Electric control of topological phase transitions in Dirac semimetal thin films

Abstract

We investigate the effect of a vertical electric field on a Dirac semimetal thin film. We show that through the interplay between the quantum confinement effect and the field-induced coupling between sub-bands, the sub-band gap can be tuned and inverted, during which the system undergoes a topological phase transition between a trivial band insulator and a quantum spin Hall insulator. Consequently, one can electrically switch the topological edge channels on and off, making the system a promising platform for constructing a topological field effect transistor.

References in corpus (8)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Quantum Spin Hall Effect and Topological Field Effect Transistor in Two-Dimensional Transition Metal Dichalcogenides
• Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
• Classification of stable three-dimensional Dirac semimetals with nontrivial topology
• Quantum transport evidence for a three-dimensional Dirac semimetal phase in Cd3As2
• Linear magnetoresistance caused by mobility fluctuations in the n-doped Cd3As2
• Thermoelectric properties of Weyl and Dirac semimetals

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• Dirac and Weyl Materials: Fundamental Aspects and Some Spintronics Applications
• Probing the Chiral Anomaly by Planar Hall Effect in Three-dimensional Dirac Semimetal Cd3As2 Nanoplates
• Atomically Thin Quantum Spin Hall Insulators
• Overcoming Boltzmann's Tyranny in a Transistor via the Topological Quantum Field Effect
• Finite-size effects in non-Hermitian topological systems
• Two-Dimensional Dirac Fermions in Thin Films of Cd3As2
• Nonvolatile ferroelectric control of topological states in 2D heterostructures
• Electrical Contact between an Ultrathin Topological Dirac Semimetal and a Two-Dimensional Material
• Floquet topological insulator phase in a Weyl semimetal thin film with disorder
• Electrically tunable valley polarization in Weyl semimetals with tilted energy dispersion
• Dimensional Crossover and Topological Phase Transition in Dirac Semimetal Na3Bi Films
• Topological Anderson insulator phase in a Dirac-semimetal thin film
• Progress in epitaxial thin-film Na3Bi as a topological electronic material
• Quantum Transport in Weyl Semimetal Thin Films in the Presence of Spin-Orbit Coupled Impurities
• Spin-polarized tunable photocurrents
• Quantum Hall effect originated from helical edge states in Cd${}_3$As${}_2$
• Quantum oscillation and nontrivial transport in the Dirac Semimetal Cd3As2 nanodevice
• Perovskite-type YRh${}_3$B with multiple types of nodal point and nodal line states
• Composite Dirac Semimetal
• Sign change in the anomalous Hall effect and strong transport effects in a 2D massive Dirac metal due to spin-charge correlated disorder
• Evidence for pressure-induced node-pair annihilation in Cd3As2
• Broadband strong optical dichroism in topological Dirac semimetals with Fermi velocity anisotropy
• Strain-gradient induced topological transition in bent nanoribbons of the Dirac semimetal Cd3As2
• Optimizing Topological Switching in Confined 2D-Xene Nanoribbons via Finite-Size Effects
• High throughput inverse design and Bayesian optimization of functionalities: spin splitting in two-dimensional compounds
• Manipulating topological-insulator properties using quantum confinement
• Electrostatic Modulation of the Electronic Properties of Dirac Semimetal Na3Bi
• Temperature Dependent n-p Transition of 3 Dimensional Dirac Semimetal Na${}_3$Bi Thin Film
• Electric field manipulation of surface states in topological semimetals
• Quantum Transport in Air-stable Na3Bi Thin Films
• Emergent topological fields and relativistic phonons within the thermoelectricity in topological insulators
• Quantum spin Hall effect in III-V semiconductors at elevated temperatures: advancing topological electronics
• Effect of the external fields in high Chern number quantum anomalous Hall insulators
• Dirac semimetal thin films in in-plane magnetic fields
• Chiral edge state coupling theory of transport in quantum anomalous Hall insulators
• Electrical tuning of helical edge states in topological multilayers
• Magnetic Field Induced Quantum Metric Dipole in Dirac Semimetal Cd3As2
• Unidirectional magneto-transport of linearly dispersing topological edge states
• Absence of backscattering in Fermi-arc-mediated conductivity of topological Dirac semimetal Cd${}_3$As${}_2$
• Interface controlled Berry phase and anisotropic spin-charge conversion in altermagnet-topological insulator bilayers