NDLI: Spin-splitting enhanced by many-body effects in a two-dimensional electron gas in the presence of the Rashba spin

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Spin-splitting enhanced by many-body effects in a two-dimensional electron gas in the presence of the Rashba spin–orbit interaction

Content Provider	Scilit
Author	Yang, C. H. Xu, W. Zeng, Z. Tang, C. S.
Copyright Year	2006
Description	Journal: Journal of Physics: Condensed Matter We present a theoretical study on how many-body effects, especially the exchange interaction, can affect the spin-splitting of a two-dimensional electron gas (2DEG) in the presence of the Rashba spin–orbit interaction. The standard Hartree–Fock approximation and Green's function approach are employed to calculate self-consistently the energy spectrum and density of states of a spin-split 2DEG realized from an InGaAs/InAlAs heterojunction. We find that although the Hartree interaction affects rather weakly the self-energy of a quasi-particle, the presence of the exchange (Fock) interaction can significantly enhance the spin-splitting of a 2DEG on top of the Rashba effect. The main physical reasons for this important phenomenon are examined and discussed.
Related Links	http://iopscience.iop.org/article/10.1088/0953-8984/18/27/004/pdf
Ending Page	6212
Page Count	12
Starting Page	6201
ISSN	09538984
e-ISSN	1361648X
DOI	10.1088/0953-8984/18/27/004
Journal	Journal of Physics: Condensed Matter
Issue Number	27
Volume Number	18
Language	English
Publisher	IOP Publishing
Publisher Date	2006-06-23
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics: Condensed Matter Spin Orbit Interaction Two Dimensional Electron Gas Exchange Interaction Hartree Fock Approximation
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science

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