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Volumn 78, Issue 5, 2008, Pages

Spin injection from Fe into Si(001): Ab initio calculations and role of the Si complex band structure

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EID: 50849107074     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.78.054446     Document Type: Article
Times cited : (21)

References (35)
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    • As was discussed previous papers on Fe/GaAs and Fe/ZnSe (Refs.) the polarization at k =0 may be less than 100%, because the point group rotational symmetry around the [001] axis is C4v for Fe but C2v for the zinc-blende or diamond structure. Thus, minority-spin Fe states of Δ 2′ symmetry (dxy character) at EF can weakly couple to semiconductor states of Δ1 symmetry. This weak coupling was found (Ref.) to result in resonant interface states penetrating the Schottky barrier, which under certain conditions reduced P Γ̄ by 10-20%. Such a strong contribution from interface states is not observed in Fe/Si(001).
    • As was discussed previous papers on Fe/GaAs and Fe/ZnSe (Refs.) the polarization at k =0 may be less than 100%, because the point group rotational symmetry around the [001] axis is C4v for Fe but C2v for the zinc-blende or diamond structure. Thus, minority-spin Fe states of Δ 2′ symmetry (dxy character) at EF can weakly couple to semiconductor states of Δ1 symmetry. This weak coupling was found (Ref.) to result in resonant interface states penetrating the Schottky barrier, which under certain conditions reduced P Γ̄ by 10-20%. Such a strong contribution from interface states is not observed in Fe/Si(001).
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    • Such strain is experimentally feasible, and has the additional advantage of achieving improved mobility. See, e.g., APPLAB 0003-6951 10.1063/1.2431702
    • Such strain is experimentally feasible, and has the additional advantage of achieving improved mobility. See, e.g., D. Buca, B. Hollander, S. Feste, St. Lenk, H. Trinkaus, S. Mantl, R. Loo, and M. Caymax, Appl. Phys. Lett. APPLAB 0003-6951 10.1063/1.2431702 90, 032108 (2007).
    • (2007) Appl. Phys. Lett. , vol.90 , pp. 032108
    • Buca, D.1    Hollander, B.2    Feste, S.3    St. Lenk4    Trinkaus, H.5    Mantl, S.6    Loo, R.7    Caymax, M.8
  • 35
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    • Dery, H.1    Sham, L.J.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.