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Anomalous Hall Effect in antiferromagnets

Seminar
Tuesday, 09.02.2016 10:00 to 11:30

Speakers: Karel Výborný (Institute of Physics ASCR)
Place: Meeting room, Building A, Institute of Physics ASCR, Cukrovarnická 10, Praha 6
Presented in English
Organisers: Department of Spintronics and Nanoelectronics

This is a Journal Club Series lecture concerning paper [4].

The common notion that the anomalous Hall effect (AHE) is propor- tional to magnetisation M suggests that antiferromagnets with M = 0 should exhibit no AHE. Despite this intuition, when certain symmetries are broken, AHE was still predicted [1] to appear in multi-sublattice antiferromagnets with M = 0 (such as IrMn3 [2] or Mn3Sn [3]). Re- cently, this prediction has been confirmed experimentally [4] and the magnitude of AHE was even found [5,6] to exceed that of ordinary ferromagnetic metals.

  • [1] R. Shindou and N. Nagaosa, Phys. Rev. Lett. 87, 116801 (2001).
  • [2] Hua Chen, Qian Niu and A.H. MacDonald, Phys. Rev. Lett. 112, 017205 (2014).
  • [3] J. Kübler and C. Felser, Europhys. Lett. 108, 67001 (2014).
  • [4] S. Nakatsuji, N. Kiyohara and T. Higo, Nature 527, 212 (2015).
  • [5] A. K. Nayak et al., arXiv1511.03128.
  • [6] N. Kiyohara and S. Nakatsuji, arXiv1511.04619.
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