title: Interface electronic structure at the topological insulator-ferrimagnetic insulator junction.
abstract: An interface electron state at the junction between a three-dimensional topological insulator film, Bi2Se3, and a ferrimagnetic insulator film, Y3Fe5O12(YIG), was investigated by measurements of angle-resolved photoelectron spectroscopy and x-ray absorption magnetic circular dichroism. The surface state of the Bi2Se3film was directly observed and localized 3d spin states of the Fe3+in the YIG film were confirmed. The proximity effect is likely described in terms of the exchange interaction between the localized Fe 3d electrons in the YIG film and delocalized electrons of the surface and bulk states in the Bi2Se3film.
authors.affiliation: Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Kubota
authors.forename: K
authors.initials: K
authors.lastname: Murata
authors.forename: J
authors.initials: J
authors.lastname: Miyawaki
authors.forename: K
authors.initials: K
authors.lastname: Ozawa
authors.forename: M C
authors.initials: MC
authors.lastname: Onbasli
authors.forename: T
authors.initials: T
authors.lastname: Shirasawa
authors.forename: B
authors.initials: B
authors.lastname: Feng
authors.forename: Sh
authors.initials: S
authors.lastname: Yamamoto
authors.forename: R-Y
authors.initials: RY
authors.lastname: Liu
authors.forename: S
authors.initials: S
authors.lastname: Yamamoto
authors.forename: S K
authors.initials: SK
authors.lastname: Mahatha
authors.forename: P
authors.initials: P
authors.lastname: Sheverdyaeva
authors.forename: P
authors.initials: P
authors.lastname: Moras
authors.forename: C A
authors.initials: CA
authors.lastname: Ross
authors.forename: S
authors.initials: S
authors.lastname: Suga
authors.forename: Y
authors.initials: Y
authors.lastname: Harada
authors.forename: K L
authors.initials: KL
authors.lastname: Wang
authors.forename: I
authors.initials: I
authors.lastname: Matsuda