Mitrofanovite Pt<sub>3</sub>Te<sub>4</sub>: A Topological Metal with Termination-Dependent Surface Band Structure and Strong Spin Polarization
Jun Fujii, Barun Ghosh, I. Vobornik, Anan Bari Sarkar, Debashis Mondal, Chia‐Nung Kuo, François C. Bocquet, Lixue Zhang, Danil W. Boukhvalov, C. S. Lue, Amit Agarwal, Antonio Politano
Abstract
. Our results demonstrate that mitrofanovite is a topological metal with termination-dependent (i) electronic band structure and (ii) spin texture. Despite their distinct electronic character, both surface terminations are characterized by electronic states exhibiting strong spin polarization with a node at the Γ point and sign reversal across the Γ point, indicating their topological nature and the possibility of realizing two distinct electronic configurations (both of them with topological features) on the surface of the same material.
Topics & Concepts
SpintronicsTopological insulatorScanning tunneling microscopePhotoemission spectroscopyQuasiparticleCondensed matter physicsSurface statesElectronic structureAngle-resolved photoemission spectroscopyTopology (electrical circuits)Scanning tunneling spectroscopyMaterials scienceSpectroscopySuperconductivityPhysicsSurface (topology)FerromagnetismQuantum mechanicsSpectral lineGeometryCombinatoricsMathematicsTopological Materials and PhenomenaAdvanced Condensed Matter PhysicsGraphene research and applications