@article{858532f791b24970afb46bf2f7a0b565,
title = "Mirror Protected Dirac Fermions on a Weyl Semimetal NbP Surface",
abstract = "The first Weyl semimetal was recently discovered in the NbP class of compounds. Although the topology of these novel materials has been identified, the surface properties are not yet fully understood. By means of scanning tunneling spectroscopy, we find that NbP's (001) surface hosts a pair of Dirac cones protected by mirror symmetry. Through our high-resolution spectroscopic measurements, we resolve the quantum interference patterns arising from these novel Dirac fermions and reveal their electronic structure, including the linear dispersions. Our data, in agreement with our theoretical calculations, uncover further interesting features of the Weyl semimetal NbP's already exotic surface. Moreover, we discuss the similarities and distinctions between the Dirac fermions here and those in topological crystalline insulators in terms of symmetry protection and topology.",
author = "Hao Zheng and Guoqing Chang and Huang, {Shin Ming} and Cheng Guo and Xiao Zhang and Songtian Zhang and Jiaxin Yin and Xu, {Su Yang} and Ilya Belopolski and Nasser Alidoust and Sanchez, {Daniel S.} and Guang Bian and Chang, {Tay Rong} and Titus Neupert and Jeng, {Horng Tay} and Shuang Jia and Hsin Lin and Hasan, {M. Zahid}",
note = "Funding Information: The STM measurements at Princeton University were supported by the Gordon and Betty Moore Foundations EPiQS Initiative through Grant No. GBMF4547 (Hasan). H. Z also acknowledges the support from National Natural Science Foundation of China (Grant No. 11674226). Theoretical calculations at National University of Singapore were supported by the National Research Foundation, Prime Minister{\textquoteright}s Office, Singapore, under its NRF fellowship (NRF Grant No. NRF-NRFF2013-03). NbP crystal growth was supported by National Basic Research Program of China (Grants No. 2013CB921901 and No. 2014CB239302) T.-R. C. and H.-T. J. are supported by National Science Council, Academia Sinica, and National Tsing Hua University, Taiwan, and they also thank NCHC, CINC-NTU, and NCTS, Taiwan, for technical support. Publisher Copyright: {\textcopyright} 2017 American Physical Society.",
year = "2017",
month = nov,
day = "8",
doi = "10.1103/PhysRevLett.119.196403",
language = "English (US)",
volume = "119",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "19",
}