Spin Seebeck effect in an (In,Ga)As quantum well with equal Rashba and Dresselhaus spin-orbit couplings

Capps, Jeremy; Marinescu, D. C.; Manolescu, Andrei

Spin Seebeck effect in an (In,Ga)As quantum well with equal Rashba and Dresselhaus spin-orbit couplings

Titill:	Spin Seebeck effect in an (In,Ga)As quantum well with equal Rashba and Dresselhaus spin-orbit couplings
Höfundur:	Capps, Jeremy Marinescu, D. C. Manolescu, Andrei orcid.org/0000-0002-0713-4664 3 höfundar Sýna færri höfunda
Útgáfa:	2016-02-09
Tungumál:	Enska
Umfang:	085307-1-085307-6
Háskóli/Stofnun:	Háskólinn í Reykjavík Reykjavik University
Svið:	Tækni- og verkfræðideild (HR) School of Science and Engineering (RU)
Birtist í:	Physical Review B;93(8)
ISSN:	2469-9950 2469-9969 (eISSN)
DOI:	10.1103/PhysRevB.93.085307
Efnisorð:	Magnetic fields; Waves; Semiconductors; Segulsvið; Bylgjufræði; Hálfleiðarar
URI:	https://hdl.handle.net/20.500.11815/875
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Tilvitnun: Capps, J., Marinescu, D. C., & Manolescu, A. (2016). Spin Seebeck effect in an (In, Ga)As quantum well with equal Rashba and Dresselhaus spin-orbit couplings. Physical Review B, 93(8), 085307. doi.org/10.1103/PhysRevB.93.085307
Útdráttur: We demonstrate that a spin-dependent Seebeck effect can be detected in quantum wells with zinc-blend structure with equal Rashba-Dresselhaus spin-orbit couplings. This theory is based on the establishment of an itinerant antiferromagnetic state, a low total-energy configuration realized in the presence of the Coulomb interaction enabled by the k=0 degeneracy of the opposite-spin single-particle energy spectra. Transport in this state is modeled by using the solutions of a Boltzmann equation obtained within the relaxation time approximation. Numerical estimates performed for realistic GaAs samples indicate that at low temperatures, the amplitude of the spin Seebeck coefficient can be increased by scattering on magnetic impurities.