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Magnons in ultrathin films with spontaneous skyrmion lattice

Magnons in ultrathin films with spontaneous skyrmion lattice
Stellenausschreibung:

Master Thesis within the Heisenberg Spin-dynamics Group, PHI, KIT

Links:
Stellenart:

Masterarbeit

Kontaktperson: Dr. Khalil Zakeri Lori

 

A magnon wave-packet propagating in an ultrathin films
A magnon wave-packet propagating in an ultrathin film. The wave-packet is constructed by using the experimentally measured parameters
At the interface of an ultrathin film grown on a nonmagnetic substrate the translational symmetry is broken. The absence of the translational symmetry in the presence of a large spin−orbit coupling leads to a non-zero antisymmetric exchange interaction, known as Dzyaloshinskii−Moriya (DM) interaction. It has been shown that the DM interaction can stabilize a chiral spin texture with whirling structures, known as skyrmion. Skyrmions have been intensively investigated during the last few years because of their potential applications in spintronics.

 

The focus of this project is to investigate the magnons in a nano-skyrmionic lattice, formed in an ultrathin film, in order to experimentally understand the effect of the magnon−skyrmion interaction on the magnons' properties.

The sample preparation and all the analysis will be performed under ultra-high vacuum. The magnetic excitations shall be investigated by our unique spin-polarized high-resolution electron energy loss spectrometer, recently launched at the Physikalisches Institut.

Please contact khalil.zakeri@partner.kit.edu for details and applications.

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