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.

Updated abstract to published version

References in corpus (7)

• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Topological Crystalline Insulators
• Weak localisation magnetoresistance and valley symmetry in graphene
• Intervalley scattering, long-range disorder, and effective time reversal symmetry breaking in graphene
• Weak Localization and Antilocalization in Topological Insulator Thin Films with Coherent Bulk-Surface Coupling
• Spin-polarized (001) surface states of the topological crystalline insulator Pb_{0.73}Sn_{0.27}Se
• Inducing Lifshitz transition by extrinsic doping of surface bands in topological crystalline insulator Pb${}_{1-x}$Sn${}_x$Se

Cited by in corpus (14)

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• 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
• Observation of coexisting weak localization and superconducting fluctuations in strained Sn1-xInxTe thin films
• Surface-state-dominated transport in crystals of the topological crystalline insulator In-doped Pb${}_{1-x}$Sn${}_x$Te
• Thermoelectric effects in topological crystalline insulators
• Weak antilocalization beyond the fully diffusive regime in Pb1-xSnxSe topological quantum wells
• 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
• Fermiology and transport properties of the proposed topological crystalline insulator SrAg4Sb2
• Proximity-Induced Superconductivity in a Topological Crystalline Insulator