ARPES study of the epitaxially grown topological crystalline insulator SnTe(111)

Abstract

SnTe is a prototypical topological crystalline insulator, in which the gapless surface state is protected by a crystal symmetry. The hallmark of the topological properties in SnTe is the Dirac cones projected to the surfaces with mirror symmetry, stemming from the band inversion near the L points of its bulk Brillouin zone, which can be measured by angle-resolved photoemission. We have obtained the (111) surface of SnTe film by molecular beam epitaxy on BaF2(111) substrate. Photon-energy-dependence of in situ angle-resolved photoemission, covering multiple Brillouin zones in the direction perpendicular tothe (111) surface, demonstrate the projected Dirac cones at the Gamma_bar and M_bar points of the surface Brillouinzone. In addition, we observe a Dirac-cone-like band structure at the Gamma point of the bulk Brillouin zone,whose Dirac energy is largely different from those at the Gamma_bar and M_bar points.

arXiv comment8 pages, 4 figures

References in corpus (26)

• Topological Insulators
• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Non-Abelian Anyons and Topological Quantum Computation
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
• Topological Crystalline Insulators
• Topological Crystalline Insulators in the SnTe Material Class
• Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
• Experimental realization of a topological crystalline insulator in SnTe
• Topological crystalline insulator states in Pb(1-x)Sn(x)Se
• A topological crystalline insulator (TCI) phase via topological phase transition and crystalline mirror symmetry
• Observation of Majorana fermions with spin selective Andreev reflection in the vortex of topological superconductor
• Chiral Topological Superconductor From the Quantum Hall State
• Surface States of Topological Crystalline Insulators in IV-VI Semiconductors
• Topological Surface Transport in Epitaxial SnTe Thin Films Grown on Bi2Te3
• Experimental observation of Dirac-like surface states and topological phase transition in Pb${}_{1-x}$Sn${}_x$Te(111) films
• Two types of Dirac-cone surface states on (111) surface of topological crystalline insulator SnTe
• The topological-crystalline-insulator (Pb,Sn)Te - surface states and their spin-polarization
• Topological Superconductivity and Majorana Fermions in Metallic Surface-States
• Observation of topological crystalline insulator surface states on (111)-oriented Pb${}_{1-x}$Sn${}_x$Se films
• $(111)$ surface states of SnTe
• Observation of surface states on heavily indium doped SnTe(111), a superconducting topological crystalline insulator
• High-Pressure Synthesis and Superconductivity of Ag-doped Topological Crystalline Insulator SnTe (Sn1-xAgxTe with x = 0-0.5)

Cited by in corpus (6)

• Chromium-Induced Ferromagnetism with Perpendicular Anisotropy in Topological Crystalline Insulator SnTe (111) Thin Films
• Observation of oscillatory relaxation in the Sn-terminated surface of epitaxial rock-salt SnSe $\{111\}$ topological crystalline insulator
• Topological Fermi-arc surface state covered by floating electrons on a two-dimensional electride
• Fermiology and transport properties of the proposed topological crystalline insulator SrAg4Sb2
• Entropy Driven Inductive Response of Topological Insulators
• Direct observation of the electronic structure of even-layer puckered SnTe monolayer films on graphene