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Abstract:

We search for the uniform Hartree-Fock ground state of the two-dimensional electron gas formed in semiconductor heterostructures including the Rashba spin-orbit interaction. We identify two competing quantum phases: a ferromagnetic one with partial spin polarization in the perpendicular direction and a paramagnetic one with in-plane spin. We present a phase diagram in terms of the relative strengths of the Rashba to the Coulomb interaction and the electron density. We compare our theoretical description with existing experimental results obtained in GaAs-AlGaAs heterostructures. © 2008 The American Physical Society.

Registro:

Documento: Artículo
Título:Hartree-Fock ground state of the two-dimensional electron gas with Rashba spin-orbit interaction
Autor:Juri, L.O.; Tamborenea, P.I.
Filiación:Departamento de Física J. J. Giambiagi, Universidad de Buenos Aires, Pabellón I, C1428EHA Ciudad de Buenos Aires, Argentina
Año:2008
Volumen:77
Número:23
DOI: http://dx.doi.org/10.1103/PhysRevB.77.233310
Título revista:Physical Review B - Condensed Matter and Materials Physics
Título revista abreviado:Phys. Rev. B Condens. Matter Mater. Phys.
ISSN:10980121
CODEN:PRBMD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v77_n23_p_Juri

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  • The rs dependence of xc may be summarized as follows: (i) in the OP phase xc =0 because only the lower branch is occupied, (ii) in the IP phase at high density, on the contrary, for given p, xc decreases monotonically as rs increases due to the occupancy of both branches, and (iii) xc increases monotonically in the IP phase at low density since only the lower branch is occupied and kmin → kmax when rs increases; Ghosh, A., Ford, C.J.B., Pepper, M., Beere, H.E., Ritchie, D.A., (2004) Phys. Rev. Lett., 92, p. 116601. , PRLTAO 0031-9007 10.1103/PhysRevLett.92.116601
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Citas:

---------- APA ----------
Juri, L.O. & Tamborenea, P.I. (2008) . Hartree-Fock ground state of the two-dimensional electron gas with Rashba spin-orbit interaction. Physical Review B - Condensed Matter and Materials Physics, 77(23).
http://dx.doi.org/10.1103/PhysRevB.77.233310
---------- CHICAGO ----------
Juri, L.O., Tamborenea, P.I. "Hartree-Fock ground state of the two-dimensional electron gas with Rashba spin-orbit interaction" . Physical Review B - Condensed Matter and Materials Physics 77, no. 23 (2008).
http://dx.doi.org/10.1103/PhysRevB.77.233310
---------- MLA ----------
Juri, L.O., Tamborenea, P.I. "Hartree-Fock ground state of the two-dimensional electron gas with Rashba spin-orbit interaction" . Physical Review B - Condensed Matter and Materials Physics, vol. 77, no. 23, 2008.
http://dx.doi.org/10.1103/PhysRevB.77.233310
---------- VANCOUVER ----------
Juri, L.O., Tamborenea, P.I. Hartree-Fock ground state of the two-dimensional electron gas with Rashba spin-orbit interaction. Phys. Rev. B Condens. Matter Mater. Phys. 2008;77(23).
http://dx.doi.org/10.1103/PhysRevB.77.233310