Multi-terminal Conductance at the Surface of a Weyl Semimetal

Abstract

Weyl semimetals are a new paradigmatic topological phase of matter featuring a gapless spectrum. One of its most distinctive features is the presence of Fermi arc surface states. Here, we report on atomistic simulations of the dc conductance and quantum Hall response of a minimal Weyl semimetal. By using scattering theory we show that a quantized Hall conductance with a non-vanishing longitudinal conductance emerges associated to the Fermi arc surface states with a remarkable robustness to high concentrations of defects in the system. Additionally, we predict that a slab of a Weyl semimetal with broken time-reversal symmetry bears persistent currents fully determined by the system size and the lattice parameters.

7 pages, 7 figures

References in corpus (7)

• Weyl Semimetals, Fermi Arcs and Chiral Anomalies (A Short Review)
• Chiral anomaly as origin of planar Hall effect in Weyl semimetals
• Photocurrents in Weyl semimetals
• 3D quantum Hall effect of Fermi arcs in topological semimetals
• Discovery of a new type of topological Weyl fermion semimetal state in Mo${}_x$W${}_{1-x}$Te${}_2$
• Disorder effect on chiral edge modes and anomalous Hall conductance in Weyl semimetals
• Magnetotransport in Weyl semimetal nanowires

Cited by in corpus (4)

• Kondo screening regimes in multi-Dirac and Weyl systems
• Topological van Hove singularities at phase transitions in Weyl metals
• Field theory approach to the quantum transport in Weyl semimetals
• Rashba coupling and spin switching through surface states of Dirac semimetals