Electrical spin injection and transport in Germanium

Details Electrical spin injection and transport in Germanium Electrical spin injection and transport in Germanium

2011-03-25

arxiv.org/abs/1103.5095v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We report the first experimental demonstration of electrical spin injection, transport and detection in bulk germanium (Ge). The non-local magnetoresistance in n-type Ge is observable up to 225K. Our results indicate that the spin relaxation rate in the n-type Ge is closely related to the momentum scattering rate, which is consistent with the predicted Elliot-Yafet spin relaxation mechanism for Ge. The bias dependence of the nonlocal magnetoresistance and the spin lifetime in n-type Ge is also investigated.

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