Zeeman energy and anomalous spin splitting in lateral GaAs quantum dots
Manuel Valin-Rodriguez, Antonio Puente, Llorens Serra
TL;DR
This paper investigates how horizontal magnetic fields affect energy levels and spin splitting in GaAs quantum dots with spin-orbit interaction, revealing features useful for measuring spin-orbit coupling strengths.
Contribution
It provides a theoretical analysis of Zeeman energy and spin splitting in lateral quantum dots, highlighting the influence of spin-orbit coupling and magnetic field orientation.
Findings
Zero-field energy gaps due to spin-orbit interaction
Dependence of energy splittings on magnetic field orientation
Potential method to measure Rashba and Dresselhaus spin-orbit strengths
Abstract
The level splittings induced by a horizontal magnetic field in a parabolic two-dimensional quantum dot with spin-orbit interaction are obtained. Characteristic features induced by the spin-orbit coupling are the appearance of zero-field gaps as well as energy splittings that depend on the electronic state and the orientation of the magnetic field in the quantum-dot plane. It is suggested that these quantum-dot properties could be used to determine the Rashba and Dresselhaus spin-orbit intensities
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