Topological nature of step-edge states on the surface of the topological crystalline insulator Pb0.7Sn0.3Se

Iaia, Davide; Wang, Chang-Yan; Maximenko, Yulia; Walkup, Daniel; Sankar, R.; Chou, Fangcheng; Lu, Yuan-Ming; Madhavan, Vidya

doi:10.1103/physrevb.99.155116

Title: Topological nature of step-edge states on the surface of the topological crystalline insulator Pb_0.7Sn_0.3Se

Abstract

In addition to novel surface states, topological insulators can also exhibit robust gapless states at crystalline defects. Step edges constitute a class of common defects on the surface of crystals. In this work we establish the topological nature of one-dimensional (1D) bound states localized at step edges of the (001) surface of a topological crystalline insulator Pb_0.7Sn_0.3Se, both theoretically and experimentally. We show that the topological stability of the step-edge states arises from an emergent particle-hole symmetry of the surface low-energy physics, and demonstrate the experimental signatures of the particle-hole symmetry breaking. We also reveal the effects of an external magnetic field on the 1D bound states. Furthermore, our work suggests the possibility of similar topological step-edge modes in other topological materials with a rocksalt structure.

Authors:

Iaia, Davide ^[1]; Wang, Chang-Yan ^[2]; Maximenko, Yulia ^[1]; Walkup, Daniel ^[3]; Sankar, R. ^[4]; Chou, Fangcheng ^[5]; Lu, Yuan-Ming ^[2]; Madhavan, Vidya ^[1]

Univ. of Illinois at Urbana-Champaign, IL (United States)
The Ohio State Univ., Columbus, OH (United States)
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Academia Sinica, Taipei (Taiwan)
National Taiwan Univ., Taipei (Taiwan)

Publication Date:: Mon Apr 08 00:00:00 EDT 2019

Research Org.:: Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1612143

Alternate Identifier(s):: OSTI ID: 1505660

Grant/Contract Number:: SC0014335

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 99; Journal Issue: 15; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Materials Science; Physics; Density of states; Topological materials

Citation Formats


                    Iaia, Davide, Wang, Chang-Yan, Maximenko, Yulia, Walkup, Daniel, Sankar, R., Chou, Fangcheng, Lu, Yuan-Ming, and Madhavan, Vidya. Topological nature of step-edge states on the surface of the topological crystalline insulator Pb0.7Sn0.3Se.  United States: N. p., 2019. 
Web.  doi:10.1103/physrevb.99.155116.

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                    Iaia, Davide, Wang, Chang-Yan, Maximenko, Yulia, Walkup, Daniel, Sankar, R., Chou, Fangcheng, Lu, Yuan-Ming, & Madhavan, Vidya. Topological nature of step-edge states on the surface of the topological crystalline insulator Pb0.7Sn0.3Se.  United States.  https://doi.org/10.1103/physrevb.99.155116

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                    Iaia, Davide, Wang, Chang-Yan, Maximenko, Yulia, Walkup, Daniel, Sankar, R., Chou, Fangcheng, Lu, Yuan-Ming, and Madhavan, Vidya. Mon .  
"Topological nature of step-edge states on the surface of the topological crystalline insulator Pb0.7Sn0.3Se".  United States.  https://doi.org/10.1103/physrevb.99.155116.  https://www.osti.gov/servlets/purl/1612143.

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@article{osti_1612143,

  title        = {Topological nature of step-edge states on the surface of the topological crystalline insulator Pb0.7Sn0.3Se},

  author       = {Iaia, Davide and Wang, Chang-Yan and Maximenko, Yulia and Walkup, Daniel and Sankar, R. and Chou, Fangcheng and Lu, Yuan-Ming and Madhavan, Vidya},

  abstractNote = {In addition to novel surface states, topological insulators can also exhibit robust gapless states at crystalline defects. Step edges constitute a class of common defects on the surface of crystals. In this work we establish the topological nature of one-dimensional (1D) bound states localized at step edges of the (001) surface of a topological crystalline insulator Pb0.7Sn0.3Se, both theoretically and experimentally. We show that the topological stability of the step-edge states arises from an emergent particle-hole symmetry of the surface low-energy physics, and demonstrate the experimental signatures of the particle-hole symmetry breaking. We also reveal the effects of an external magnetic field on the 1D bound states. Furthermore, our work suggests the possibility of similar topological step-edge modes in other topological materials with a rocksalt structure.},

  doi          = {10.1103/physrevb.99.155116},

  journal      = {Physical Review B},

  number       = 15,

  volume       = 99,

  place        = {United States},

  year         = {Mon Apr 08 00:00:00 EDT 2019},

  month        = {Mon Apr 08 00:00:00 EDT 2019}

}

Copy to clipboard

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Works referencing / citing this record:

Topological properties of multilayers and surface steps in the SnTe material class
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Title: Topological nature of step-edge states on the surface of the topological crystalline insulator Pb0.7Sn0.3Se

Abstract

Citation Formats

Observation of a topological crystalline insulator phase and topological phase transition in Pb1−xSnxTe journal, January 2012

Observation of Dirac Node Formation and Mass Acquisition in a Topological Crystalline Insulator journal, August 2013

Topological insulators and superconductors journal, October 2011

Topological Classification and Stability of Fermi Surfaces journal, June 2013

Robust spin-polarized midgap states at step edges of topological crystalline insulators journal, December 2016

Nontrivial spin texture of the coaxial Dirac cones on the surface of topological crystalline insulator SnTe journal, June 2013

Strain engineering Dirac surface states in heteroepitaxial topological crystalline insulator thin films journal, August 2015

Fragility of the Dirac Cone Splitting in Topological Crystalline Insulator Heterostructures journal, December 2017

Topological phase diagram and saddle point singularity in a tunable topological crystalline insulator journal, August 2015

Protected boundary states in gapless topological phases journal, June 2013

Solitons with fermion number ½ journal, June 1976

Topological Crystalline Insulators and Topological Superconductors: From Concepts to Materials journal, March 2015

Colloquium: Topological insulators journal, November 2010

Topological crystalline insulator (Pb,Sn)Te: Surface states and their spin polarization journal, July 2013

Mapping the unconventional orbital texture in topological crystalline insulators journal, July 2014

Experimental realization of a topological crystalline insulator in SnTe journal, September 2012

Universal Probes of Two-Dimensional Topological Insulators: Dislocation and π Flux journal, March 2012

Classification of topological insulators and superconductors in three spatial dimensions journal, November 2008

Interplay between electronic topology and crystal symmetry: Dislocation-line modes in topological band insulators journal, December 2014

Edge state in graphene ribbons: Nanometer size effect and edge shape dependence journal, December 1996

Edge conduction in monolayer WTe2 journal, April 2017

Dirac mass generation from crystal symmetry breaking on the surfaces of topological crystalline insulators journal, February 2015

Classification of topological quantum matter with symmetries journal, August 2016

Periodic table for topological insulators and superconductors conference, January 2009

Experimental Observation of Topological Edge States at the Surface Step Edge of the Topological Insulator ZrTe 5 journal, April 2016

Topological crystalline insulators in the SnTe material class journal, January 2012

Two types of surface states in topological crystalline insulators journal, December 2013

Observation of topological states residing at step edges of WTe2 journal, September 2017

Symmetry breaking and Landau quantization in topological crystalline insulators journal, July 2014

One-dimensional topological edge states of bismuth bilayers journal, August 2014

Interplay of orbital effects and nanoscale strain in topological crystalline insulators journal, April 2018

Three-Dimensional Topological Insulators journal, March 2011

One-dimensional topologically protected modes in topological insulators with lattice dislocations journal, March 2009

Topological states on uneven (Pb,Sn)Se (001) surfaces journal, December 2018

Robust spin-polarized midgap states at step edges of topological crystalline insulators text, January 2016

Observation of a topological crystalline insulator phase and topological phase transition in Pb1−xSnxTe text, January 2012

Classification of topological insulators and superconductors in three spatial dimensions text, January 2008

Periodic table for topological insulators and superconductors text, January 2009

Three-Dimensional Topological Insulators text, January 2010

Experimental realization of a topological crystalline insulator in SnTe text, January 2012

The topological-crystalline-insulator (Pb,Sn)Te - surface states and their spin-polarization text, January 2013

Interplay between electronic topology and crystal symmetry: Dislocation-line modes in topological band-insulators text, January 2014

Dirac mass generation from crystal symmetry breaking on the surfaces of topological crystalline insulators text, January 2014

Topological Crystalline Insulators and Topological Superconductors: From Concepts to Materials text, January 2015

Classification of topological quantum matter with symmetries text, January 2015

Topological phase diagram and saddle point singularity in a tunable topological crystalline insulator text, January 2015

Edge conduction in monolayer WTe2 text, January 2016

Interplay of orbital effects and nanoscale strain in topological crystalline insulators text, January 2016

Topological states on uneven (Pb,Sn)Se (001) surfaces text, January 2018

Topological properties of multilayers and surface steps in the SnTe material class journal, September 2019

Proximity-induced superconductivity in a topological crystalline insulator journal, December 2019

Topological properties of multilayers and surface steps in the SnTe material class text, January 2018

Title: Topological nature of step-edge states on the surface of the topological crystalline insulator Pb_0.7Sn_0.3Se

Observation of a topological crystalline insulator phase and topological phase transition in Pb1−xSnxTe
journal, January 2012

Observation of Dirac Node Formation and Mass Acquisition in a Topological Crystalline Insulator
journal, August 2013

Topological insulators and superconductors
journal, October 2011

Topological Classification and Stability of Fermi Surfaces
journal, June 2013

Robust spin-polarized midgap states at step edges of topological crystalline insulators
journal, December 2016

Nontrivial spin texture of the coaxial Dirac cones on the surface of topological crystalline insulator SnTe
journal, June 2013

Strain engineering Dirac surface states in heteroepitaxial topological crystalline insulator thin films
journal, August 2015

Fragility of the Dirac Cone Splitting in Topological Crystalline Insulator Heterostructures
journal, December 2017

Topological phase diagram and saddle point singularity in a tunable topological crystalline insulator
journal, August 2015

Protected boundary states in gapless topological phases
journal, June 2013

Solitons with fermion number ½
journal, June 1976

Topological Crystalline Insulators and Topological Superconductors: From Concepts to Materials
journal, March 2015

Colloquium: Topological insulators
journal, November 2010

Topological crystalline insulator (Pb,Sn)Te: Surface states and their spin polarization
journal, July 2013

Mapping the unconventional orbital texture in topological crystalline insulators
journal, July 2014

Experimental realization of a topological crystalline insulator in SnTe
journal, September 2012

Universal Probes of Two-Dimensional Topological Insulators: Dislocation and $π$ Flux
journal, March 2012

Classification of topological insulators and superconductors in three spatial dimensions
journal, November 2008

Interplay between electronic topology and crystal symmetry: Dislocation-line modes in topological band insulators
journal, December 2014

Edge state in graphene ribbons: Nanometer size effect and edge shape dependence
journal, December 1996

Edge conduction in monolayer WTe2
journal, April 2017

Dirac mass generation from crystal symmetry breaking on the surfaces of topological crystalline insulators
journal, February 2015

Classification of topological quantum matter with symmetries
journal, August 2016

Periodic table for topological insulators and superconductors
conference, January 2009

Experimental Observation of Topological Edge States at the Surface Step Edge of the Topological Insulator ${ZrTe}_{5}$
journal, April 2016

Topological crystalline insulators in the SnTe material class
journal, January 2012

Two types of surface states in topological crystalline insulators
journal, December 2013

Observation of topological states residing at step edges of WTe2
journal, September 2017

Symmetry breaking and Landau quantization in topological crystalline insulators
journal, July 2014

One-dimensional topological edge states of bismuth bilayers
journal, August 2014

Interplay of orbital effects and nanoscale strain in topological crystalline insulators
journal, April 2018

Three-Dimensional Topological Insulators
journal, March 2011

One-dimensional topologically protected modes in topological insulators with lattice dislocations
journal, March 2009

Topological states on uneven (Pb,Sn)Se (001) surfaces
journal, December 2018

Robust spin-polarized midgap states at step edges of topological crystalline insulators
text, January 2016

Observation of a topological crystalline insulator phase and topological phase transition in Pb1−xSnxTe
text, January 2012

Classification of topological insulators and superconductors in three spatial dimensions
text, January 2008

Periodic table for topological insulators and superconductors
text, January 2009

Three-Dimensional Topological Insulators
text, January 2010

Experimental realization of a topological crystalline insulator in SnTe
text, January 2012

The topological-crystalline-insulator (Pb,Sn)Te - surface states and their spin-polarization
text, January 2013

Interplay between electronic topology and crystal symmetry: Dislocation-line modes in topological band-insulators
text, January 2014

Dirac mass generation from crystal symmetry breaking on the surfaces of topological crystalline insulators
text, January 2014

Topological Crystalline Insulators and Topological Superconductors: From Concepts to Materials
text, January 2015

Classification of topological quantum matter with symmetries
text, January 2015

Topological phase diagram and saddle point singularity in a tunable topological crystalline insulator
text, January 2015

Edge conduction in monolayer WTe2
text, January 2016

Interplay of orbital effects and nanoscale strain in topological crystalline insulators
text, January 2016

Topological states on uneven (Pb,Sn)Se (001) surfaces
text, January 2018

Topological properties of multilayers and surface steps in the SnTe material class
journal, September 2019

Proximity-induced superconductivity in a topological crystalline insulator
journal, December 2019

Topological properties of multilayers and surface steps in the SnTe material class
text, January 2018