@article{ee4e9f98d0534216b71f81d0789f3f16,
title = "Observation of Dirac-like semi-metallic phase in NdSb",
abstract = "The search of new topological phases of matter is one of the new directions in condensed matter physics. Recent experimental realizations of Dirac semimetal phases pave the way to look for other exotic phases of matter in real materials. Here we present a systematic angleresolved photoemission spectroscopy (ARPES) study of NdSb, a potential candidate for hosting a Dirac semi-metal phase. Our studies reveal two hole-like Fermi surface pockets present at the zone center (Γ) point as well as two elliptical electron-pockets present in the zone corner (X) point of the Brillouin zone (BZ). Interestingly, Dirac-like linearly dispersive states are observed about the zone corner (X) point in NdSb. Our first-principles calculations agree with the experimentally observed bands at the Γ point. Moreover, the Dirac-like state observed in NdSb may be a novel correlated state, not yet predicted in calculations. Our study opens a new direction to look for Dirac semi-metal states in other members of the rare earth monopnictide family.",
keywords = "ARPES, Dirac, NdSb, rare earth monopnictide, semi-metal, topological",
author = "Madhab Neupane and {Mofazzel Hosen}, M. and Ilya Belopolski and Nicholas Wakeham and Klauss Dimitri and Nagendra Dhakal and Zhu, {Jian Xin} and {Zahid Hasan}, M. and Bauer, {Eric D.} and Filip Ronning",
note = "Funding Information: MN is supported by the start-up fund from University of Central Florida (UCF). IB acknowledges the support of the NSF GRFP. Work at Princeton University is supported by the Emergent Phenomena in Quantum Systems Initiative of the Gordon and Betty Moore Foundation under Grant No. GBMF4547 (M. Z. H.) and by the National Science Foundation, Division of Materials Research, under Grants No. NSF-DMR-1507585 and No. NSF-DMR-1006492. Synthesis and transport measurements of the crystals were performed at Los Alamos National Laboratory under the auspices of the U.S. Department of Energy, Office of Science. Electronic structure calculations were performed with the support of the Los Alamos National Laboratory LDRD program. We thank Plumb Nicholas Clark for beamline assistance at the SLS, PSI. We also thank Sung-Kwan Mo for beamline assistance at the LBNL. MN acknowledges fruitful discussions with TDurakiewicz and A V Balatsky at LANL, and Talat Rahman at UCF. Publisher Copyright: {\textcopyright} 2016 IOP Publishing Ltd.",
year = "2016",
month = may,
day = "9",
doi = "10.1088/0953-8984/28/23/23LT02",
language = "English (US)",
volume = "28",
journal = "Journal of Physics Condensed Matter",
issn = "0953-8984",
publisher = "IOP Publishing Ltd.",
number = "23",
}