Single Electron Spin Decoherence by Nuclear Spin Bath: Linked Cluster Expansion Approach

Details Single Electron Spin Decoherence by Nuclear Spin Bath: Linked Cluster Expansion Approach Single Electron Spin Decoherence by Nuclear Spin Bath: Linked Cluster Expansion Approach

2006-09-05

arxiv.org/abs/cond-mat/0609105v1

Phys. Rev. B 75, 125314 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

37 pages, 13 figures

Scientific paper

10.1103/PhysRevB.75.125314

We develop a theoretical model for transverse dynamics of a single electron spin interacting with a nuclear spin bath. The approach allows a simple diagrammatic representation and analytical expressions of different nuclear spin excitation processes contributing to electron spin decoherence and dynamical phase fluctuations. It accounts for nuclear spin dynamics beyond conventional pair correlation models. As an illustration of the theory, we evaluated the coherence dynamics of a P donor electron spin in a Si crystal.

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