https://doi.org/10.1140/epjb/s10051-022-00424-8
Regular Article - Solid State and Materials
Surface states and breaking down of spin-to-surface locking on a conical topological insulator quantum dot
Departamento de Física, Universidade Federal de Viçosa, 36570-900, Viçosa, MG, Brazil
Received:
19
July
2022
Accepted:
14
September
2022
Published online:
2
November
2022
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.
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