# Quasiparticle interference on the surface of the topological crystalline insulator Pb1-xSnxSe

@article{Gyenis2013QuasiparticleIO, title={Quasiparticle interference on the surface of the topological crystalline insulator Pb1-xSnxSe}, author={Andr{\'a}s Gyenis and Ilya Drozdov and Stevan Nadj-Perge and Oliver Jeong and J. H. Seo and I Pletikosi{\'c} and Tonica Valla and Genda Gu and Ali Yazdani}, journal={Physical Review B}, year={2013}, volume={88}, pages={125414} }

Topological crystalline insulators represent a novel topological phase of matter in which the surface states are protected by discrete point group symmetries of the underlying lattice. Rock-salt lead-tin-selenide alloy is one possible realization of this phase, which undergoes a topological phase transition upon changing the lead content. We used scanning tunneling microscopy (STM) and angle resolved photoemission spectroscopy (ARPES) to probe the surface states on (001) Pb_(1−x)Sn_xSe in the…

## 30 Citations

Quasiparticle scattering from topological crystalline insulator SnTe (001) surface states

- Physics
- 2014

Recently, the topological classification of electronic states has been extended to a new class of matter known as topological crystalline insulators. Similar to topological insulators, topological…

Robust spin-polarized midgap states at step edges of topological crystalline insulators

- Materials Science, PhysicsScience
- 2016

This work uncovers the existence of one-dimensional (1D) midgap states at odd-atomic surface step edges of the three-dimensional topological crystalline insulator (Pb,Sn)Se, and experimentally shows that this stability results in a striking robustness to defects, strong magnetic fields, and elevated temperature.

Fragility of the Dirac Cone Splitting in Topological Crystalline Insulator Heterostructures.

- Physics, MedicineACS nano
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It is demonstrated that the valley interaction that splits the two Dirac cones at each X̅ is extremely sensitive to atomic-scale details of the surface, exhibiting non-monotonic changes as PbSe deposition proceeds.

Topological phase transition and conductance in topological crystalline insulator with honeycomb lattice

- Physics
- 2020

Abstract Topological crystalline insulators (TCI) represent a new state of quantum matter which is topologically protected by crystalline symmetry. We construct a minimal tight-binding model for 2D…

Scanning tunneling microscopy studies of topological insulators.

- Physics, MedicineJournal of physics. Condensed matter : an Institute of Physics journal
- 2014

STM observations have directly confirmed the existence of the topological surface states and clearly revealed their novel properties and greatly promoted the understanding of the exotic properties of the new topological phases, as well as put forward new challenges.

Length Scale and Dimensionality of Defects in Epitaxial SnTe Topological Crystalline Insulator Films

- Materials Science
- 2017

Topological crystalline insulators (TCIs) are new materials with metallic surface states protected by crystal symmetry. The properties of molecular beam epitaxy grown SnTe TCI on SrTiO3(001) are…

Observation of a Tunable Isolated Dirac Point in Ge(BixSb1-x)2Te4

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Novel topological devices require the isolation of topological surface states from trivial bulk states for electronic transport. In this study, we examine a tunable topological system,…

Scanning Tunneling Microscopy Studies of Correlated and Topological Electronic States

- Chemistry
- 2016

Understanding the dramatically diverse behavior of electrons in different crystal environments demands the precise knowledge of their nature on the atomic length scale. The ability of scanning…

Dirac mass generation from crystal symmetry breaking on the surfaces of topological crystalline insulators.

- Physics, MedicineNature materials
- 2015

Scanning tunnelling microscopy (STM) measurements of the TCI Pb1-xSnxSe for a wide range of alloy compositions reveal a symmetry-breaking distortion on the surface, which imparts mass to the otherwise massless Dirac electrons-a mechanism analogous to the long sought-after Higgs mechanism in particle physics.

Revealing surface-state transport in ultrathin topological crystalline insulator SnTe films

- Materials ScienceAPL Materials
- 2019

SnTe is a topological crystalline insulator that exhibits crystal symmetry protected topological surface states (SS), which are useful for the development of novel devices, such as low-dissipation…

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