Electron Localization or Delocalization in Incommensurate Helical Magnets

Shu Tanaka, Hosho Katsura, and Naoto Nagaosa
Phys. Rev. Lett. 97, 116404 – Published 15 September 2006


The electronic states in incommensurate helical magnets are studied theoretically from the viewpoint of the localization or delocalization. It is found that in the multiband system with a relativistic spin-orbit interaction, the electronic wave functions show both an extended and localized nature along the helical axis depending on the orbital, helical wave number, and the direction of the plane on which spins rotate. The possible realization of this localization is discussed.

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  • Received 20 March 2006


©2006 American Physical Society

Authors & Affiliations

Shu Tanaka1,*, Hosho Katsura2, and Naoto Nagaosa2,3,4

  • 1Department of Physics, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
  • 2Department of Applied Physics, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
  • 3Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 4, Tsukuba 305-8562, Japan
  • 4CREST, Japan Science and Technology Agency (JST), Saitama, 332-0012, Japan

  • *Electronic address: shu-t@spin.phys.s.u-tokyo.ac.jp

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Vol. 97, Iss. 11 — 15 September 2006

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