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Large anisotropy of spin-orbit interaction in a single InAs self-assembled quantum dot

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arxiv 0912.3088 v1 pith:MJ5ZH7S7 submitted 2009-12-16 cond-mat.mes-hall

S. Takahashi , R.S. Deacon , K. Yoshida , A. Oiwa , K. Shibata , Y. Tokura , S. Tarucha This is my paper · ORCID
classification cond-mat.mes-hall
keywords energyrotationangularanisotropydependencefunctioninasinteraction
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Anisotropy of spin-orbit interaction (SOI) is studied for a single uncapped InAs self-assembled quantum dot (SAQD) holding just a few electrons. The SOI energy is evaluated from anti-crossing or SOI induced hybridization between the ground and excited states with opposite spins. The magnetic angular dependence of the SOI energy falls on an absolute cosine function for azimuthal rotation, and a cosine-like function for tilting rotation. The SOI energy is even quenched at a specific rotation. These angular dependence compare well to calculation of Rashba SOI in a two-dimensional harmonic potential.

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