@article{a22de5eef9b948189cfe06e53ebc1c8e,
title = "Signatures of Fermi Arcs in the Quasiparticle Interferences of the Weyl Semimetals TaAs and NbP",
abstract = "The recent discovery of the first Weyl semimetal in TaAs provides the first observation of a Weyl fermion in nature. Such a topological semimetal features a novel type of anomalous surface state, the Fermi arc, which connects a pair of Weyl nodes through the boundary of the crystal. Here, we present theoretical calculations of the quasiparticle interference (QPI) patterns that arise from the surface states including the topological Fermi arcs in the Weyl semimetals TaAs and NbP. Most importantly, we discover that the QPI exhibits termination points that are fingerprints of the Weyl nodes in the interference pattern. Our results, for the first time, propose a universal interference signature of the topological Fermi arcs in TaAs, which is fundamental for scanning tunneling microscope (STM) measurements on this prototypical Weyl semimetal compound. More generally, our work provides critical guideline and methodology for STM studies on new Weyl semimetals. Further, the scattering channels revealed by our QPIs are broadly relevant to surface transport and device applications based on Weyl semimetals.",
author = "Guoqing Chang and Xu, {Su Yang} and Hao Zheng and Lee, {Chi Cheng} and Huang, {Shin Ming} and Ilya Belopolski and Sanchez, {Daniel S.} and Guang Bian and Nasser Alidoust and Chang, {Tay Rong} and Hsu, {Chuang Han} and Jeng, {Horng Tay} and Arun Bansil and Hsin Lin and Hasan, {M. Zahid}",
note = "Funding Information: Work at Princeton University was supported by the National Science Foundation, Division of Materials Research, under the Grant No. NSF-DMR-1507585. Work at the National University of Singapore was supported by the National Research Foundation (NRF), Prime Ministers Office, Singapore, under its NRF fellowship (NRF Grant No. NRF-NRFF2013-03). 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 National Center for Theoretical Sciences, Taiwan, for technical support. Work at Northeastern University was supported by the U.S. DOE/BES Grant No. DE-FG02-07ER46352, and benefited from Northeastern Universitys Advanced Scientific Computation Center (ASCC) and the National Energy Research Scientific Computing Center under the DOE Grant No. DE-AC02-05CH11231. G.C., S.M.H., T.R.C, and H.Ls visits to Princeton University were partially funded by the Gordon and Betty Moore Foundations Emergent Phenomena in Quantum Systems Initiative under the Grant No. GBMF4547 (M.Z.H.). G.C., S-Y.X., and H.Z. contributed equally to this work. Funding Information: Work at Princeton University was supported by the National Science Foundation, Division of Materials Research, under the Grant No.?NSF-DMR-1507585. Work at the National University of Singapore was supported by the National Research Foundation (NRF), Prime Ministers Office, Singapore, under its NRF fellowship (NRF Grant No.?NRF-NRFF2013-03). 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 National Center for Theoretical Sciences, Taiwan, for technical support. Work at Northeastern University was supported by the U.S. DOE/BES Grant No.?DE-FG02-07ER46352, and benefited from Northeastern Universitys Advanced Scientific Computation Center (ASCC) and the National Energy Research Scientific Computing Center under the DOE Grant No.?DE-AC02-05CH11231. G.C., S.M.H., T.R.C, and H.Ls visits to Princeton University were partially funded by the Gordon and Betty Moore Foundations Emergent Phenomena in Quantum Systems Initiative under the Grant No.?GBMF4547 (M.Z.H.). G.C., S-Y.X., and H.Z. contributed equally to this work. Publisher Copyright: {\textcopyright} 2016 American Physical Society.",
year = "2016",
month = feb,
day = "10",
doi = "10.1103/PhysRevLett.116.066601",
language = "English (US)",
volume = "116",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "6",
}