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- Title
Current noise generated by spin imbalance in presence of spin relaxation.
- Authors
Khrapai, V.; Nagaev, K.
- Abstract
We calculate current (shot) noise in a metallic diffusive conductor generated by spin imbalance in the absence of a net electric current. This situation is modeled in an idealized three-terminal setup with two biased ferromagnetic leads (F-leads) and one normal lead (N-lead). Parallel magnetization of the F-leads gives rise to spin-imbalance and finite shot noise at the N-lead. Finite spin relaxation results in an increase in the shot noise, which depends on the ratio of the length of the conductor ( L) and the spin relaxation length ( l ). For L >> l the shot noise increases by a factor of two and coincides with the case of the antiparallel magnetization of the F-leads.
- Subjects
CURRENT noise (Electricity); QUANTUM noise; NUCLEAR spin; RELAXATION (Nuclear physics); MAGNETIZATION; MATHEMATICAL models
- Publication
JETP Letters, 2017, Vol 105, Issue 1, p18
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364017010015