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, G.A., Tamborenea, P.I., Weinmann, D., Jalabert, R.A.
Formato: JOUR
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: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 todo:paper_00319007_v108_n1_p_Intronati
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spelling todo:paper_00319007_v108_n1_p_Intronati2023-10-03T14:42:17Z Spin relaxation near the metal-insulator transition: Dominance of the Dresselhaus spin-orbit coupling Intronati, G.A. Tamborenea, P.I. Weinmann, D. Jalabert, R.A. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, G.A.
Tamborenea, P.I.
Weinmann, D.
Jalabert, R.A.
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.
format JOUR
author Intronati, G.A.
Tamborenea, P.I.
Weinmann, D.
Jalabert, R.A.
author_facet Intronati, G.A.
Tamborenea, P.I.
Weinmann, D.
Jalabert, R.A.
author_sort Intronati, G.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
url http://hdl.handle.net/20.500.12110/paper_00319007_v108_n1_p_Intronati
work_keys_str_mv AT intronatiga spinrelaxationnearthemetalinsulatortransitiondominanceofthedresselhausspinorbitcoupling
AT tamboreneapi spinrelaxationnearthemetalinsulatortransitiondominanceofthedresselhausspinorbitcoupling
AT weinmannd spinrelaxationnearthemetalinsulatortransitiondominanceofthedresselhausspinorbitcoupling
AT jalabertra spinrelaxationnearthemetalinsulatortransitiondominanceofthedresselhausspinorbitcoupling
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