skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Asymmetric mass acquisition in LaBi. Topological semimetal candidate

Journal Article · · Physical Review B
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Ames Lab., Ames, IA (United States). Division of Materials Science and Engineering; Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
  2. Ames Lab., Ames, IA (United States). Division of Materials Science and Engineering

We use our high resolution He-lamp-based, tunable laser-based angle-resolved photoemission spectroscopy measurements and density functional theory calculations to study the electronic properties of LaBi, a binary system that was proposed to be a member of a new family of topological semimetals. Both bulk and surface bands are present in the spectra. Furthermore, the dispersion of the surface state is highly unusual. It resembles a Dirac cone, but upon closer inspection we can clearly detect an energy gap. The bottom band follows roughly a parabolic dispersion. The dispersion of the top band remains very linear, “V” -shape like, with the tip approaching very closely to the extrapolated location of Dirac point. Finally, such asymmetric mass acquisition is highly unusual and opens a possibility of a new topological phenomenon that has yet to be understood.

Research Organization:
Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
AC02-07CH11358; DMR-1420451
OSTI ID:
1326850
Alternate ID(s):
OSTI ID: 1298340
Report Number(s):
IS-J-9084; PRBMDO
Journal Information:
Physical Review B, Vol. 94, Issue 8; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 41 works
Citation information provided by
Web of Science

References (46)

Massive Dirac Fermion on the Surface of a Magnetically Doped Topological Insulator journal August 2010
Generalized Gradient Approximation Made Simple journal October 1996
New Method for High-Accuracy Determination of the Fine-Structure Constant Based on Quantized Hall Resistance journal August 1980
Use of frit-disc crucibles for routine and exploratory solution growth of single crystalline samples journal December 2015
Spectroscopic evidence for a type II Weyl semimetallic state in MoTe2 journal July 2016
Fermi arc electronic structure and Chern numbers in the type-II Weyl semimetal candidate Mo x W 1 x Te 2 journal August 2016
Projector augmented-wave method journal December 1994
Linear Magnetoresistance Caused by Mobility Fluctuations in n -Doped Cd 3 As 2 journal March 2015
Type-II Weyl semimetals journal November 2015
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Topological insulators with inversion symmetry journal July 2007
Three-dimensional Dirac semimetal and quantum transport in Cd 3 As 2 journal September 2013
Topological nodal-line fermions in spin-orbit metal PbTaSe2 journal February 2016
Quantum Spin Hall Insulator State in HgTe Quantum Wells journal November 2007
Discovery of a Weyl fermion state with Fermi arcs in niobium arsenide journal August 2015
Dirac node arcs in PtSn4 journal April 2016
Experimental Realization of a Three-Dimensional Topological Insulator, Bi2Te3 journal June 2009
Observation of a three-dimensional topological Dirac semimetal phase in high-mobility Cd3As2 journal May 2014
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells journal December 2006
Discovery of a Three-Dimensional Topological Dirac Semimetal, Na3Bi journal January 2014
Observation of a large-gap topological-insulator class with a single Dirac cone on the surface journal May 2009
Topological insulators in Bi2Se3, Bi2Te3 and Sb2Te3 with a single Dirac cone on the surface journal May 2009
Weyl Semimetal Phase in Noncentrosymmetric Transition-Metal Monophosphides journal March 2015
Discovery of a Weyl fermion semimetal and topological Fermi arcs journal July 2015
Prediction of an arc-tunable Weyl Fermion metallic state in MoxW1−xTe2 journal February 2016
Inhomogeneous Electron Gas journal November 1964
Experimental discovery of a topological Weyl semimetal state in TaP journal November 2015
A topological Dirac insulator in a quantum spin Hall phase journal April 2008
Growth of single crystals from metallic fluxes journal June 1992
Tunable vacuum ultraviolet laser based spectrometer for angle resolved photoemission spectroscopy journal March 2014
Dirac cone protected by non-symmorphic symmetry and three-dimensional Dirac line node in ZrSiS journal May 2016
A stable three-dimensional topological Dirac semimetal Cd3As2 journal May 2014
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
A Weyl Fermion semimetal with surface Fermi arcs in the transition metal monopnictide TaAs class journal June 2015
Temperature-Induced Lifshitz Transition in WTe 2 journal October 2015
High-resolution X-ray luminescence extension imaging journal February 2021
Electronic structure of AlFeN films exhibiting crystallographic orientation change from c- to a-axis with Fe concentrations and annealing effect journal February 2020
Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi text January 2013
Weyl semimetal phase in non-centrosymmetric transition metal monophosphides text January 2015
Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs text January 2015
Type-II Weyl Semimetals text January 2015
Experimental discovery of a topological Weyl semimetal state in TaP text January 2015
Use of frit-disc crucibles for routine and exploratory solution growth of single crystalline samples text January 2015
Spectroscopic evidence for type II Weyl semimetal state in MoTe2 text January 2016
Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells text January 2006

Cited By (17)

Multiple Dirac cones at the surface of the topological metal LaBi journal January 2017
Orbital-flop Induced Magnetoresistance Anisotropy in Rare Earth Monopnictide CeSb journal June 2019
Measurement of the atomic orbital composition of the near-fermi-level electronic states in the lanthanum monopnictides LaBi, LaSb, and LaAs journal May 2018
Fermi surface topology and signature of surface Dirac nodes in LaBi journal July 2017
Thermoelectric properties of topological insulator lanthanum phosphide via first-principles study journal January 2019
Symmetry demanded topological nodal-line materials journal January 2018
Comparative study of the compensated semi-metals LaBi and LuBi: a first-principles approach journal April 2018
Magnetic field induced strong valley polarization in the three-dimensional topological semimetal LaBi journal October 2017
Multiple Dirac cones at the surface of the topological metal LaBi text January 2016
Presence of Exotic Electronic Surface States in LaBi and LaSb text January 2016
Symmetry Demanded Topological Nodal-line Materials text January 2017
Three-dimensional band structure of LaSb and CeSb:Absence of band inversion text January 2017
Magnetoresistance in YBi and LuBi semimetals due to nearly perfect carrier compensation text January 2017
Tunable Electronic Structure and Surface States in Rare Earth Mono-Bismuthides with Partially Filled f Shell text January 2018
Extreme magnetoresistance in the topologically trivial lanthanum monopnictide LaAs text January 2018
Comparative study of the compensated semi-metals LaBi and LuBi : A first-principles approach text January 2018
Unusual change in the Dirac-cone energy band upon two-step magnetic transition in CeBi text January 2019

Similar Records

Observation of topological surface states and strong electron/hole imbalance in extreme magnetoresistance compound LaBi
Journal Article · Tue Feb 06 00:00:00 EST 2018 · Physical Review Materials · OSTI ID:1326850

Gapless Dirac surface states in the antiferromagnetic topological insulator MnBi2Te4
Journal Article · Thu Apr 16 00:00:00 EDT 2020 · Physical Review B · OSTI ID:1326850

Fragility of Fermi arcs in Dirac semimetals
Journal Article · Wed Apr 17 00:00:00 EDT 2019 · Physical Review B · OSTI ID:1326850

Related Subjects