4559-4565. doi:10.1088/0953-8984/2/20/002
1989
Specific heat of mechanically alloyed amorphous Zr0.7Nio.3.
Sürgers, C.; Löhneysen, H. von; Schultz, L.
1989. Physical Review B, 40 (13), 8787-8790. doi:10.1103/PhysRevB.40.8787
1988
Low-temperature properties of amorphous (Mo1−x Ru x )0.8P0.2 alloys.
Sürgers, C.; Löhneysen, H. von.
1988. Zeitschrift für Physik B Condensed Matter, 70 (3), 361-369. doi:10.1007/BF01317243
1987
Search for universality of the density of states of low-energy excitations in amorphous metals.
Hofacker, M.; Sander, W.; Sürgers, C.; Löhneysen, H. v.
1987. Japanese Journal of Applied Physics Part 1-Regular Papers Brief Communications & Review Papers, 26 (Suppl. 26-3), 737-738