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- Title
Berry phase and spin precession without magnetic fields in semiconductor quantum dots.
- Authors
Prabhakar, Sanjay; Melnik, Roderick
- Abstract
We investigate electric field control of spin manipulation through Berry phase in III-V semiconductor quantum dots. By utilizing degenerate and non-degenerate perturbation theories, we diagonalize the total Hamiltonian of a semiconductor quantum dot and express the solution of time dependent Schrödinger equation in terms of complete and incomplete elliptic integrals of the second kind, respectively. This allows us to investigate the interplay between the Rashba and Dresselhaus spin-orbit couplings. In particular, we provide theoretical descriptions of several novel properties focusing on spin manipulation through (a) Berry phase, (b) geometric phase and (c) spin echo phenomenon followed by a strong beating patterns during the adiabatic transport of the quantum dots.
- Subjects
GEOMETRIC quantum phases; DEGENERATE perturbation theory; MAGNETIC fields; MAGNETIC semiconductors; SPIN-orbit interactions; NON-degenerate perturbation theory; SEMICONDUCTOR quantum dots; QUANTUM dots
- Publication
European Physical Journal B: Condensed Matter, 2019, Vol 92, Issue 12, p1
- ISSN
1434-6028
- Publication type
Article
- DOI
10.1140/epjb/e2019-100268-3