Dirac and Weyl Semimetal in XYBi (X = Ba, Eu; Y = Cu, Ag and Au)

Weyl and Dirac semimetals recently stimulate intense research activities due to their novel properties. Combining first-principles calculations and effective model analysis, we predict that nonmagnetic compounds BaYBi (Y = Au, Ag and Cu) are Dirac semimetals. As for the magnetic compound EuYBi, alth...

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Autores principales: Du, Yongping, Wan, Bo, Wang, Di, Sheng, Li, Duan, Chun-Gang, Wan, Xiangang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4585842/
https://www.ncbi.nlm.nih.gov/pubmed/26399742
http://dx.doi.org/10.1038/srep14423
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author Du, Yongping
Wan, Bo
Wang, Di
Sheng, Li
Duan, Chun-Gang
Wan, Xiangang
author_facet Du, Yongping
Wan, Bo
Wang, Di
Sheng, Li
Duan, Chun-Gang
Wan, Xiangang
author_sort Du, Yongping
collection PubMed
description Weyl and Dirac semimetals recently stimulate intense research activities due to their novel properties. Combining first-principles calculations and effective model analysis, we predict that nonmagnetic compounds BaYBi (Y = Au, Ag and Cu) are Dirac semimetals. As for the magnetic compound EuYBi, although the time reversal symmetry is broken, their long-range magnetic ordering cannot split the Dirac point into pairs of Weyl points. However, we propose that partially substitute Eu ions by Ba ions will realize the Weyl semimetal.
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spelling pubmed-45858422015-09-29 Dirac and Weyl Semimetal in XYBi (X = Ba, Eu; Y = Cu, Ag and Au) Du, Yongping Wan, Bo Wang, Di Sheng, Li Duan, Chun-Gang Wan, Xiangang Sci Rep Article Weyl and Dirac semimetals recently stimulate intense research activities due to their novel properties. Combining first-principles calculations and effective model analysis, we predict that nonmagnetic compounds BaYBi (Y = Au, Ag and Cu) are Dirac semimetals. As for the magnetic compound EuYBi, although the time reversal symmetry is broken, their long-range magnetic ordering cannot split the Dirac point into pairs of Weyl points. However, we propose that partially substitute Eu ions by Ba ions will realize the Weyl semimetal. Nature Publishing Group 2015-09-24 /pmc/articles/PMC4585842/ /pubmed/26399742 http://dx.doi.org/10.1038/srep14423 Text en Copyright © 2015, Macmillan Publishers Limited 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 to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Du, Yongping
Wan, Bo
Wang, Di
Sheng, Li
Duan, Chun-Gang
Wan, Xiangang
Dirac and Weyl Semimetal in XYBi (X = Ba, Eu; Y = Cu, Ag and Au)
title Dirac and Weyl Semimetal in XYBi (X = Ba, Eu; Y = Cu, Ag and Au)
title_full Dirac and Weyl Semimetal in XYBi (X = Ba, Eu; Y = Cu, Ag and Au)
title_fullStr Dirac and Weyl Semimetal in XYBi (X = Ba, Eu; Y = Cu, Ag and Au)
title_full_unstemmed Dirac and Weyl Semimetal in XYBi (X = Ba, Eu; Y = Cu, Ag and Au)
title_short Dirac and Weyl Semimetal in XYBi (X = Ba, Eu; Y = Cu, Ag and Au)
title_sort dirac and weyl semimetal in xybi (x = ba, eu; y = cu, ag and au)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4585842/
https://www.ncbi.nlm.nih.gov/pubmed/26399742
http://dx.doi.org/10.1038/srep14423
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