Metal-insulator transition and superconductivity in boron-doped diamond

Detalhes bibliográficos
Autor(a) principal: Klein, T.
Data de Publicação: 2007
Outros Autores: Achatz, P., Kacmarcik, J., Marcenat, C., Gustafsson, F., Silva, Antonio Ferreira da, Cytermann, C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/14667
Resumo: p. 1-7
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spelling Klein, T.Achatz, P.Kacmarcik, J.Marcenat, C.Gustafsson, F.Silva, Antonio Ferreira daCytermann, C.2014-02-21T18:44:35Z2014-02-21T18:44:35Z20071098-0121http://repositorio.ufba.br/ri/handle/ri/14667v. 75, n. 16p. 1-7We report on a detailed analysis of the transport properties and superconducting critical temperatures of boron-doped diamond films grown along the {100} direction. The system presents a metal-insulator transition (MIT) for a boron concentration (nB) on the order of nc∼4.5×1020cm−3, in excellent agreement with numerical calculations. The temperature dependence of the conductivity and Hall effect can be well described by variable range hopping for nB<nc with a characteristic hopping temperature T0 strongly reduced due to the proximity of the MIT. All metallic samples (i.e., for nB>nc) present a superconducting transition at low temperature. The zero-temperature conductivity σ0 deduced from fits to the data above the critical temperature (Tc) using a classical quantum interference formula scales as σ0∝(nB/nc−1)ν with ν∼1. Large Tc values (⩾0.4K) have been obtained for boron concentration down to nB/nc∼1.1 and Tc surprisingly mimics a (nB/nc−1)1/2 law. Those high Tc values can be explained by a slow decrease of the electron-phonon coupling parameter λ and a corresponding drop of the Coulomb pseudopotential μ∗ as nB→nc.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-01-28T17:12:09Z No. of bitstreams: 1 10.1103-PhysRevB.75.165313.pdf: 222138 bytes, checksum: 9eef63014f1342a9f914ff0c26346604 (MD5)Approved for entry into archive by Alda Lima da Silva (sivalda@ufba.br) on 2014-02-21T18:44:35Z (GMT) No. of bitstreams: 1 10.1103-PhysRevB.75.165313.pdf: 222138 bytes, checksum: 9eef63014f1342a9f914ff0c26346604 (MD5)Made available in DSpace on 2014-02-21T18:44:35Z (GMT). No. of bitstreams: 1 10.1103-PhysRevB.75.165313.pdf: 222138 bytes, checksum: 9eef63014f1342a9f914ff0c26346604 (MD5) Previous issue date: 2007http://dx.doi.org/10.1103/PhysRevB.75.165313reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAMetal-insulator transition and superconductivity in boron-doped diamondPhysical Review Binfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleBrasilinfo:eu-repo/semantics/openAccessengORIGINAL10.1103-PhysRevB.75.165313.pdf10.1103-PhysRevB.75.165313.pdfapplication/pdf222138https://repositorio.ufba.br/bitstream/ri/14667/1/10.1103-PhysRevB.75.165313.pdf9eef63014f1342a9f914ff0c26346604MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14667/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXT10.1103-PhysRevB.75.165313.pdf.txt10.1103-PhysRevB.75.165313.pdf.txtExtracted texttext/plain34735https://repositorio.ufba.br/bitstream/ri/14667/3/10.1103-PhysRevB.75.165313.pdf.txta760ca3cc868111848b6399a5b3e0feaMD53ri/146672022-03-10 13:54:23.684oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-03-10T16:54:23Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Metal-insulator transition and superconductivity in boron-doped diamond
dc.title.alternative.pt_BR.fl_str_mv Physical Review B
title Metal-insulator transition and superconductivity in boron-doped diamond
spellingShingle Metal-insulator transition and superconductivity in boron-doped diamond
Klein, T.
title_short Metal-insulator transition and superconductivity in boron-doped diamond
title_full Metal-insulator transition and superconductivity in boron-doped diamond
title_fullStr Metal-insulator transition and superconductivity in boron-doped diamond
title_full_unstemmed Metal-insulator transition and superconductivity in boron-doped diamond
title_sort Metal-insulator transition and superconductivity in boron-doped diamond
author Klein, T.
author_facet Klein, T.
Achatz, P.
Kacmarcik, J.
Marcenat, C.
Gustafsson, F.
Silva, Antonio Ferreira da
Cytermann, C.
author_role author
author2 Achatz, P.
Kacmarcik, J.
Marcenat, C.
Gustafsson, F.
Silva, Antonio Ferreira da
Cytermann, C.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Klein, T.
Achatz, P.
Kacmarcik, J.
Marcenat, C.
Gustafsson, F.
Silva, Antonio Ferreira da
Cytermann, C.
description p. 1-7
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2014-02-21T18:44:35Z
dc.date.available.fl_str_mv 2014-02-21T18:44:35Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/14667
dc.identifier.issn.none.fl_str_mv 1098-0121
dc.identifier.number.pt_BR.fl_str_mv v. 75, n. 16
identifier_str_mv 1098-0121
v. 75, n. 16
url http://repositorio.ufba.br/ri/handle/ri/14667
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.country.fl_str_mv Brasil
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