Journal
PHYSICAL REVIEW B
Volume 86, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.86.085202
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Funding
- AFOSR [FA9550-09-1-0493]
- NSF [ECCS-0824075]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0824075] Funding Source: National Science Foundation
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We investigate the intrinsic spin relaxation of conduction electrons in germanium due to electron-phonon scattering. We derive intravalley and intervalley spin-flip matrix elements for a general spin orientation and quantify the resulting anisotropy in spin relaxation. The form of the intravalley spin-flip matrix element is derived from the eigenstates of a compact spin-dependent k.p Hamiltonian in the vicinity of the L point (where thermal electrons are populated in Ge). Spin lifetimes from analytical integrations of the intravalley and intervalley matrix elements show excellent agreement with independent results from elaborate numerical methods.
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