Pressure-induced topological phase transition in noncentrosymmetric elemental Tellurium

Abstract

Recent progress in understanding the electronic band topology and emergent topological properties encourage us to reconsider the band structure of well-known materials including elemental substances. Controlling such a band topology by external field is of particular interest from both fundamental and technological view point. Here we report the pressure-induced topological phase transition from a semiconductor to a Weyl semimetal in elemental tellurium probed by transport measurements. Pressure variation of the periods of Shubnikov-de Haas oscillations, as well as oscillations phases, shows an anomaly around the pressure theoretically predicted for topological phase transition. This behavior can be well understood by the pressure-induced band deformation and resultant band crossing effect. Moreover, effective cyclotron mass is reduced toward the critical pressure, potentially reflecting the emergence of massless linear dispersion. The present result paves the way for studying the electronic band topology in well-known compounds and topological phase transition by the external field.

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• Radial spin texture in elemental tellurium with chiral crystal structure
• Observation of Weyl point pair annihilation in a gyromagnetic photonic crystal
• Chirality-Induced Electrical Generation of Magnetism in Nonmagnetic Elemental Tellurium
• Chiral phonons: circularly polarized Raman spectroscopy and $\text{ab initio}$ calculations in a chiral crystal tellurium
• Long-range current-induced spin accumulation in chiral crystals
• Coupling charge and topological reconstructions at polar oxide interfaces
• Observation of Phonon Angular Momentum
• Obstructed insulators and flat bands in topological phase-change materials
• Reversible Non-Volatile Electronic Switching in a Near Room Temperature van der Waals Ferromagnet
• A light-induced Weyl semiconductor-to-metal transition mediated by Peierls instability
• Magneto-transport properties of tellurium under extreme conditions
• Collinear Rashba-Edelstein effect in non-magnetic chiral materials
• Photocurrents in bulk tellurium
• Chiral vortical effect in relativistic and nonrelativistic systems
• Two-dimensional Dirac semiconductor and its material realization
• Intrinsic torques emerging from anomalous velocity in magnetic textures
• Topology of chalcogen chains
• Efficient spin accumulation carried by slow relaxons in chiral tellurium
• Optical signatures of phase transitions and structural modulation in elemental tellurium under pressure
• Coherently Coupled Carrier and Phonon Dynamics in Elemental Tellurium Probed by XUV Transient Absorption
• Nonlinear bulk photocurrent probe Z2 topological phase transition
• Superconducting topological Dirac semimetals: $P6/m$-Si${}_6$ and $P6/m$-NaSi${}_6$
• Fixing Left and Right: Assignment of Chiral Elemental Crystal Structures using Kikuchi Diffraction
• Coexistence of Logarithmic and SdH Quantum Oscillations in Ferromagnetic Cr-doped Tellurium Single Crystals
• Light-programmable reorientation of the crystallographic c-axis of Tellurium thin films
• Intraband circular photogalvanic effect in Weyl semimetals
• Optical manipulation of the topological phase in ZrTe5 revealed by time- and angle-resolved photoemission