Observation of pseudo two dimensional electron transport in the rock salt type topological semimetal LaBi

Abstract

Topological insulators are characterized by an inverted band structure in the bulk and metallic surface states on the surface. In LaBi, a semimetal with a band inversion equivalent to a topological insulator, we observe surface state like behavior in the magnetoresistance. The electrons responsible for this pseudo two dimensional transport, however, originate from the bulk states rather topological surface states, which is witnessed by the angle dependent quantum oscillations of the magnetoresistance and ab initio calculations. As a consequence, the magnetoresistance exhibits strong anisotropy with large amplitude (~ 10^5 %).

21 pages, 4 figures and supplementary information

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• Compensated semimetal LaSb with unsaturated magnetoresistance
• Temperature-field phase diagram of extreme magnetoresistance in lanthanum monopnictides
• Presence of Exotic Electronic Surface States in LaBi and LaSb
• Evidence of topological insulator state in the semimetal LaBi
• Magnetoresistance in YBi and LuBi semimetals due to nearly perfect carrier compensation
• Three-dimensional band structure of LaSb and CeSb:Absence of band inversion
• Origin of the Extremely Large Magnetoresistance in the Semimetal YSb
• Extremely large magnetoresistance in topologically trivial semimetal $\alpha$-WP${}_2$
• Tunable Electronic Structure and Topological Properties of $LnPn$ ($Ln$=Ce, Pr, Gd, Sm, Yb; $Pn$=Sb, Bi)
• Magnetoresistance of compensated semimetals in confined geometries
• Separation of Electron and Hole Dynamics in the Semimetal LaSb
• Extreme magnetoresistance in the topologically trivial lanthanum monopnictide LaAs
• Fermi surface topology and signature of surface Dirac nodes in LaBi
• Extremely large magnetoresistance and Fermi surface topology of PrSb
• Nonmonotonic magnetoresistance of a two-dimensional viscous electron-hole fluid in a confined geometry
• Linear and quadratic magnetoresistance in the semimetal SiP2
• Galvanomagnetic properties of the putative type-II Dirac semimetal PtTe${}_2$
• Unusual magnetotransport in holmium monoantimonide
• Observation of Open-Orbit Fermi Surface Topology in Extremely Large Magnetoresistance Semimetal MoAs${}_2$
• Enhanced electron correlations in the new binary stannide PdSn4: a homologue of the Dirac nodal arc semimetal PtSn4
• Magnetoresistance and Shubnikov-de Hass oscillation in YSb
• Extremely Large Magnetoresistance and Electronic Structure of TmSb
• Extremely large magnetoresistance and the complete determination of the Fermi surface topology in the semimetal ScSb
• Fermi surface topology and large magnetoresistance in the topological semimetal candidate PrBi
• Unusual change in the Dirac-cone energy band upon two-step magnetic transition in CeBi
• Anomalous quantum oscillations and evidence for a non-trivial Berry phase in SmSb
• First-Principles Study of Strain Effect on Thermoelectric Properties of LaP and LaAs
• Orbital-flop Induced Magnetoresistance Anisotropy in Rare Earth Monopnictide CeSb
• Anisotropic and extreme magnetoresistance in the magnetic semimetal candidate Erbium monobismuthide
• Interplay of Magnetism and Transport in HoBi
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• Extremely large magnetoresistance in the "ordinary" metal ReO3
• Bulk band inversion and surface Dirac cones in LaSb and LaBi : Prediction of a new topological heterostructure
• Magnetic field induced strong valley polarization in the three dimensional topological semimetal LaBi
• Large Magnetoresistance in Topological Insulator Candidate TaSe3
• Pressure effect on the topologically nontrivial electronic state and transport of lutecium monobismuthide
• Reentrant Metallic Behavior in the Weyl Semimetal NbP
• Band engineering of a magnetic thin film rare earth monopnictide
• Extremely large magnetoresistance and compensated Fermi surfaces in the antiferromagnetic semimetal YbAs
• Electronic structure and open-orbit Fermi surface topology in isostructural semimetals NbAs${}_2$ and W${}_2$As${}_3$ with extremely large magnetoresistance
• Generalized Design Principles for Hydrodynamic Electron Transport in Anisotropic Metals
• Temperature-dependent Fermi surface probed by Shubnikov-de Haas oscillations in topological semimetal candidates DyBi and HoBi
• First-principles study on the electron-phonon coupling and magnetoresistance of LaBi under pressure
• Direct evidence of electron-hole compensation for XMR in topologically trivial YBi
• Tunable non-Lifshitz-Kosevich temperature dependence of Shubnikov-de Haas oscillation amplitudes in SmSb
• Comparative study of the compensated semi-metals LaBi and LuBi : A first-principles approach
• Materials and possible mechanisms of extremely large magnetoresistance: A review
• Ultrasonic investigation of the Kondo semimetal CeBi
• Magnetoresistance and Scaling Laws in Type-II Weyl Semimetal WP_2