Spin Dephasing in the Extended Strong Collision Approximation

Details Spin Dephasing in the Extended Strong Collision Approximation Spin Dephasing in the Extended Strong Collision Approximation

2002-04-15

arxiv.org/abs/cond-mat/0204325v1

Physics

Condensed Matter

Statistical Mechanics

15 pages, 8 figures; submitted to PRE

Scientific paper

10.1103/PhysRevE.65.066123

For Markovian dynamics of field fluctuations we present here an extended strong collision approximation, thereby putting our previous strong collision approach (Phys. Rev. Lett. 83 (1999) 4215) into a systematic framework. Our new approach provides expressions for the free induction and spin echo magnetization decays that may be solved analytically or at least numerically. It is tested for the generic cases of dephasing due to an Anderson-Weiss process and due to restricted diffusion in a linear field gradient.

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