Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2⁢Se3, Bi2⁢Te3, and Cu-Doped Bi2⁢Se3

Quasiparticle dynamics on the topological surface state of Bi2⁢Se3, Bi2⁢Te3, and superconducting Cu⁢Bi2⁢Se3 are studied by 7 eV laser-based angle resolved photoemission spectroscopy. We find strong mode couplings in the Dirac-cone surface states at energies of ∼3 and ∼15–20 meV associated with an e...

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Main Author:	Kondo, Takeshi (author)
Other Authors:	Nakashima, Y. (author), Ota, Y. (author), Ishida, Y. (author), Malaeb, W. (author), Okazaki, K. (author), Shin, S. (author), Kriener, M. (author), Sasaki, Satoshi (author), Segawa, Kouji (author), Ando, Yoichi (author)
Format:	article
Published:	2013
Online Access:	http://hdl.handle.net/10725/16653 https://doi.org/10.1103/PhysRevLett.110.217601 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.217601
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author	Kondo, Takeshi
author2	Nakashima, Y. Ota, Y. Ishida, Y. Malaeb, W. Okazaki, K. Shin, S. Kriener, M. Sasaki, Satoshi Segawa, Kouji Ando, Yoichi
author2_role	author author author author author author author author author author
author_facet	Kondo, Takeshi Nakashima, Y. Ota, Y. Ishida, Y. Malaeb, W. Okazaki, K. Shin, S. Kriener, M. Sasaki, Satoshi Segawa, Kouji Ando, Yoichi
author_role	author
dc.creator.none.fl_str_mv	Kondo, Takeshi Nakashima, Y. Ota, Y. Ishida, Y. Malaeb, W. Okazaki, K. Shin, S. Kriener, M. Sasaki, Satoshi Segawa, Kouji Ando, Yoichi
dc.date.none.fl_str_mv	2013 2013-05-23 2025-02-27T14:45:50Z 2025-02-27T14:45:50Z
dc.identifier.none.fl_str_mv	0031-9007 http://hdl.handle.net/10725/16653 https://doi.org/10.1103/PhysRevLett.110.217601 Kondo, T., Nakashima, Y., Ota, Y., Ishida, Y., Malaeb, W., Okazaki, K., ... & Ando, Y. (2013). Anomalous Dressing of Dirac Fermions in the Topological Surface State<? format?> of Bi 2 Se 3, Bi 2 Te 3, and Cu-Doped Bi 2 Se 3. Physical Review Letters, 110(21), 217601. http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.217601
dc.language.none.fl_str_mv	en
dc.relation.none.fl_str_mv	Physical Review Letters
dc.rights.*.fl_str_mv	info:eu-repo/semantics/openAccess
dc.title.none.fl_str_mv	Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2⁢Se3, Bi2⁢Te3, and Cu-Doped Bi2⁢Se3
dc.type.none.fl_str_mv	Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article
description	Quasiparticle dynamics on the topological surface state of Bi2⁢Se3, Bi2⁢Te3, and superconducting Cu⁢Bi2⁢Se3 are studied by 7 eV laser-based angle resolved photoemission spectroscopy. We find strong mode couplings in the Dirac-cone surface states at energies of ∼3 and ∼15–20 meV associated with an exceptionally large coupling constant of ∼3, which is one of the strongest ever reported for any material. This result is compatible with the recent observation of a strong Kohn anomaly in the surface phonon dispersion of Bi2⁢Se3, but it appears that the theoretically proposed “spin-plasmon” excitations realized in helical metals are also playing an important role. Intriguingly, the ∼3 meV mode coupling is found to be enhanced in the superconducting state of Cu⁢Bi2⁢Se3.
eu_rights_str_mv	openAccess
format	article
id	LAURepo_061eb08ab7202021fb8eecdfdeedebea
identifier_str_mv	0031-9007 Kondo, T., Nakashima, Y., Ota, Y., Ishida, Y., Malaeb, W., Okazaki, K., ... & Ando, Y. (2013). Anomalous Dressing of Dirac Fermions in the Topological Surface State<? format?> of Bi 2 Se 3, Bi 2 Te 3, and Cu-Doped Bi 2 Se 3. Physical Review Letters, 110(21), 217601.
language_invalid_str_mv	en
network_acronym_str	LAURepo
network_name_str	Lebanese American University repository
oai_identifier_str	oai:laur.lau.edu.lb:10725/16653
publishDate	2013
repository.mail.fl_str_mv
repository.name.fl_str_mv
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spelling	Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2⁢Se3, Bi2⁢Te3, and Cu-Doped Bi2⁢Se3Kondo, TakeshiNakashima, Y.Ota, Y.Ishida, Y.Malaeb, W.Okazaki, K.Shin, S.Kriener, M.Sasaki, SatoshiSegawa, KoujiAndo, YoichiQuasiparticle dynamics on the topological surface state of Bi2⁢Se3, Bi2⁢Te3, and superconducting Cu⁢Bi2⁢Se3 are studied by 7 eV laser-based angle resolved photoemission spectroscopy. We find strong mode couplings in the Dirac-cone surface states at energies of ∼3 and ∼15–20 meV associated with an exceptionally large coupling constant of ∼3, which is one of the strongest ever reported for any material. This result is compatible with the recent observation of a strong Kohn anomaly in the surface phonon dispersion of Bi2⁢Se3, but it appears that the theoretically proposed “spin-plasmon” excitations realized in helical metals are also playing an important role. Intriguingly, the ∼3 meV mode coupling is found to be enhanced in the superconducting state of Cu⁢Bi2⁢Se3.Published2025-02-27T14:45:50Z2025-02-27T14:45:50Z20132013-05-23Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article0031-9007http://hdl.handle.net/10725/16653https://doi.org/10.1103/PhysRevLett.110.217601Kondo, T., Nakashima, Y., Ota, Y., Ishida, Y., Malaeb, W., Okazaki, K., ... & Ando, Y. (2013). Anomalous Dressing of Dirac Fermions in the Topological Surface State<? format?> of Bi 2 Se 3, Bi 2 Te 3, and Cu-Doped Bi 2 Se 3. Physical Review Letters, 110(21), 217601.http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.phphttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.217601enPhysical Review Lettersinfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/166532025-02-27T14:45:50Z
spellingShingle	Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2⁢Se3, Bi2⁢Te3, and Cu-Doped Bi2⁢Se3 Kondo, Takeshi
status_str	publishedVersion
title	Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2⁢Se3, Bi2⁢Te3, and Cu-Doped Bi2⁢Se3
title_full	Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2⁢Se3, Bi2⁢Te3, and Cu-Doped Bi2⁢Se3
title_fullStr	Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2⁢Se3, Bi2⁢Te3, and Cu-Doped Bi2⁢Se3
title_full_unstemmed	Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2⁢Se3, Bi2⁢Te3, and Cu-Doped Bi2⁢Se3
title_short	Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2⁢Se3, Bi2⁢Te3, and Cu-Doped Bi2⁢Se3
title_sort	Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2⁢Se3, Bi2⁢Te3, and Cu-Doped Bi2⁢Se3
url	http://hdl.handle.net/10725/16653 https://doi.org/10.1103/PhysRevLett.110.217601 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.217601

Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2⁢Se3, Bi2⁢Te3, and Cu-Doped Bi2⁢Se3

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