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Journal articles
Imaging spin diffusion in germanium at room temperature
Abstract : We report on the nonlocal detection of optically oriented spins in lightly n-doped germanium at room temperature. Localized spin generation is achieved by scanning a circularly polarized laser beam (λ = 1550 nm) on an array of lithographically defined Pt microstructures. The in-plane oriented spin generated at the edges of such microstructures, placed at different distances from a spin-detection element, allows for a direct imaging of spin diffusion in the semiconductor, leading to a measured spin diffusion length of about 10 μm. Two different spin-detection blocks are employed, consisting of either a magnetic tunnel junction or a platinum stripe where the spin current is converted in an electrical signal by the inverse spin-Hall effect. The second solution represents the realization of a nonlocal spin-injection/detection scheme that is completely free from ferromagnetic functional blocks.
https://hal-cea.archives-ouvertes.fr/cea-01963806
Contributor : Alain Marty <>
Submitted on : Friday, December 21, 2018 - 3:40:01 PM
Last modification on : Wednesday, February 17, 2021 - 3:26:07 PM
Contributor : Alain Marty <>
Submitted on : Friday, December 21, 2018 - 3:40:01 PM
Last modification on : Wednesday, February 17, 2021 - 3:26:07 PM
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