TY  - JOUR
AU  - Tong, L.-N.
AU  - Deng, C.-L.
AU  - Matthes, F.
AU  - Müller, M.
AU  - Schneider, C. M.
TI  - Influence of MgO overlayers on the electronic states of bct Co(001) thin film grown on bcc Fe(001)/GaAs(001
JO  - Physical review / B
VL  - 73
IS  - 21
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-57442
SP  - 214401
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - The spin polarization of the valence band electronic states of strained bcc Co(001) and MgO/Co(001) thin films grown onto a bcc Fe(001) seed layer on GaAs(001) are investigated by employing spin-resolved photoemission spectroscopy. The experimental results are compared with the calculated energy band structure of bcc and bct Co(001), and discussed in the framework of the interband transition model, which allows one to ascribe the observed spectral features to bands of given spin and spatial symmetry. In contrast to the positive spin polarization observed at the MgO/Fe(001) interface, a large negative spin polarization of the electronic states at the Fermi level is observed for the MgO/Co/Fe/GaAs(001) system. Such a large negative spin polarization is attributed to a change in the energy band structure at the bct Co/bcc Fe(001) interface.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000238696200065
DO  - DOI:10.1103/PhysRevB.73.214401
UR  - https://juser.fz-juelich.de/record/57442
ER  -