Gate-tunable Lifshitz transition of Fermi arcs and its nonlocal transport signatures
arXiv:2210.12956 · doi:10.1088/0256-307X/40/9/097301
Abstract
One hallmark of the Weyl semimetal is the emergence of Fermi arcs (FAs) in the surface Brillouin zone that connect the projected Weyl nodes of opposite chirality. The unclosed FAs can give rise to various exotic effects that have attracted tremendous research interest. The configurations of the FAs are usually thought to be determined fully by the band topology of the bulk states, which seems impossible to manipulate. Here, we show that the FAs can be simply modified by a surface gate voltage. Because the penetration length of the surface states depends on the in-plane momentum, a surface gate voltage induces an effective energy dispersion. As a result, a continuous deformation of the surface band can be implemented by tuning the surface gate voltage. In particular, as the saddle point of the surface band meets the Fermi energy, the topological Lifshitz transition takes place for the FAs, during which the Weyl nodes switch their partners connected by the FAs. Accordingly, the magnetic Weyl orbits composed of the FAs on opposite surfaces and chiral Landau bands inside the bulk change its configurations. We show that such an effect can be probed by the nonlocal transport measurements in a magnetic field, in which the switch on and off of the nonlocal conductance by the surface gate voltage signals the Lifshitz transition. Our work opens a new route for manipulating the FAs by surface gates and exploring novel transport phenomena associated with the topological Lifshitz transition.
arXiv comment9 pages, 5 figures
References in corpus (56)
- Topological Insulators
- Topological insulators and superconductors
- Quantum Spin Hall Effect in Graphene
- Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
- Weyl and Dirac Semimetals in Three Dimensional Solids
- Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
- Experimental discovery of Weyl semimetal TaAs
- Topological nodal semimetals
- Theoretical Discovery/Prediction: Weyl Semimetal states in the TaAs material (TaAs, NbAs, NbP, TaP) class
- Observation of the chiral anomaly induced negative magneto-resistance in 3D Weyl semi-metal TaAs
- Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals
- Kwant: a software package for quantum transport
- Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
- Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal NbP
- Observation of Weyl nodes in TaAs
- Discovery of a Weyl Fermion semimetal state in NbAs
- Topological response in Weyl semimetals and the chiral anomaly
- Experimental observation of topological Fermi arcs in type-II Weyl semimetal MoTe2
- Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl Fermion semimetal
- Prediction of the Weyl semimetal in the orthorhombic MoTe2
- The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi
- Quantum Oscillations from Surface Fermi-Arcs in Weyl and Dirac Semi-Metals
- Spectroscopic evidence for type II Weyl semimetal state in MoTe2
- Observation of the Type-II Weyl Semimetal Phase in MoTe2
- Experimental discovery of a topological Weyl semimetal state in TaP
- MoTe2: A Type-II Weyl Topological Metal
- Discovery of Weyl fermion semimetals and topological Fermi arc states
- Chiral anomaly and transport in Weyl metals
- Observation of Weyl nodes and Fermi arcs in TaP
- Adler-Bell-Jackiw anomaly in Weyl semi-metals: Application to Pyrochlore Iridates
- Gyrotropic magnetic effect and the magnetic moment on the Fermi surface
- TaIrTe4 a ternary Type-II Weyl semi-metal
- Fermi arcs and their topological character in the candidate type-II Weyl semimetal MoTe2
- Helicity protected ultrahigh mobility Weyl fermions in NbP
- Discovery of a new type of topological Weyl fermion semimetal state in MoWTe
- Kohn-Luttinger superconductivity in graphene
- Chiral magnetic effect and natural optical activity in (Weyl) metals
- Magneto-transport phenomena related to the chiral anomaly in Weyl semimetals
- Quantum Transport in Topological Semimetals under Magnetic Fields
- A condensed matter realization of the axial magnetic effect
- Experimental realization of type-II Weyl state in non-centrosymmetric TaIrTe
- Topological Invariants of Metals and Related Physical Effects
- Unsaturated both large positive and negative magnetoresistance in Weyl Semimetal TaP
- Magnetic phases near the Van Hove singularity in s- and d-band Hubbard model
- Observation of Fermi Arcs in non-Centrosymmetric Weyl Semi-metal Candidate NbP
- Topological Lifshitz Transitions and Fermi Arc Manipulation in Weyl Semimetal NbAs
- Quasiparticle interference on type-I and type-II Weyl semimetal surfaces: a review
- Anomalous Fraunhofer patterns in gated Josephson junctions based on the bulk-insulating topological insulator BiSbTeSe2
- Observation of Weyl nodes in robust type-II Weyl semimetal WP2
- Proposal for detecting nodal-line semimetal surface-states with resonant spin-flipped reflection
- Quantum oscillations in Noncentrosymmetric Weyl semimetals RAlSi (R = Sm and Ce)
- Andreev Reflection in Fermi Arc Surface States of Weyl Semimetals
- Detection of Fermi Arcs in Weyl Semimetals through Surface Negative Refraction
- Magnetoresistance and Kondo effect in the nodal-line semimetal VAs
- Second-harmonic response as a tool to detect spin textures in magnetic nodal-line semimetal FeGeTe
- Conductance oscillation in surface junctions of Weyl semimetals