Wave-vector-dependent exchange splitting in a local moment system

Authors

C. Waldfried, University of Nebraska-Lincoln
T. McAvoy, University of Nebraska-Lincoln
D. Welipitiya, University of Nebraska-Lincoln
Takashi Komesu, University of Nebraska-LincolnFollow
Peter A. Dowben, University of Nebraska-LincolnFollow
Elio Vescovo, Brookhaven National LaboratoryFollow

Date of this Version

9-15-1998

Comments

Published American Physical Society. Copyright 1998. Permission to use. Phys. Rev. B 58 (1998) 7434-7442. http://url-address

Abstract

Wave-vector-dependent exchange splitting in a local moment system The electronic structure of strained thin films of Gd has been studied with spin- and angle-resolved photoemission and spin-polarized inverse photoemission. The spin-dependent electronic structure is dominated by a very distinct k dependence of the exchange splitting. The surface magnetic structure is observed to be different from that of the bulk, as indicated by the different electronic structure and a much higher surface Curie temperature. The 4% strain within the Gd films results in an enhanced Curie temperature.