Spin relaxation near the metal-insulator transition: Dominance of the Dresselhaus spin-orbit coupling

We identify the Dresselhaus spin-orbit coupling as the source of the dominant spin-relaxation mechanism in the impurity band of a wide class of n-doped zinc blende semiconductors. The Dresselhaus hopping terms are derived and incorporated into a tight-binding model of impurity sites, and they are sh...

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Autores principales: Intronati, Guido A., Tamborenea, Pablo Ignacio
Publicado: 2012
Materias:
Experimental values
Finite size scaling
Hopping terms
Impurity bands
N-doped
Spin relaxation
Spin-orbit couplings
Tight binding model
Zincblende semiconductors
Binding sites
Metal insulator boundaries
Semiconductor insulator boundaries
Metal insulator transition
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v108_n1_p_Intronati
http://hdl.handle.net/20.500.12110/paper_00319007_v108_n1_p_Intronati
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00319007_v108_n1_p_Intronati
record_format dspace
spelling paper:paper_00319007_v108_n1_p_Intronati2023-06-08T14:58:00Z Spin relaxation near the metal-insulator transition: Dominance of the Dresselhaus spin-orbit coupling Intronati, Guido A. Tamborenea, Pablo Ignacio Experimental values Finite size scaling Hopping terms Impurity bands N-doped Spin relaxation Spin-orbit couplings Tight binding model Zincblende semiconductors Binding sites Metal insulator boundaries Semiconductor insulator boundaries Metal insulator transition We identify the Dresselhaus spin-orbit coupling as the source of the dominant spin-relaxation mechanism in the impurity band of a wide class of n-doped zinc blende semiconductors. The Dresselhaus hopping terms are derived and incorporated into a tight-binding model of impurity sites, and they are shown to unexpectedly dominate the spin relaxation, leading to spin-relaxation times in good agreement with experimental values. This conclusion is drawn from two complementary approaches: an analytical diffusive-evolution calculation and a numerical finite-size scaling study of the spin-relaxation time. © 2012 American Physical Society. Fil:Intronati, G.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tamborenea, P.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v108_n1_p_Intronati http://hdl.handle.net/20.500.12110/paper_00319007_v108_n1_p_Intronati
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Experimental values
Finite size scaling
Hopping terms
Impurity bands
N-doped
Spin relaxation
Spin-orbit couplings
Tight binding model
Zincblende semiconductors
Binding sites
Metal insulator boundaries
Semiconductor insulator boundaries
Metal insulator transition
spellingShingle Experimental values
Finite size scaling
Hopping terms
Impurity bands
N-doped
Spin relaxation
Spin-orbit couplings
Tight binding model
Zincblende semiconductors
Binding sites
Metal insulator boundaries
Semiconductor insulator boundaries
Metal insulator transition
Intronati, Guido A.
Tamborenea, Pablo Ignacio
Spin relaxation near the metal-insulator transition: Dominance of the Dresselhaus spin-orbit coupling
topic_facet Experimental values
Finite size scaling
Hopping terms
Impurity bands
N-doped
Spin relaxation
Spin-orbit couplings
Tight binding model
Zincblende semiconductors
Binding sites
Metal insulator boundaries
Semiconductor insulator boundaries
Metal insulator transition
description We identify the Dresselhaus spin-orbit coupling as the source of the dominant spin-relaxation mechanism in the impurity band of a wide class of n-doped zinc blende semiconductors. The Dresselhaus hopping terms are derived and incorporated into a tight-binding model of impurity sites, and they are shown to unexpectedly dominate the spin relaxation, leading to spin-relaxation times in good agreement with experimental values. This conclusion is drawn from two complementary approaches: an analytical diffusive-evolution calculation and a numerical finite-size scaling study of the spin-relaxation time. © 2012 American Physical Society.
author Intronati, Guido A.
Tamborenea, Pablo Ignacio
author_facet Intronati, Guido A.
Tamborenea, Pablo Ignacio
author_sort Intronati, Guido A.
title Spin relaxation near the metal-insulator transition: Dominance of the Dresselhaus spin-orbit coupling
title_short Spin relaxation near the metal-insulator transition: Dominance of the Dresselhaus spin-orbit coupling
title_full Spin relaxation near the metal-insulator transition: Dominance of the Dresselhaus spin-orbit coupling
title_fullStr Spin relaxation near the metal-insulator transition: Dominance of the Dresselhaus spin-orbit coupling
title_full_unstemmed Spin relaxation near the metal-insulator transition: Dominance of the Dresselhaus spin-orbit coupling
title_sort spin relaxation near the metal-insulator transition: dominance of the dresselhaus spin-orbit coupling
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v108_n1_p_Intronati
http://hdl.handle.net/20.500.12110/paper_00319007_v108_n1_p_Intronati
work_keys_str_mv AT intronatiguidoa spinrelaxationnearthemetalinsulatortransitiondominanceofthedresselhausspinorbitcoupling
AT tamboreneapabloignacio spinrelaxationnearthemetalinsulatortransitiondominanceofthedresselhausspinorbitcoupling
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