Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session T43: Topological Antiferromagnets and Altermagnets
11:30 AM–2:30 PM,
Thursday, March 9, 2023
Room: Room 317
Sponsoring
Unit:
DMP
Chair: Yuhang Li, University of California, Riverside
Abstract: T43.00001 : Tuning of anomalous Hall effect by spin reorientation in a novel altermagnetic compound CrSb*
11:30 AM–11:42 AM
Presenter:
Suvadip Das
(George Mason University)
Authors:
Suvadip Das
(George Mason University)
Igor I Mazin
(George Mason University)
ferromagnetism) was discovered, one that is characteristic of zero magnetic moment and alternating
spin-momentum locking of energy bands, aptly named altermagnetism. Consideration of the spin
group symmetry reveals that CrSb belongs to a particular symmetry class adherent to this novel
magnetic phase. In this talk, we will report density functional calculation of the Anomalous Hall
conductivity (AHC) in CrSb, as a function of the collinear spin orientation in this material. We
discuss the contribution to the Hall conductivity from the detailed mapping of the Berry curvature
of the electronic bands. We emphasize that, contrary to common misconception, in such a case
where the net magnetization is determined by spin rotation and not domain population, AHC is
not proportional to the former.
*This research was supported by ARO through grant # W911NF2220173 and by DOE through grant # DE-SC0021089.
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