Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Unraveling the Topological Phase of ZrTe5 via Magnetoinfrared Spectroscopy

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [3];  [4];  [5];  [3];  [4];  [6];  [7];  [7];  [3]
  1. National High Magnetic Field Laboratory, Tallahassee, FL (United States); School of Physics, Georgia Institute of Technology
  2. Georgia Inst. of Technology, Atlanta, GA (United States); Peking University, Beijing (China)
  3. Georgia Inst. of Technology, Atlanta, GA (United States)
  4. Univ. of Tennessee, Knoxville, TN (United States)
  5. Peking University, Beijing (China)
  6. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  7. National High Magnetic Field Laboratory, Tallahassee, FL (United States)
+ Show Author Affiliations

For materials near the phase boundary between weak and strong topological insulators (TIs), their band topology depends on the band alignment, with the inverted (normal) band corresponding to the strong (weak) TI phase. Here, taking the anisotropic transition-metal pentatelluride ZrTe5 as an example, we show that the band inversion manifests itself as a second extremum (band gap) in the layer stacking direction, which can be probed experimentally via magnetoinfrared spectroscopy. Specifically, we find that the band anisotropy of ZrTe5 features a slow dispersion in the layer stacking direction, along with an additional set of optical transitions from a band gap next to the Brillouin zone center. Furthermore, our work identifies ZrTe5 as a strong TI at liquid helium temperature and provides a new perspective in determining band inversion in layered topological materials.

Research Organization:
Georgia Inst. of Technology, Atlanta, GA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
Grant/Contract Number:
FG02-07ER46451; SC0018660; SC0020254; NA0003525
OSTI ID:
1642423
Alternate ID(s):
OSTI ID: 1658381
OSTI ID: 1670196
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 125; ISSN 1079-7114; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (42)

Spin--Orbit Coupling Effects in Two-Dimensional Electron and Hole Systems book January 2003
Spectroscopic evidence for the gapless electronic structure in bulk ZrTe 5 journal August 2017
Observation of quasi-two-dimensional Dirac fermions in ZrTe5 journal November 2016
Electronic evidence of temperature-induced Lifshitz transition and topological nature in ZrTe5 journal May 2017
Topological semimetals journal October 2016
Topological insulators in Bi2Se3, Bi2Te3 and Sb2Te3 with a single Dirac cone on the surface journal May 2009
Single valley Dirac fermions in zero-gap HgTe quantum wells journal February 2011
Chiral magnetic effect in ZrTe5 journal February 2016
Anomalous Hall effect in ZrTe5 journal March 2018
Three-dimensional quantum Hall effect and metal–insulator transition in ZrTe5 journal May 2019
Quantum Oscillations at Integer and Fractional Landau Level Indices in Single-Crystalline ZrTe5 journal October 2016
Transition between strong and weak topological insulator in ZrTe5 and HfTe5 journal April 2017
Spectroscopic evidence for bulk-band inversion and three-dimensional massive Dirac fermions in ZrTe 5 journal January 2017
Vanishing quantum oscillations in Dirac semimetal ZrTe 5 journal August 2018
Dirac electron behavior and NMR evidence for topological band inversion in ZrTe 5 journal October 2019
Model Hamiltonian for topological insulators journal July 2010
Dirac semimetal and topological phase transitions in A 3 Bi ( A = Na , K, Rb) journal May 2012
Three-dimensional Dirac semimetal and quantum transport in Cd 3 As 2 journal September 2013
Cyclotron resonance of single-valley Dirac fermions in nearly gapless HgTe quantum wells journal June 2014
Temperature-driven band inversion in Pb 0.77 Sn 0.23 Se : Optical and Hall effect studies journal December 2014
Optical spectroscopy study of the three-dimensional Dirac semimetal ZrTe 5 journal August 2015
Nature and topology of the low-energy states in ZrTe 5 journal August 2016
Probing the semiconductor to semimetal transition in InAs/GaSb double quantum wells by magneto-infrared spectroscopy journal January 2017
Landau-level spectroscopy of massive Dirac fermions in single-crystalline ZrTe 5 thin flakes journal July 2017
Dirac parameters and topological phase diagram of P b 1 − x S n x Se from magnetospectroscopy journal December 2018
Carrier Scattering from Dynamical Magnetoconductivity in Quasineutral Epitaxial Graphene journal November 2011
Magneto-Optics of Massive Dirac Fermions in Bulk Bi 2 Se 3 journal May 2015
Magnetoinfrared Spectroscopy of Landau Levels and Zeeman Splitting of Three-Dimensional Massless Dirac Fermions in ZrTe 5 journal October 2015
Experimental Observation of Topological Edge States at the Surface Step Edge of the Topological Insulator ZrTe 5 journal April 2016
Evidence for a Strong Topological Insulator Phase in ZrTe 5 journal November 2016
Disruption of the Accidental Dirac Semimetal State in ZrTe 5 under Hydrostatic Pressure journal May 2017
Temperature-Driven Topological Phase Transition and Intermediate Dirac Semimetal Phase in ZrTe 5 journal October 2018
Two-Dimensional Conical Dispersion in ZrTe 5 Evidenced by Optical Spectroscopy journal May 2019
Transition-Metal Pentatelluride ZrTe 5 and HfTe 5 : A Paradigm for Large-Gap Quantum Spin Hall Insulators journal January 2014
Evidence for Topological Edge States in a Large Energy Gap near the Step Edges on the Surface of ZrTe 5 journal May 2016
Bipolar Conduction as the Possible Origin of the Electronic Transition in Pentatellurides: Metallic vs Semiconducting Behavior journal May 2018
Colloquium: Topological insulators journal November 2010
Topological insulators and superconductors journal October 2011
Weyl and Dirac semimetals in three-dimensional solids journal January 2018
Evidence for a strain-tuned topological phase transition in ZrTe 5 journal August 2019
Quantum Spin Hall Insulator State in HgTe Quantum Wells journal November 2007
Dirac Fermions in Solids: From High-T c Cuprates and Graphene to Topological Insulators and Weyl Semimetals journal March 2014

Similar Records

Temperature dependence of the energy band gap in ZrTe5 : Implications for the topological phase
Journal Article · Tue Jan 24 23:00:00 EST 2023 · Physical Review. B · OSTI ID:1963584

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
Band gap
Landau levels
Topological materials