Spin-resolved photoemission study of photohole lifetimes in ferromagnetic gadolinium
- 4 June 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 65 (21) , 212409
- https://doi.org/10.1103/physrevb.65.212409
Abstract
High-resolution spin-resolved photoemission is used to probe the decay channels available to a photohole created in a Gd(0001) surface state. The photoemission linewidths show that at low temperatures, the lifetime of a majority-spin hole is predominantly limited by electron-phonon scattering and that of a minority-spin hole by electron-magnon scattering. With increasing temperature this state shows both spin-mixing behavior reflecting the exchange of magnons and a reduced exchange splitting.Keywords
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