Quantum Coherent Transport in SnTe Topological Crystalline Insulator Thin Films

Abstract

Topological crystalline insulators (TCI) are unique systems where a band inversion that is protected by crystalline mirror symmetry leads to a multiplicity of topological surface states. Binary SnTe is an attractive lead-free TCI compound; the present work on high-quality thin films provides a route for increasing the mobility and reducing the carrier density of SnTe without chemical doping. Results of quantum coherent magnetotransport measurements reveal a multiplicity of Dirac surface states that are unique to TCI. Modeling of the weak antilocalization shows variations in the extracted number of carrier valleys that reflect the role of coherent intervalley scattering in coupling different Dirac states on the degenerate TCI surface.

arXiv commentUpdated abstract to published version

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Cited by in corpus (26)

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• Strain engineering Dirac surface states in heteroepitaxial topological crystalline insulator thin films
• Revealing surface states in In-doped SnTe superconducting nanoplates with low bulk mobility
• Two-dimensional quantum transport of multivalley (111) surface state in topological crystalline insulator SnTe thin films
• Electrically Tunable Quantum Spin Hall State in Topological Crystalline Insulator Thin films
• Inducing magnetism onto the surface of a topological crystalline insulator
• Experimental evidence for topological surface states wrapping around bulk SnTe crystal
• Indium substitution effect on the topological crystalline insulator family (Pb${}_{1-x}$Sn${}_x$)${}_{1-y}$In${}_y$Te: Topological and superconducting properties
• Broken mirror symmetry tuned topological transport in PbTe/SnTe heterostructures
• Proximity-induced superconductivity and quantum interference in topological crystalline insulator SnTe thin film devices
• Thin film growth of a topological crystal insulator SnTe on the CdTe (111) surface by molecular beam epitaxy
• Observation of coexisting weak localization and superconducting fluctuations in strained Sn1-xInxTe thin films
• Chromium-Induced Ferromagnetism with Perpendicular Anisotropy in Topological Crystalline Insulator SnTe (111) Thin Films
• Surface-state-dominated transport in crystals of the topological crystalline insulator In-doped Pb${}_{1-x}$Sn${}_x$Te
• Observation of Ultrahigh Mobility Surface States in a Topological Crystalline Insulator by Infrared Spectroscopy
• Thermoelectric effects in topological crystalline insulators
• Signatures of dephasing by mirror-symmetry breaking in weak-antilocalization magnetoresistance across the topological transition in Pb${}_{1-x}$Sn${}_x$Se
• Electron and hole contributions to normal-state transport in the superconducting system Sn${}_{1-x}$In${}_x$Te
• Unusual phonon density of states and response to the superconducting transition in the In-doped topological crystalline insulator Pb${}_{0.5}$Sn${}_{0.5}$Te
• Weak antilocalization beyond the fully diffusive regime in Pb1-xSnxSe topological quantum wells
• Band structure of topological insulators from noise measurements in tunnel junctions
• Quantum transport and mobility spectrum of topological carriers in (001) SnTe/PbTe heterojunctions
• Large linear magnetoresistance and evidence of degeneracy lifting of valence bands in rhombohedral phase of topological crystalline insulator SnTe
• Direct probe of ferromagnetic proximity effect at the interface in Fe/SnTe heterostructure by polarized neutron reflectometry
• Fermiology and transport properties of the proposed topological crystalline insulator SrAg4Sb2
• Proximity-Induced Superconductivity in a Topological Crystalline Insulator