Geometrical spin dephasing in quantum dots
Pablo San-Jose, Gergely Zarand, Alexander Shnirman, Gerd Schön
Abstract
We study spin-orbit mediated relaxation and dephasing of electron spins in quantum dots. We show that higher order contributions provide a relaxation mechanism that dominates for low magnetic fields and is of geometrical origin. In the low-field limit relaxation is dominated by coupling to electron-hole excitations and possibly 1/f noise rather than phonons.
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