Phys. Rev. Lett. 97, 076803 (2006) [4 pages]Geometrical Spin Dephasing in Quantum DotsReceived 13 April 2006; published 16 August 2006 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. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.97.076803
DOI:
10.1103/PhysRevLett.97.076803
PACS:
73.21.La, 03.65.Vf, 03.65.Yz
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