Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation

Autores
Osmic, E.; Barzola Quiquia, Jose Luis; Böhlmann, W.; Bercoff, Paula Gabriela; Venosta, Lisandro Francisco; Häussler, P.
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We have measured the temperature dependence of resistance R(T), thermopower S(T), magnetoresistance (MR) and the Hall effect (HE) of Bi80Sb20, Bi85Sb15 and Bi90Sb10 topological insulator thin films. Samples were prepared by sequential flash-evaporation at room temperature and annealing at T = 350 K. The R(T) of the three investigated samples show metallic-like behavior at temperatures less than T = 75 K, while at higher temperatures, R(T) curves show a semiconducting-like behavior. The thermopower S(T) of the three investigated samples is negative in the entire temperature range measured in this work, with a linear behavior from 5 K up to ≈100 K. The magnetoresistance of all samples is positive with a small temperature dependence. The highest MR(B = 7 T) was observed in Bi85Sb15 with a ≈600% and ≈125% change at 5 K and 300 K, respectively. Clear evidence of weak antilocalization contribution to the MR was observed only in sample Bi85Sb15 at temperatures T < 75 K. Quantum oscillations in the MR originating from the Fermi surface, which has a clear two-dimensional character, were observed in sample Bi85Sb15 up to ≈21 K. Carrier mobility information of sample Bi85Sb15 was extracted from low field HE data, showing a remarkably high value of μ ≈ 2.8 × 104 cm2/Vs at 5 K, with a small decrease for increasing temperature.
Fil: Osmic, E.. Universitat Leipzig. Felix Bloch Institut Fur Festkorperphysik.; Alemania
Fil: Barzola Quiquia, Jose Luis. Universitat Leipzig. Felix Bloch Institut Fur Festkorperphysik.; Alemania
Fil: Böhlmann, W.. Universitat Leipzig. Felix Bloch Institut Fur Festkorperphysik.; Alemania
Fil: Bercoff, Paula Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Venosta, Lisandro Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Häussler, P.. Chemnitz University Of Technology; Alemania
Materia
THERMOPOWER
MAGNETORRESISTANCE
TOPOLOGICAL INSULATOR
BiSb ALLOYS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/201726
Acceder
id CONICETDig_98ef29b60197167dc5966420d871179e
oai_identifier_str oai:ri.conicet.gov.ar:11336/201726
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporationOsmic, E.Barzola Quiquia, Jose LuisBöhlmann, W.Bercoff, Paula GabrielaVenosta, Lisandro FranciscoHäussler, P.THERMOPOWERMAGNETORRESISTANCETOPOLOGICAL INSULATORBiSb ALLOYShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We have measured the temperature dependence of resistance R(T), thermopower S(T), magnetoresistance (MR) and the Hall effect (HE) of Bi80Sb20, Bi85Sb15 and Bi90Sb10 topological insulator thin films. Samples were prepared by sequential flash-evaporation at room temperature and annealing at T = 350 K. The R(T) of the three investigated samples show metallic-like behavior at temperatures less than T = 75 K, while at higher temperatures, R(T) curves show a semiconducting-like behavior. The thermopower S(T) of the three investigated samples is negative in the entire temperature range measured in this work, with a linear behavior from 5 K up to ≈100 K. The magnetoresistance of all samples is positive with a small temperature dependence. The highest MR(B = 7 T) was observed in Bi85Sb15 with a ≈600% and ≈125% change at 5 K and 300 K, respectively. Clear evidence of weak antilocalization contribution to the MR was observed only in sample Bi85Sb15 at temperatures T < 75 K. Quantum oscillations in the MR originating from the Fermi surface, which has a clear two-dimensional character, were observed in sample Bi85Sb15 up to ≈21 K. Carrier mobility information of sample Bi85Sb15 was extracted from low field HE data, showing a remarkably high value of μ ≈ 2.8 × 104 cm2/Vs at 5 K, with a small decrease for increasing temperature.Fil: Osmic, E.. Universitat Leipzig. Felix Bloch Institut Fur Festkorperphysik.; AlemaniaFil: Barzola Quiquia, Jose Luis. Universitat Leipzig. Felix Bloch Institut Fur Festkorperphysik.; AlemaniaFil: Böhlmann, W.. Universitat Leipzig. Felix Bloch Institut Fur Festkorperphysik.; AlemaniaFil: Bercoff, Paula Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Venosta, Lisandro Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Häussler, P.. Chemnitz University Of Technology; AlemaniaPergamon-Elsevier Science Ltd2022-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/201726Osmic, E.; Barzola Quiquia, Jose Luis; Böhlmann, W.; Bercoff, Paula Gabriela; Venosta, Lisandro Francisco; et al.; Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation; Pergamon-Elsevier Science Ltd; Journal of Physics and Chemistry of Solids; 167; 8-2022; 1-120022-36971879-2553CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0022369722001627info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jpcs.2022.110734info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:14:03Zoai:ri.conicet.gov.ar:11336/201726instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:14:04.084CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation
title Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation
spellingShingle Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation
Osmic, E.
THERMOPOWER
MAGNETORRESISTANCE
TOPOLOGICAL INSULATOR
BiSb ALLOYS
title_short Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation
title_full Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation
title_fullStr Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation
title_full_unstemmed Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation
title_sort Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation
dc.creator.none.fl_str_mv Osmic, E.
Barzola Quiquia, Jose Luis
Böhlmann, W.
Bercoff, Paula Gabriela
Venosta, Lisandro Francisco
Häussler, P.
author Osmic, E.
author_facet Osmic, E.
Barzola Quiquia, Jose Luis
Böhlmann, W.
Bercoff, Paula Gabriela
Venosta, Lisandro Francisco
Häussler, P.
author_role author
author2 Barzola Quiquia, Jose Luis
Böhlmann, W.
Bercoff, Paula Gabriela
Venosta, Lisandro Francisco
Häussler, P.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv THERMOPOWER
MAGNETORRESISTANCE
TOPOLOGICAL INSULATOR
BiSb ALLOYS
topic THERMOPOWER
MAGNETORRESISTANCE
TOPOLOGICAL INSULATOR
BiSb ALLOYS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We have measured the temperature dependence of resistance R(T), thermopower S(T), magnetoresistance (MR) and the Hall effect (HE) of Bi80Sb20, Bi85Sb15 and Bi90Sb10 topological insulator thin films. Samples were prepared by sequential flash-evaporation at room temperature and annealing at T = 350 K. The R(T) of the three investigated samples show metallic-like behavior at temperatures less than T = 75 K, while at higher temperatures, R(T) curves show a semiconducting-like behavior. The thermopower S(T) of the three investigated samples is negative in the entire temperature range measured in this work, with a linear behavior from 5 K up to ≈100 K. The magnetoresistance of all samples is positive with a small temperature dependence. The highest MR(B = 7 T) was observed in Bi85Sb15 with a ≈600% and ≈125% change at 5 K and 300 K, respectively. Clear evidence of weak antilocalization contribution to the MR was observed only in sample Bi85Sb15 at temperatures T < 75 K. Quantum oscillations in the MR originating from the Fermi surface, which has a clear two-dimensional character, were observed in sample Bi85Sb15 up to ≈21 K. Carrier mobility information of sample Bi85Sb15 was extracted from low field HE data, showing a remarkably high value of μ ≈ 2.8 × 104 cm2/Vs at 5 K, with a small decrease for increasing temperature.
Fil: Osmic, E.. Universitat Leipzig. Felix Bloch Institut Fur Festkorperphysik.; Alemania
Fil: Barzola Quiquia, Jose Luis. Universitat Leipzig. Felix Bloch Institut Fur Festkorperphysik.; Alemania
Fil: Böhlmann, W.. Universitat Leipzig. Felix Bloch Institut Fur Festkorperphysik.; Alemania
Fil: Bercoff, Paula Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Venosta, Lisandro Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Häussler, P.. Chemnitz University Of Technology; Alemania
description We have measured the temperature dependence of resistance R(T), thermopower S(T), magnetoresistance (MR) and the Hall effect (HE) of Bi80Sb20, Bi85Sb15 and Bi90Sb10 topological insulator thin films. Samples were prepared by sequential flash-evaporation at room temperature and annealing at T = 350 K. The R(T) of the three investigated samples show metallic-like behavior at temperatures less than T = 75 K, while at higher temperatures, R(T) curves show a semiconducting-like behavior. The thermopower S(T) of the three investigated samples is negative in the entire temperature range measured in this work, with a linear behavior from 5 K up to ≈100 K. The magnetoresistance of all samples is positive with a small temperature dependence. The highest MR(B = 7 T) was observed in Bi85Sb15 with a ≈600% and ≈125% change at 5 K and 300 K, respectively. Clear evidence of weak antilocalization contribution to the MR was observed only in sample Bi85Sb15 at temperatures T < 75 K. Quantum oscillations in the MR originating from the Fermi surface, which has a clear two-dimensional character, were observed in sample Bi85Sb15 up to ≈21 K. Carrier mobility information of sample Bi85Sb15 was extracted from low field HE data, showing a remarkably high value of μ ≈ 2.8 × 104 cm2/Vs at 5 K, with a small decrease for increasing temperature.
publishDate 2022
dc.date.none.fl_str_mv 2022-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/201726
Osmic, E.; Barzola Quiquia, Jose Luis; Böhlmann, W.; Bercoff, Paula Gabriela; Venosta, Lisandro Francisco; et al.; Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation; Pergamon-Elsevier Science Ltd; Journal of Physics and Chemistry of Solids; 167; 8-2022; 1-12
0022-3697
1879-2553
CONICET Digital
CONICET
url http://hdl.handle.net/11336/201726
identifier_str_mv Osmic, E.; Barzola Quiquia, Jose Luis; Böhlmann, W.; Bercoff, Paula Gabriela; Venosta, Lisandro Francisco; et al.; Thermopower and magnetotransport properties of Bi100−xSbx topological insulator thin films prepared by flash evaporation; Pergamon-Elsevier Science Ltd; Journal of Physics and Chemistry of Solids; 167; 8-2022; 1-12
0022-3697
1879-2553
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0022369722001627
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jpcs.2022.110734
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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