The Density of Surface States in Weyl Semimetals

The Density of Surface States in Weyl Semimetals

Weyl semimetal is a three-dimensional material with a conical spectrum near an even number of point nodes, where two bands touch each other. Here we study spectral properties of surface electron states in such a system. We show that the density of surface states possesses a logarithmic singularity f...

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Veröffentlicht in:arXiv.org 2014-06
Hauptverfasser: Protogenov, Alexander P, Verbus, Valery A, Chulkov, Evgueni V
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Density
Electron states
Metalloids
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description Weyl semimetal is a three-dimensional material with a conical spectrum near an even number of point nodes, where two bands touch each other. Here we study spectral properties of surface electron states in such a system. We show that the density of surface states possesses a logarithmic singularity for the energy \(\varepsilon \to 0\). It decreases linearly at the intermediate energy of surface electron states and approaches zero as \(\sqrt{1-\varepsilon}\) for \(\varepsilon \to 1\). This universal behavior is a hallmark of the topological order that offers a new wide range of applications.
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subjects Density
Electron states
Metalloids
title The Density of Surface States in Weyl Semimetals
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