This title appears in the Scientific Report :
2004
Please use the identifier:
http://hdl.handle.net/2128/23192 in citations.
Please use the identifier: http://dx.doi.org/10.1088/0953-8984/16/26/001 in citations.
Ballistic spin injection from Fe into ZnSe(001), (111), and (110), and into GaAs(001)
Ballistic spin injection from Fe into ZnSe(001), (111), and (110), and into GaAs(001)
We present first-principles calculations of ballistic spin injection in Fe/GaAs and Fe/ZnSe junctions with orientations (00 1), (111), and (I 10). We find that the symmetry mismatch of the Fe minority spin states with the semiconductor conduction states can lead to extremely high spin polarization o...
Saved in:
Personal Name(s): | Wunnicke, O. |
---|---|
Mavropoulos, Ph. / Zeller, R. / Dederichs, P. H. | |
Contributing Institute: |
Center of Nanoelectronic Systems for Information Technology; CNI Theorie III; IFF-TH-III |
Published in: | Journal of physics / Condensed matter, 16 (2004) S. 4643 - 4659 |
Imprint: |
Bristol
IOP Publ.
2004
|
Physical Description: |
4643 - 4659 |
DOI: |
10.1088/0953-8984/16/26/001 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Journal of Physics: Condensed Matter
16 |
Subject (ZB): | |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1088/0953-8984/16/26/001 in citations.
We present first-principles calculations of ballistic spin injection in Fe/GaAs and Fe/ZnSe junctions with orientations (00 1), (111), and (I 10). We find that the symmetry mismatch of the Fe minority spin states with the semiconductor conduction states can lead to extremely high spin polarization of the current through the (001) interface for hot and thermal injection processes. Such a symmetry mismatch does not exist for the (I 11) and (I 10) interfaces, where smaller spin injection efficiencies are found. The presence of interface states at the Fermi energy is found to lower the current spin polarization. |