@article{11130d8b0149490ca1e33d3de1e81adc,
title = "Fermi arc electronic structure and Chern numbers in the type-II Weyl semimetal candidate Mox W1-xTe2",
abstract = "It has recently been proposed that electronic band structures in crystals can give rise to a previously overlooked type of Weyl fermion, which violates Lorentz invariance and, consequently, is forbidden in particle physics. It was further predicted that MoxW1-xTe2 may realize such a type-II Weyl fermion. Here, we first show theoretically that it is crucial to access the band structure above the Fermi level F to show a Weyl semimetal in MoxW1-xTe2. Then, we study MoxW1-xTe2 by pump-probe ARPES and we directly access the band structure >0.2 eV above F in experiment. By comparing our results with ab initio calculations, we conclude that we directly observe the surface state containing the topological Fermi arc. We propose that a future study of MoxW1-xTe2 by pump-probe ARPES may directly pinpoint the Fermi arc. Our work sets the stage for the experimental discovery of the first type-II Weyl semimetal in MoxW1-xTe2.",
author = "Ilya Belopolski and Xu, {Su Yang} and Yukiaki Ishida and Xingchen Pan and Peng Yu and Sanchez, {Daniel S.} and Hao Zheng and Madhab Neupane and Nasser Alidoust and Guoqing Chang and Chang, {Tay Rong} and Yun Wu and Guang Bian and Huang, {Shin Ming} and Lee, {Chi Cheng} and Daixiang Mou and Lunan Huang and You Song and Baigeng Wang and Guanghou Wang and Yeh, {Yao Wen} and Nan Yao and Rault, {Julien E.} and {Le F{\`e}vre}, Patrick and Fran{\c c}ois Bertran and Jeng, {Horng Tay} and Takeshi Kondo and Adam Kaminski and Hsin Lin and Zheng Liu and Fengqi Song and Shik Shin and Hasan, {M. Zahid}",
note = "Funding Information: Work at Princeton and Princeton-led ARPES measurements were supported by the U.S. DOE/BES under DE-FG-02-05ER46200. I.B. and D.S. thank Moritz Hoesch and Timur Kim for support during synchrotron ARPES measurements at Beamline I05 of Diamond Lightsource in Didcot, UK. I.B. acknowledges the support of the US National Science Foundation GRFP. Y.I. is supported by the Japan Society for the Promotion of Science, KAKENHI 26800165. The ARPES measurements at Ames Lab were supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering Division. Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358. M.N. is supported by start-up funds from the University of Central Florida. X.C.P., Y.S., B.G.W., G.H.W., and F.Q.S. thank the National Key Projects for Basic Research of China (Grant Nos. 2013CB922100 and 2011CB922103), the National Natural Science Foundation of China (Grant Nos. 91421109, 11522432, and 21571097) and the NSF of Jiangsu province (No. BK20130054). This work is also financially supported by the Singapore National Research Foundation (NRF) under NRF RF Award No. NRF-RF2013-08, the start-up funding from Nanyang Technological University (M4081137.070). T.-R.C. and H.-T.J. were supported by the National Science Council, Taiwan. H.-T.J. also thanks the National Center for High-Performance Computing, Computer and Information Network Center National Taiwan University, and the National Center for Theoretical Sciences, Taiwan, for technical support. H.L. acknowledges the Singapore NRF under Award No. NRF-NRFF2013-03. Publisher Copyright: {\textcopyright} 2016 American Physical Society.",
year = "2016",
month = aug,
day = "15",
doi = "10.1103/PhysRevB.94.085127",
language = "English",
volume = "94",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "8",
}