One-dimensional Dirac electrons on the surface of weak topological insulators
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
We show that a class of weak three-dimensional topological insulators feature one-dimensional Dirac electrons on their surfaces. Their hallmark is a linelike energy dispersion along certain directions of the surface Brillouin zone. These one-dimensional Dirac line degeneracies are topologically protected by a symmetry that we refer to as in-plane time-reversal invariance. We show how this invariance leads to Dirac lines in the surface spectrum of stacked Kane-Mele systems and more general models for weak three-dimensional topological insulators.
Details
Originalsprache | Englisch |
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Aufsatznummer | 085106 |
Fachzeitschrift | Physical Review B - Condensed Matter and Materials Physics |
Jahrgang | 91 |
Ausgabenummer | 8 |
Publikationsstatus | Veröffentlicht - 11 Feb. 2015 |
Peer-Review-Status | Ja |