Coexistence of topological nontrivial phase and Rashba-type surface state in HoSb
ORAL
Abstract
Using the high resolution angle-resolved photoemission spectroscopy (ARPES), magnetotransport, and parallel first-principles modeling, we report the discovery of a topologically nontrivial state coexisting with a Rashba-type surface state in a rare earth monopnictide semimetal. Our theoretical analysis reveals the presence of bulk band inversions at the Γ and X points of the Brillouin zone (BZ). Interestingly, the upper part of the observed Rashba-type surface state coincides with the nontrivial surface state at the X point. Magnetotransport study indicates that HoSb can be characterized as a correlated nearly-complete electron-hole-compensated semimetal. Therefore, our findings provide HoSb as a new materials platform for exploring the interplay between coexisting topological and Rashba-type surface state and the non-saturating XMR effect in the rare earth monopnictide family.
*This project is supported by the Air Force Office of Scientific Research under Award No. FA9550-17-1-0415 and the Center for Thermal Energy Transport under Irradiation, an Energy Frontier Research Center funded by the U.S. DOE, Office of Basic Energy Sciences.
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Presenters
Md Mofazzel Hosen
Univ of Central Florida
University of Central Florida
Authors
Md Mofazzel Hosen
Univ of Central Florida
University of Central Florida
Gyanendra Dhakal
Univ of Central Florida
Physics, University of Central Florida
University of Central Florida
Baokai Wang
Northeastern University
Physics, Northeastern University
Narayan Poudel
Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA
Texas Center for Superconductivity, University of Houston
Idaho National Laboratory
Bahadur Singh
Northeastern University
Physics, Northeastern University
SZU-NUS Collaborative Center, ShenZhen University
Department of Physics, Northeastern University
Klauss Dimitri
Univ of Central Florida
Physics, University of Central Florida
University of Central Florida
Firoza Kabir
Univ of Central Florida
Physics, University of Central Florida
University of Central Florida
Christopher Sims
Univ of Central Florida
Physics, University of Central Florida
University of Central Florida
Sabin Regmi
Univ of Central Florida
Physics, University of Central Florida
University of Central Florida
William Neff
Univ of Central Florida
University of Central Florida
Daniel Murray
Idaho National Laboratory
Franziska Weickert
Los Alamos National Laboratory
National High Magnetic Field Laboratory
Krzysztof Gofryk
Idaho national lab
Idaho National Laboratory
Orest Pavlosiuk
Polish Academy of Sciences
Piotr Wisniewski
Polish Academy of Sciences
Dariusz Kaczorowski
Institute of Low Temperature and Structure Research, Polish Academy of Sciences
