Quasiparticle Interference on the Surface of Topological Crystalline Insulator Pb(1-x)Sn(x)Se

Abstract

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${}_x$Se in the topologically non-trivial (x=0.23) and topologically trivial (x=0) phases. We observed quasiparticle interference with STM on the surface of the topological crystalline insulator and demonstrated that the measured interference can be understood from ARPES studies and a simple band structure model. Furthermore, our findings support the fact that Pb${}_{0.77}$Sn${}_{0.23}$Se and PbSe have different topological nature.

5 pages, 4 figures

References in corpus (7)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Topological Crystalline Insulators
• First direct observation of Spin-textures in Topological Insulators : Spin-resolved ARPES as a probe of topological quantum spin Hall effect and Berry's phase
• Topological Surface States Protected From Backscattering by Chiral Spin Texture
• Transmission of topological surface states through surface barriers

Cited by in corpus (24)

• Topological Surface Transport in Epitaxial SnTe Thin Films Grown on Bi2Te3
• Robust spin-polarized midgap states at step edges of topological crystalline insulators
• Dirac mass generation from crystal symmetry breaking on the surfaces of topological crystalline insulators
• Sn-doped Bi1.1Sb0.9Te2S, a bulk topological insulator with ideal properties
• Symmetry breaking and Landau quantization in topological crystalline insulators
• Mapping the unconventional orbital texture in topological crystalline insulators
• Observation of topological crystalline insulator surface states on (111)-oriented Pb${}_{1-x}$Sn${}_x$Se films
• Quasiparticle interference on type-I and type-II Weyl semimetal surfaces: a review
• Classification of topological crystalline insulators based on representation theory
• Finite-size-effect-induced topological phase transition in a topological crystalline insulator
• Quasiparticle scattering from topological crystalline insulator SnTe (001) surface states
• Inducing Lifshitz transition by extrinsic doping of surface bands in topological crystalline insulator Pb${}_{1-x}$Sn${}_x$Se
• Field Theory of Nematicity in the Spontaneous Quantum Anomalous Hall effect
• Ferroic Berry Curvature Dipole in a Topological Crystalline Insulator at Room Temperature
• Observation of oscillatory relaxation in the Sn-terminated surface of epitaxial rock-salt SnSe $\{111\}$ topological crystalline insulator
• Thermoelectric effects in topological crystalline insulators
• Optical investigation of thermoelectric topological crystalline insulator Pb${}_{0.77}$Sn${}_{0.23}$Se
• Glide-symmetric topological crystalline insulator phase in a nonprimitive lattice
• Non-adiabatic bulk-surface oscillations in driven topological insulators
• Absence of a Dirac gap in ferromagnetic Cr${}_x$(Bi${}_{0.1}$Sb${}_{0.9}$)${}_{2-x}$Te${}_3$
• Fragility of the Dirac Cone Splitting in Topological Crystalline Insulator Heterostructures
• Hedgehog spin texture and competing orders associated with strains on the surface of a topological crystalline insulator
• Fermi surface instabilities of symmetry-breaking and topological types on the surface of a three-dimensional topological insulator
• Possible Topological Superconductivity in a Topological Crystalline Insulator (Pb${}_{1-x}$Sn${}_x$)${}_{1-y}$In${}_y$Te