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Surface States in Holographic Weyl Semimetals
Markus Heinrich1, Amadeo Jiménez-Alba2, Sebastian Moeckel2
1Theoretisch-Physikalisches Institut, Friedrich Schiller University Jena, Max-Wien-Platz 1, 07743 Jena, Germany and Institute for Theoretical Physics, University of Cologne, Zülpicher Straße 77, 50937 Cologne, Germany.
Abstract:
We study the surface states of a strongly coupled Weyl semimetal within holography. By explicit numerical computation of an inhomogeneous holographic Weyl semimetal, we observe the appearance of an electric current restricted to the surface in the presence of an electric chemical potential. The integrated current is universal in the sense that it only depends on the topology of the phases showing that the bulk-boundary correspondence holds even at strong coupling. The implications of this result are subtle and may shed some light on anomalous transport at weak coupling.
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