Surface states and breaking down of spin-to-surface locking on a conical topological insulator quantum dot

L. G. Veiga () and W. A. Moura-Melo ()
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L. G. Veiga: Universidade Federal de Viçosa
W. A. Moura-Melo: Universidade Federal de Viçosa

The European Physical Journal B: Condensed Matter and Complex Systems, 2022, vol. 95, issue 11, 1-7

Abstract: Abstract We study a conical topological insulator quantum dot and we show how the cone tip affects the surface states energy spectrum. This is obtained by analytically solving the Dirac equation for these charge carries whose dynamics is restricted to the conical surface. Besides of changing the wave-functions and energy spectrum, the conical tip also yields breakdown of spin-to-surface locking in this geometry. Graphic abstract

Date: 2022
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DOI: 10.1140/epjb/s10051-022-00424-8

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