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 Quantum theory of spectral diffusion induced electron spin decoherence


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A quantum cluster expansion method is developed for the problem of localized electron spin decoherence due to dipolar fluctuations of lattice nuclear spins. At the lowest order it provides a microscopic explanation for the Lorentzian diffusion of Hahn echoes without resorting to any phenomenological Markovian assumption. Our numerical results show remarkable agreement with recent electron spin echo experiments in phosphorus doped silicon.



Autor: W. M. Witzel; Rogerio de Sousa; S. Das Sarma

Fuente: https://archive.org/







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