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Title: Temperature-driven massless Kane fermions in HgCdTe crystals

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms12576· OSTI ID:1361641
 [1];  [1];  [2];  [1];  [1];  [2];  [1];  [1];  [3];  [4];  [4];  [4];  [5];  [6];  [7];  [7];  [8];  [8]
  1. Univ. of Montpellier (France)
  2. Univ. of Montpellier (France); Russian Academy of Sciences (RAS), Nizhny (Russian Federation)
  3. Univ. of Montpellier (France); Polish Academy of Sciences (PAS), Warsaw (Poland)
  4. Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
  5. Charles Univ., Prague (Czech Republic). Faculty of Mathematics and Physics; Lab. National des Champs Magnetiques Intenses, Grenoble (France)
  6. Georgia Inst. of Technology, Atlanta, GA (United States)
  7. Russian Academy of Sciences (RAS), Nizhny (Russian Federation); Lobachevsky State Univ. of Nizhny Novgorod (Russian Federation)
  8. Russian Academy of Sciences (RAS), Novosibirsk (Russian Federation); Novosibirsk State Univ. (Russian Federation)

It has recently been shown that electronic states in bulk gapless HgCdTe offer another realization of pseudo-relativistic three-dimensional particles in condensed matter systems. These single valley relativistic states, massless Kane fermions, cannot be described by any other relativistic particles. Furthermore, the HgCdTe band structure can be continuously tailored by modifying cadmium content or temperature. At critical concentration or temperature, the bandgap collapses as the system undergoes a semimetal-to-semiconductor topological phase transition between the inverted and normal alignments. Here, using far-infrared magneto-spectroscopy we explore the continuous evolution of band structure of bulk HgCdTe as temperature is tuned across the topological phase transition. We demonstrate that the rest mass of Kane fermions changes sign at critical temperature, whereas their velocity remains constant. The velocity universal value of (1.07±0.05) × 106 m s-1 remains valid in a broad range of temperatures and Cd concentrations, indicating a striking universality of the pseudo-relativistic description of the Kane fermions in HgCdTe.

Research Organization:
Florida State Univ., Tallahassee, FL (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02-07ER46451
OSTI ID:
1361641
Journal Information:
Nature Communications, Vol. 7; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 65 works
Citation information provided by
Web of Science

References (34)

Additional phonon modes related to intrinsic defects in CdHgTe journal September 2009
Temperature dependence of the fundamental absorption edge of mercury cadmium telluride journal May 1990
Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells journal December 2006
Tunable multifunctional topological insulators in ternary Heusler compounds journal May 2010
Magnetooptical Investigation of Hg1−xCdxTe Mixed Crystals. I. Semimetallic Configuration journal June 1977
Topological crystalline insulator states in Pb1−xSnxSe journal September 2012
Band structure of narrow gap semiconductors book January 1980
Observation of Weyl nodes in TaAs journal August 2015
Spectra and kinetics of THz photoconductivity in narrow-gap Hg 1– x Cd x Te ( x < 0.2) epitaxial films journal October 2013
Observation of three-dimensional massless Kane fermions in a zinc-blende crystal journal January 2014
Interband magnetooptics in narrow gap semiconductors book January 1980
Weyl semimetal phase in the non-centrosymmetric compound TaAs journal August 2015
A stable three-dimensional topological Dirac semimetal Cd3As2 journal May 2014
Observation of an intrinsic bandgap and Landau level renormalization in graphene/boron-nitride heterostructures journal July 2014
Growth of HgTe Quantum Wells for IR to THz Detectors journal April 2010
Two-dimensional gas of massless Dirac fermions in graphene journal November 2005
Colloquium: Topological insulators journal November 2010
Topological insulators and superconductors journal October 2011
Magneto-optics of massless Kane fermions: Role of the flat band and unusual Berry phase journal July 2015
Infrared Spectroscopy of Landau Levels of Graphene journal May 2007
Interaction-Induced Shift of the Cyclotron Resonance of Graphene Using Infrared Spectroscopy journal February 2010
Landau Level Spectroscopy of Ultrathin Graphite Layers journal December 2006
Cyclotron resonance of single-valley Dirac fermions in nearly gapless HgTe quantum wells journal June 2014
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
Band structure of semimagnetic Hg 1 y Mn y Te quantum wells journal July 2005
Temperature Dependence Discontinuity of the Phonon Mode Frequencies Caused by a Zero-Gap State in HgCdTe Alloys journal January 2009
Topological crystalline insulator states in Pb(1-x)Sn(x)Se text January 2012
Cyclotron resonance of single valley Dirac fermions in gapless HgTe quantum well text January 2013
Observation of an intrinsic bandgap and Landau level renormalization in graphene/boron-nitride heterostructures text January 2014
Observation of Weyl nodes in TaAs text January 2015
Landau level spectroscopy of ultrathin graphite layers text January 2006
Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells text January 2006
Infrared spectroscopy of Landau levels in graphene text January 2007

Cited By (19)

Tunable topological semimetallic phases in Kondo lattice systems journal January 2019
Quantum spin Hall insulator with a large bandgap, Dirac fermions, and bilayer graphene analog journal April 2018
Two-Dimensional Massless Dirac Fermions in Antiferromagnetic A Fe 2 As 2 ( A = Ba , Sr ) journal August 2017
Super-Klein tunneling of massive pseudospin-one particles journal July 2017
HgCdTe-based heterostructures for terahertz photonics journal March 2017
Temperature-dependent terahertz spectroscopy of inverted-band three-layer InAs/GaSb/InAs quantum well journal June 2018
Geometric valley Hall effect and valley filtering through a singular Berry flux journal July 2017
Hybridization of topological surface states with a flat band journal January 2020
Temperature-Induced Topological Phase Transition in HgTe Quantum Wells journal February 2018
Suppressed Auger scattering and tunable light emission of Landau-quantized massless Kane electrons journal August 2019
Terahertz Photoconductivity in Hg1−x Cd x Te near the transition from the direct to inverted spectrum journal August 2017
Magneto-transport in inverted HgTe quantum wells journal April 2019
3D Dirac semimetal Cd 3 As 2 : A review of material properties journal December 2018
Pressure- and temperature-driven phase transitions in HgTe quantum wells journal December 2016
Perfect transmission of 3D massive Kane fermions in HgCdTe Veselago lenses journal December 2017
Temperature-induced topological phase transition in HgTe quantum wells text January 2017
Perfect transmission of 3D massive Kane fermions in HgCdTe Veselago lenses text January 2018
Suppressed Auger scattering and tunable light emission of Landau-quantized massless Kane electrons text January 2019
Two-dimension Dirac fermions system in CdHgTe quantum wells preprint January 2019

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