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Two types of surface states in topological crystalline insulators

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [3]
  1. Tsinghua Univ., Beijing (China); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
  2. Tsinghua Univ., Beijing (China)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Topological crystalline insulators (TCIs) are new states of matter whose topological distinction relies on the crystal symmetry of periodic solids. The first material realization of TCIs has recently been predicted and observed in IV-VI semiconductor SnTe and related alloys. By combining k∙p theory and band structure calculation, we present a unified approach to study topological surface states on various crystal surfaces of these TCI materials based on the electronic structure of the bulk. Depending on the surface orientation, we find two types of surface states with qualitatively different properties. Specifically, the (111) surface states consist of four Dirac cones centered at $$\overline{Γ}$$ and $$\overline{m}$$, while Dirac cones on (001) and (110) surfaces are located at non-time-reversal-invariant momenta. The latter types of surface states exhibit a Lifshitz transition as a function of Fermi energy, which is joined by a Van Hove singularity in the density of states arising from saddle points in the band structure.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0010526
OSTI ID:
1505722
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 24 Vol. 88; ISSN 1098-0121; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Interfacial-state coupling induced topological phase transitions in SnTe (110) thin film text January 2016
Length Scale and Dimensionality of Defects in Epitaxial SnTe Topological Crystalline Insulator Films journal January 2017
Direct observation and temperature control of the surface Dirac gap in a topological crystalline insulator journal October 2015
Spin-filtered edge states with an electrically tunable gap in a two-dimensional topological crystalline insulator journal December 2013
Dirac mass generation from crystal symmetry breaking on the surfaces of topological crystalline insulators journal February 2015
Strain engineering Dirac surface states in heteroepitaxial topological crystalline insulator thin films journal August 2015
Mapping the unconventional orbital texture in topological crystalline insulators journal July 2014
Strain-induced partially flat band, helical snake states and interface superconductivity in topological crystalline insulators journal November 2014
Three-dimensional topological acoustic crystals with pseudospin-valley coupled saddle surface states journal November 2018
Topological nanomaterials journal June 2019
Suppressed topological phase transitions due to nonsymmorphism in SnTe stacking journal June 2018
Massive and massless Dirac fermions in Pb1−xSnxTe topological crystalline insulator probed by magneto-optical absorption journal February 2016
A methodical study of quantum phase engineering in topological crystalline insulator SnTe and related alloys journal January 2019
Enhancement of the anisotropic thermoelectric power factor of topological crystalline insulator SnTe and related alloys via external perturbations journal January 2019
Topological crystalline insulator Pb x Sn 1-x Te thin films on SrTiO 3 (001) with tunable Fermi levels journal May 2014
Strain engineering of valley polarized currents in topological crystalline insulators journal May 2019
Interacting topological insulators: a review journal October 2018
Quantum spin Hall effect in IV-VI topological crystalline insulators journal June 2015
Ferromagnetic phase transition in topological crystalline insulator thin films: Interplay of anomalous Hall angle and magnetic anisotropy journal October 2019
Two types of Dirac-cone surface states on the (111) surface of the topological crystalline insulator SnTe journal December 2013
Observation of topological crystalline insulator surface states on (111)-oriented Pb 1 − x Sn x Se films journal February 2014
Structural stability and topological surface states of the SnTe (111) surface journal March 2014
Role of surface passivation in the formation of Dirac states at polar surfaces of topological crystalline insulators: The case of SnTe(111) journal April 2014
Symmetry breaking and Landau quantization in topological crystalline insulators journal July 2014
Topological nonsymmorphic crystalline insulators journal August 2014
Engineering relativistic effects in ferroelectric SnTe journal October 2014
Electrically tunable quantum spin Hall state in topological crystalline insulator thin films journal February 2015
Surface-state-dominated transport in crystals of the topological crystalline insulator In-doped Pb 1 − x Sn x Te journal May 2015
Topological phase diagram and saddle point singularity in a tunable topological crystalline insulator journal August 2015
Coupled-layer description of topological crystalline insulators journal September 2016
Surface magnetism in topological crystalline insulators journal November 2017
Observation of gapless Dirac surface states in ZrGeTe journal March 2018
Dirac parameters and topological phase diagram of P b 1 − x S n x Se from magnetospectroscopy journal December 2018
Spin stiffness and domain walls in Dirac-electron mediated magnets journal January 2019
Three-dimensional superconductors with hybrid higher-order topology journal March 2019
Topological nature of step-edge states on the surface of the topological crystalline insulator Pb 0.7 Sn 0.3 Se journal April 2019
Large-Chern-Number Quantum Anomalous Hall Effect in Thin-Film Topological Crystalline Insulators journal January 2014
Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb 1 − x Sn x Te ( 111 ) Films journal May 2014
Quantum Nonlinear Hall Effect Induced by Berry Curvature Dipole in Time-Reversal Invariant Materials journal November 2015
SU(3) Quantum Hall Ferromagnetism in SnTe journal January 2016
Splitting the Hinge Mode of Higher-Order Topological Insulators journal July 2019
Topological crystalline insulators with C 2 rotation anomaly journal August 2019
Electronic Structure of the Metastable Epitaxial Rock-Salt SnSe { 111 } Topological Crystalline Insulator journal October 2017
Quantum Hall Ferroelectrics and Nematics in Multivalley Systems journal December 2017
Classification of topological quantum matter with symmetries journal August 2016
Higher-order topological insulators journal June 2018
New classes of topological crystalline insulators having surface rotation anomaly journal December 2019
Two types of Dirac-cone surface states on (111) surface of topological crystalline insulator SnTe text January 2013
Engineering relativistic effects in ferroelectric SnTe text January 2014
Dirac mass generation from crystal symmetry breaking on the surfaces of topological crystalline insulators text January 2014
Quantum Spin Hall Effect in IV-VI Topological Crystalline Insulators text January 2015
Electrically Tunable Quantum Spin Hall State in Topological Crystalline Insulator Thin films text January 2015
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Topological phase diagram and saddle point singularity in a tunable topological crystalline insulator text January 2015
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Interacting topological insulators: a review text January 2018
Spin Stiffness and Domain Walls in Dirac-Electron Mediated Magnets text January 2018
Ferromagnetic phase transition in topological crystalline insulator thin films: interplay of anomalous Hall angle and magnetic anisotropy text January 2019
Higher-order topological insulators text January 2018

Figures / Tables (4)


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