title: Electronic structure of charge- and spin-controlled Sr(1-(x+y))La(x+y)Ti(1-x)Cr(x)O3.
abstract: We present the electronic structure of Sr(1-(x+y))La(x+y)Ti(1-x)Cr(x)O3 investigated by high-resolution photoemission spectroscopy. In the vicinity of the Fermi level, it was found that the electronic structure was composed of a Cr 3d local state with the t(2g)3 configuration and a Ti 3d itinerant state. The energy levels of these Cr and Ti 3d states are well interpreted by the difference of the charge-transfer energy of both ions. The spectral weight of the Cr 3d state is completely proportional to the spin concentration x irrespective of the carrier concentration y, indicating that the spin density can be controlled by x as desired. In contrast, the spectral weight of the Ti 3d state is not proportional to y, depending on the amount of Cr doping.
authors.affiliation: Department of Applied Physics, Tokyo University of Science, Shinjuku-ku, Tokyo 162-8601, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Iwasawa
authors.forename: K
authors.initials: K
authors.lastname: Yamakawa
authors.forename: T
authors.initials: T
authors.lastname: Saitoh
authors.forename: J
authors.initials: J
authors.lastname: Inaba
authors.forename: T
authors.initials: T
authors.lastname: Katsufuji
authors.forename: M
authors.initials: M
authors.lastname: Higashiguchi
authors.forename: K
authors.initials: K
authors.lastname: Shimada
authors.forename: H
authors.initials: H
authors.lastname: Namatame
authors.forename: M
authors.initials: M
authors.lastname: Taniguchi