Relaxation of Shallow Donor Electron Spin due to Interaction with Nuclear Spin Bath

Details Relaxation of Shallow Donor Electron Spin due to Interaction with Nuclear Spin Bath Relaxation of Shallow Donor Electron Spin due to Interaction with Nuclear Spin Bath

2002-03-18

arxiv.org/abs/cond-mat/0203362v1

Nano Letters 2 (2002) 651-655

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages in PDF

Scientific paper

10.1021/nl0255552

We study the low-temperature dynamics of a shallow donor, e.g., $^{31}$P, impurity electron spin in silicon, interacting with the bath of nuclear spins of the $^{29}$Si isotope. For small applied magnetic fields, the electron spin relaxation is controlled by the steady state distribution of the nuclear spins. We calculate the relaxation times $T_1$ and $T_2$ as functions of the external magnetic field, and conclude that nuclear spins play an important role in the donor electron spin decoherence in Si:P at low magnetic fields.

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