Initial/final state selection of the spin polarization in electron tunneling across an epitaxial Fe/GaAs(001) interface

Spin dependent electron transport across epitaxial FeGaAs (001) interfaces has been investigated using photoexcitation techniques. Spin filtering is observed in the forward bias regime and its sign is switched by using different photon energies. First principles calculations suggest that the spin po...

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Główni autorzy: Kurebayashi, H, Steinmuller, S, Laloe, J, Trypiniotis, T, Easton, S, Ionescu, A, Yates, JR, Bland, J
Format: Journal article
Język:English
Wydane: 2007
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author Kurebayashi, H
Steinmuller, S
Laloe, J
Trypiniotis, T
Easton, S
Ionescu, A
Yates, JR
Bland, J
author_facet Kurebayashi, H
Steinmuller, S
Laloe, J
Trypiniotis, T
Easton, S
Ionescu, A
Yates, JR
Bland, J
author_sort Kurebayashi, H
collection OXFORD
description Spin dependent electron transport across epitaxial FeGaAs (001) interfaces has been investigated using photoexcitation techniques. Spin filtering is observed in the forward bias regime and its sign is switched by using different photon energies. First principles calculations suggest that the spin polarization of the Fe layer is positive within the energy region into which spin polarized electrons tunnel. The authors attribute this sign switching to the initial and final states of the electrons tunneling across the interface, whose spin polarizations are determined by the selection rules in GaAs during photoexcitation and spin polarization of the Fe(001) layer, respectively. © 2007 American Institute of Physics.
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spelling oxford-uuid:443f906e-2bf8-40db-8819-ac6fbc1cd7d42022-03-26T15:00:29ZInitial/final state selection of the spin polarization in electron tunneling across an epitaxial Fe/GaAs(001) interfaceJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:443f906e-2bf8-40db-8819-ac6fbc1cd7d4EnglishSymplectic Elements at Oxford2007Kurebayashi, HSteinmuller, SLaloe, JTrypiniotis, TEaston, SIonescu, AYates, JRBland, JSpin dependent electron transport across epitaxial FeGaAs (001) interfaces has been investigated using photoexcitation techniques. Spin filtering is observed in the forward bias regime and its sign is switched by using different photon energies. First principles calculations suggest that the spin polarization of the Fe layer is positive within the energy region into which spin polarized electrons tunnel. The authors attribute this sign switching to the initial and final states of the electrons tunneling across the interface, whose spin polarizations are determined by the selection rules in GaAs during photoexcitation and spin polarization of the Fe(001) layer, respectively. © 2007 American Institute of Physics.
spellingShingle Kurebayashi, H
Steinmuller, S
Laloe, J
Trypiniotis, T
Easton, S
Ionescu, A
Yates, JR
Bland, J
Initial/final state selection of the spin polarization in electron tunneling across an epitaxial Fe/GaAs(001) interface
title Initial/final state selection of the spin polarization in electron tunneling across an epitaxial Fe/GaAs(001) interface
title_full Initial/final state selection of the spin polarization in electron tunneling across an epitaxial Fe/GaAs(001) interface
title_fullStr Initial/final state selection of the spin polarization in electron tunneling across an epitaxial Fe/GaAs(001) interface
title_full_unstemmed Initial/final state selection of the spin polarization in electron tunneling across an epitaxial Fe/GaAs(001) interface
title_short Initial/final state selection of the spin polarization in electron tunneling across an epitaxial Fe/GaAs(001) interface
title_sort initial final state selection of the spin polarization in electron tunneling across an epitaxial fe gaas 001 interface
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