Discovery of a new type of topological Weyl fermion semimetal state in MoxW1-xTe2
Abstract
Here, the recent discovery of a Weyl semimetal in TaAs offers the first Weyl fermion observed in nature and dramatically broadens the classification of topological phases. However, in TaAs it has proven challenging to study the rich transport phenomena arising from emergent Weyl fermions. The series MoxW1-xTe2 are inversion-breaking, layered, tunable semimetals already under study as a promising platform for new electronics and recently proposed to host Type II, or strongly Lorentz-violating, Weyl fermions. Here we report the discovery of a Weyl semimetal in MoxW1-xTe2 at x=25%. We use pump-probe angle-resolved photoemission spectroscopy (pump-probe ARPES) to directly observe a topological Fermi arc above the Fermi level, demonstrating a Weyl semimetal. The excellent agreement with calculation suggests that MoxW1-xTe2 is a Type II Weyl semimetal. We also find that certain Weyl points are at the Fermi level, making MoxW1-xTe2 a promising platform for transport and optics experiments on Weyl semimetals.
- Authors:
-
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- Princeton Univ., Princeton, NJ (United States)
- Univ. of Tokyo, Chiba (Japan)
- Nanjing Univ., Nanjing (China)
- Nanyang Technological Univ. (Singapore)
- National Univ. of Singapore (Singapore)
- National Tsing Hua Univ., Hsinchu (Taiwan)
- Univ. of Central Florida, Orlando, FL (United States)
- National Tsing Hua Univ., Hsinchu (Taiwan); Academia Sinica, Taipei (Taiwan)
- Nanyang Technological Univ. (Singapore); CINTRA CNRS/NTU/THALES (Singapore)
- Publication Date:
- Research Org.:
- Princeton Univ., NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1361396
- Grant/Contract Number:
- FG02-05ER46200
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 7; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 36 MATERIALS SCIENCE; electronic properties and materials; topological insulators
Citation Formats
Belopolski, Ilya, Sanchez, Daniel S., Ishida, Yukiaki, Pan, Xingchen, Yu, Peng, Xu, Su -Yang, Chang, Guoqing, Chang, Tay -Rong, Zheng, Hao, Alidoust, Nasser, Bian, Guang, Neupane, Madhab, Huang, Shin -Ming, Lee, Chi -Cheng, Song, You, Bu, Haijun, Wang, Guanghou, Li, Shisheng, Eda, Goki, Jeng, Horng -Tay, Kondo, Takeshi, Lin, Hsin, Liu, Zheng, Song, Fengqi, Shin, Shik, and Hasan, M. Zahid. Discovery of a new type of topological Weyl fermion semimetal state in MoxW1-xTe2. United States: N. p., 2016.
Web. doi:10.1038/ncomms13643.
Belopolski, Ilya, Sanchez, Daniel S., Ishida, Yukiaki, Pan, Xingchen, Yu, Peng, Xu, Su -Yang, Chang, Guoqing, Chang, Tay -Rong, Zheng, Hao, Alidoust, Nasser, Bian, Guang, Neupane, Madhab, Huang, Shin -Ming, Lee, Chi -Cheng, Song, You, Bu, Haijun, Wang, Guanghou, Li, Shisheng, Eda, Goki, Jeng, Horng -Tay, Kondo, Takeshi, Lin, Hsin, Liu, Zheng, Song, Fengqi, Shin, Shik, & Hasan, M. Zahid. Discovery of a new type of topological Weyl fermion semimetal state in MoxW1-xTe2. United States. https://doi.org/10.1038/ncomms13643
Belopolski, Ilya, Sanchez, Daniel S., Ishida, Yukiaki, Pan, Xingchen, Yu, Peng, Xu, Su -Yang, Chang, Guoqing, Chang, Tay -Rong, Zheng, Hao, Alidoust, Nasser, Bian, Guang, Neupane, Madhab, Huang, Shin -Ming, Lee, Chi -Cheng, Song, You, Bu, Haijun, Wang, Guanghou, Li, Shisheng, Eda, Goki, Jeng, Horng -Tay, Kondo, Takeshi, Lin, Hsin, Liu, Zheng, Song, Fengqi, Shin, Shik, and Hasan, M. Zahid. Mon .
"Discovery of a new type of topological Weyl fermion semimetal state in MoxW1-xTe2". United States. https://doi.org/10.1038/ncomms13643. https://www.osti.gov/servlets/purl/1361396.
@article{osti_1361396,
title = {Discovery of a new type of topological Weyl fermion semimetal state in MoxW1-xTe2},
author = {Belopolski, Ilya and Sanchez, Daniel S. and Ishida, Yukiaki and Pan, Xingchen and Yu, Peng and Xu, Su -Yang and Chang, Guoqing and Chang, Tay -Rong and Zheng, Hao and Alidoust, Nasser and Bian, Guang and Neupane, Madhab and Huang, Shin -Ming and Lee, Chi -Cheng and Song, You and Bu, Haijun and Wang, Guanghou and Li, Shisheng and Eda, Goki and Jeng, Horng -Tay and Kondo, Takeshi and Lin, Hsin and Liu, Zheng and Song, Fengqi and Shin, Shik and Hasan, M. Zahid},
abstractNote = {Here, the recent discovery of a Weyl semimetal in TaAs offers the first Weyl fermion observed in nature and dramatically broadens the classification of topological phases. However, in TaAs it has proven challenging to study the rich transport phenomena arising from emergent Weyl fermions. The series MoxW1-xTe2 are inversion-breaking, layered, tunable semimetals already under study as a promising platform for new electronics and recently proposed to host Type II, or strongly Lorentz-violating, Weyl fermions. Here we report the discovery of a Weyl semimetal in MoxW1-xTe2 at x=25%. We use pump-probe angle-resolved photoemission spectroscopy (pump-probe ARPES) to directly observe a topological Fermi arc above the Fermi level, demonstrating a Weyl semimetal. The excellent agreement with calculation suggests that MoxW1-xTe2 is a Type II Weyl semimetal. We also find that certain Weyl points are at the Fermi level, making MoxW1-xTe2 a promising platform for transport and optics experiments on Weyl semimetals.},
doi = {10.1038/ncomms13643},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {Mon Dec 05 00:00:00 EST 2016},
month = {Mon Dec 05 00:00:00 EST 2016}
}
Web of Science
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- Crepaldi, A.; Autès, G.; Gatti, Gianmarco
- Deutsches Elektronen-Synchrotron, DESY, Hamburg
Unconventional scaling of the superfluid density with the critical temperature in transition metal dichalcogenides
text, January 2019
- Von Rohr, F. O.; Orain, J-C; Khasanov, R.
- American Association for the Advancement of Science
Nodeless superconductivity and its evolution with pressure in the layered dirac semimetal $2M-WS_2$
text, January 2019
- Guguchia, Zurab; Gawryluk, Dariusz J.; Brzezinska, Marta
- Nature Publishing Group
Field-effect transistor based on surface negative refraction in Weyl nanowire
text, January 2020
- Chen, Guangze; Chen, Wei; Zilberberg, Oded
- ETH Zurich
Chiral magnetoresistance in the Weyl semimetal NbP
preprint, January 2016
- Niemann, Anna Corinna; Gooth, Johannes; Wu, Shu-Chun
- arXiv
The Berry curvature dipole in Weyl semimetal materials: an ab initio study
text, January 2017
- Zhang, Yang; Sun, Yan; Yan, Binghai
- arXiv
Raman Signatures of Broken Inversion Symmetry and In-plane Anisotropy in Type-II Weyl Semimetal Candidate TaIrTe4
text, January 2018
- Liu, Yinan; Gu, Qiangqiang; Peng, Yu
- arXiv
Quasiparticle interference on type-I and type-II Weyl semimetal surfaces: a review
text, January 2018
- Zheng, Hao; Hasan, M. Zahid
- arXiv
Chiral Optical Response of Multifold Fermions
text, January 2018
- Flicker, Felix; de Juan, Fernando; Bradlyn, Barry
- arXiv
Tunable double-Weyl Fermion semimetal state in the SrSi$_2$ materials class
text, January 2018
- Singh, Bahadur; Chang, Guoqing; Chang, Tay-Rong
- arXiv
Nodal points of Weyl semimetals survive the presence of moderate disorder
text, January 2018
- Buchhold, Michael; Diehl, Sebastian; Altland, Alexander
- arXiv
Spin- and angle-resolved photoemission on topological materials
text, January 2018
- Dil, J. Hugo
- arXiv
Experimental Progress on Layered Topological Semimetals
text, January 2019
- Ma, Junchao; Deng, Ke; Zheng, Lu
- arXiv
Nodeless Superconductivity and its Evolution with Pressure in the Layered Dirac Semimetal 2M-WS_2
text, January 2019
- Guguchia, Z.; Gawryluk, D.; Brzezinska, M.
- arXiv
NbSeTe -A New Layered Transition Metal Dichalcogenide Superconductor
text, January 2019
- Yan, Dong; Wang, Shu; Lin, Yishi
- arXiv
Disorder and magnetoconductivity in tilted Weyl semimetals
text, January 2020
- Wang, Yi-Xiang; Li, Fuxiang
- arXiv
Angle-resolved photoemission spectroscopy and its application to topological materials
text, January 2021
- Lv, Baiqing; Qian, Tian; Ding, Hong
- arXiv
The induced by an electromagnetic field coexistence of types I and II spectra in Weyl semimetals
journal, September 2018
- Alisultanov, Zaur Z.
- Scientific Reports, Vol. 8, Issue 1