Photoemission study of the electronic structure and charge density waves of Na(2)Ti(2)Sb(2)O

The electronic structure of Na(2)Ti(2)Sb(2)O single crystal is studied by photon energy and polarization dependent angle-resolved photoemission spectroscopy (ARPES). The obtained band structure and Fermi surface agree well with the band structure calculation of Na(2)Ti(2)Sb(2)O in the non-magnetic s...

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Autores principales: Tan, S. Y., Jiang, J., Ye, Z. R., Niu, X. H., Song, Y., Zhang, C. L., Dai, P. C., Xie, B. P., Lai, X. C., Feng, D. L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5386208/
https://www.ncbi.nlm.nih.gov/pubmed/25927621
http://dx.doi.org/10.1038/srep09515
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author Tan, S. Y.
Jiang, J.
Ye, Z. R.
Niu, X. H.
Song, Y.
Zhang, C. L.
Dai, P. C.
Xie, B. P.
Lai, X. C.
Feng, D. L.
author_facet Tan, S. Y.
Jiang, J.
Ye, Z. R.
Niu, X. H.
Song, Y.
Zhang, C. L.
Dai, P. C.
Xie, B. P.
Lai, X. C.
Feng, D. L.
author_sort Tan, S. Y.
collection PubMed
description The electronic structure of Na(2)Ti(2)Sb(2)O single crystal is studied by photon energy and polarization dependent angle-resolved photoemission spectroscopy (ARPES). The obtained band structure and Fermi surface agree well with the band structure calculation of Na(2)Ti(2)Sb(2)O in the non-magnetic state, which indicates that there is no magnetic order in Na(2)Ti(2)Sb(2)O and the electronic correlation is weak. Polarization dependent ARPES results suggest the multi-band and multi-orbital nature of Na(2)Ti(2)Sb(2)O. Photon energy dependent ARPES results suggest that the electronic structure of Na(2)Ti(2)Sb(2)O is rather two-dimensional. Moreover, we find a density wave energy gap forms below the transition temperature and reaches 65 meV at 7 K, indicating that Na(2)Ti(2)Sb(2)O is likely a weakly correlated CDW material in the strong electron-phonon interaction regime.
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spelling pubmed-53862082017-04-14 Photoemission study of the electronic structure and charge density waves of Na(2)Ti(2)Sb(2)O Tan, S. Y. Jiang, J. Ye, Z. R. Niu, X. H. Song, Y. Zhang, C. L. Dai, P. C. Xie, B. P. Lai, X. C. Feng, D. L. Sci Rep Article The electronic structure of Na(2)Ti(2)Sb(2)O single crystal is studied by photon energy and polarization dependent angle-resolved photoemission spectroscopy (ARPES). The obtained band structure and Fermi surface agree well with the band structure calculation of Na(2)Ti(2)Sb(2)O in the non-magnetic state, which indicates that there is no magnetic order in Na(2)Ti(2)Sb(2)O and the electronic correlation is weak. Polarization dependent ARPES results suggest the multi-band and multi-orbital nature of Na(2)Ti(2)Sb(2)O. Photon energy dependent ARPES results suggest that the electronic structure of Na(2)Ti(2)Sb(2)O is rather two-dimensional. Moreover, we find a density wave energy gap forms below the transition temperature and reaches 65 meV at 7 K, indicating that Na(2)Ti(2)Sb(2)O is likely a weakly correlated CDW material in the strong electron-phonon interaction regime. Nature Publishing Group 2015-03-30 /pmc/articles/PMC5386208/ /pubmed/25927621 http://dx.doi.org/10.1038/srep09515 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Tan, S. Y.
Jiang, J.
Ye, Z. R.
Niu, X. H.
Song, Y.
Zhang, C. L.
Dai, P. C.
Xie, B. P.
Lai, X. C.
Feng, D. L.
Photoemission study of the electronic structure and charge density waves of Na(2)Ti(2)Sb(2)O
title Photoemission study of the electronic structure and charge density waves of Na(2)Ti(2)Sb(2)O
title_full Photoemission study of the electronic structure and charge density waves of Na(2)Ti(2)Sb(2)O
title_fullStr Photoemission study of the electronic structure and charge density waves of Na(2)Ti(2)Sb(2)O
title_full_unstemmed Photoemission study of the electronic structure and charge density waves of Na(2)Ti(2)Sb(2)O
title_short Photoemission study of the electronic structure and charge density waves of Na(2)Ti(2)Sb(2)O
title_sort photoemission study of the electronic structure and charge density waves of na(2)ti(2)sb(2)o
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5386208/
https://www.ncbi.nlm.nih.gov/pubmed/25927621
http://dx.doi.org/10.1038/srep09515
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