Geometrical spin dephasing in quantum dots |
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| Authors: | San-Jose Pablo Zarand Gergely Shnirman Alexander Schön Gerd |
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| Institution: | Institut für Theoretische Festk?rperphysik and DFG-Center for Functional Nanostructures (CFN), Universit?t Karlsruhe, D-76128 Karlsruhe, Germany. |
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| 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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