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ETSF online seminar by Kisung Kang: Friday June ... (No replies)

berger
2 years ago
berger 2 years ago
Dear colleagues,
 
The next ETSF seminar will be given by Kisung Kang from the Fritz-Haber-Institut (Berlin) on Friday June 24 at 14:00 CEST. 
The title of the talk is “Magnetic properties and energy dispersion of metallic antiferromagnets”. 
Below you will find an abstract of the seminar.
 
All ETSF members will receive an email with a zoom link a couple of days before the seminar.
If you are not an ETSF member and you would like to follow the seminar, please send an email to [email protected].
 
Best wishes,
Arjan Berger
 
 
Abstract:
 
The first demonstration of electrical switching in metallic antiferromagnets in 2016 [1] has drawn our attention, and it has become new candidate material for future magnetic memory devices [2]. However, the majority of underlying physics for their unique properties is still under the veil. This work with first-principles methods investigates the ground-state magnetic interactions and quasiparticle energy dispersion relations to explain the magnetic structure and predict the magnetic properties of metallic antiferromagnets. Quantification of exchange interactions and magnetocrystalline anisotropy enables the calculation of the magnon dispersion of metallic antiferromagnets, leading to the estimation of their Néel temperature and the switching speed. In addition, we found the importance of magnetic dipole-dipole interaction in magnetocrystalline anisotropy energy. Comparison with experimental works provides a comprehensive understanding of the unique magnetic properties of metallic antiferromagnets.
 
[1] P. Wadleyet al. Science 351, 587 (2016)
[2] S. A. Siddiqui et al. J. Appl. Phys. 128, 040904 (2020)



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Ab initio (from electronic structure) calculation of complex processes in materials