Coupled spin and electron-phonon interaction at the Tl/Si(111) surface from relativistic first-principles calculations

We investigate the role played by the electron spin and the spin-orbit interaction in the exceptional electron-phonon coupling at the Tl/Si(111) surface. Our first-principles calculations demonstrate that the particular spin pattern of this system dominates the whole low-energy electron-phonon physi...

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Autores: García Goiricelaya, Peio, García de Gurtubay Galligo, Idoia, Eiguren Goyenechea, Asier
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/65320
Acceso en línea:http://hdl.handle.net/10810/65320
Access Level:acceso abierto
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spelling Coupled spin and electron-phonon interaction at the Tl/Si(111) surface from relativistic first-principles calculationsGarcía Goiricelaya, PeioGarcía de Gurtubay Galligo, IdoiaEiguren Goyenechea, AsierWe investigate the role played by the electron spin and the spin-orbit interaction in the exceptional electron-phonon coupling at the Tl/Si(111) surface. Our first-principles calculations demonstrate that the particular spin pattern of this system dominates the whole low-energy electron-phonon physics, which is remarkably explained by forbidden spin-spin scattering channels. In particular, we show that the strength of the electron-phonon coupling appears drastically weakened for surface states close to the ¯¯¯¯K and ¯¯¯¯¯K′ valleys, which is unambiguously attributed to the spin polarization through the associated modulation due to the spinor overlaps. However, close to the ¯¯¯Γ point, the particular spin pattern in this area is less effective in damping the electron-phonon matrix elements, and the result is an exceptional strength of the electron-phonon coupling parameter λ∼1.4. These results are rationalized by a simple model for the electron-phonon matrix elements including the spinor terms.American Physical Society202420242018info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/65320reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoIngléshttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.97.201405info:eu-repo/semantics/openAccess© 2018 American Physical Societyoai:addi.ehu.eus:10810/653202026-06-18T09:23:17Z
dc.title.none.fl_str_mv Coupled spin and electron-phonon interaction at the Tl/Si(111) surface from relativistic first-principles calculations
title Coupled spin and electron-phonon interaction at the Tl/Si(111) surface from relativistic first-principles calculations
spellingShingle Coupled spin and electron-phonon interaction at the Tl/Si(111) surface from relativistic first-principles calculations
García Goiricelaya, Peio
title_short Coupled spin and electron-phonon interaction at the Tl/Si(111) surface from relativistic first-principles calculations
title_full Coupled spin and electron-phonon interaction at the Tl/Si(111) surface from relativistic first-principles calculations
title_fullStr Coupled spin and electron-phonon interaction at the Tl/Si(111) surface from relativistic first-principles calculations
title_full_unstemmed Coupled spin and electron-phonon interaction at the Tl/Si(111) surface from relativistic first-principles calculations
title_sort Coupled spin and electron-phonon interaction at the Tl/Si(111) surface from relativistic first-principles calculations
dc.creator.none.fl_str_mv García Goiricelaya, Peio
García de Gurtubay Galligo, Idoia
Eiguren Goyenechea, Asier
author García Goiricelaya, Peio
author_facet García Goiricelaya, Peio
García de Gurtubay Galligo, Idoia
Eiguren Goyenechea, Asier
author_role author
author2 García de Gurtubay Galligo, Idoia
Eiguren Goyenechea, Asier
author2_role author
author
description We investigate the role played by the electron spin and the spin-orbit interaction in the exceptional electron-phonon coupling at the Tl/Si(111) surface. Our first-principles calculations demonstrate that the particular spin pattern of this system dominates the whole low-energy electron-phonon physics, which is remarkably explained by forbidden spin-spin scattering channels. In particular, we show that the strength of the electron-phonon coupling appears drastically weakened for surface states close to the ¯¯¯¯K and ¯¯¯¯¯K′ valleys, which is unambiguously attributed to the spin polarization through the associated modulation due to the spinor overlaps. However, close to the ¯¯¯Γ point, the particular spin pattern in this area is less effective in damping the electron-phonon matrix elements, and the result is an exceptional strength of the electron-phonon coupling parameter λ∼1.4. These results are rationalized by a simple model for the electron-phonon matrix elements including the spinor terms.
publishDate 2018
dc.date.none.fl_str_mv 2018
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/65320
url http://hdl.handle.net/10810/65320
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://journals.aps.org/prb/abstract/10.1103/PhysRevB.97.201405
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
© 2018 American Physical Society
eu_rights_str_mv openAccess
rights_invalid_str_mv © 2018 American Physical Society
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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