title: Electron localization or delocalization in incommensurate helical magnets.
abstract: 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.
authors.affiliation: Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. shu-t@spin.phys.s.u-tokyo.ac.jp
authors.forename: Shu
authors.initials: S
authors.lastname: Tanaka
authors.forename: Hosho
authors.initials: H
authors.lastname: Katsura
authors.forename: Naoto
authors.initials: N
authors.lastname: Nagaosa