Giant super-poissonian shot noise in spin-polarized SET structures

Автор(и)

  • L.Y. Gorelik Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
  • S.I. Kulinich Department of Physics, Göteborg University, SE-412 96 Göteborg, Sweden
  • R.I. Shekhter Department of Physics, Göteborg University, SE-412 96 Göteborg, Sweden
  • M. Jonson Department of Physics, Göteborg University, SE-412 96 Göteborg, Sweden
  • V.M. Vinokur Materials Science Division, Argonne National Laboratory, 9700 South Cass Av, Argonne, Illinois 60439, USA

DOI:

https://doi.org/10.1063/1.2780168

Ключові слова:

single-electron transistor, spin-flip time, shot-noise, Coulumb blockade, spin-polarized electrons.

Анотація

We study transport of spin-polarized electrons through a magnetic single-electron transistor (SET) in the presence of an external magnetic field. Assuming the SET to have a nanometer-sized central island with a single electron level, we find that the zero-frequency shot noise diverges as the on-dot spin-flip rate goes to zero, provided the source and drain leads are completely polarized in the same direction. We present an analytical expression for the low-frequency super-poissonian shot noise that allows one to specify the necessary conditions for the experimental observation of the phenomenon.

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Опубліковано

2007-08-10

Як цитувати

(1)
Gorelik, L.; Kulinich, S.; Shekhter, R.; Jonson, M.; Vinokur, V. Giant Super-Poissonian Shot Noise in Spin-Polarized SET Structures. Fiz. Nizk. Temp. 2007, 33, 997-1001.

Номер

Том 33 № 9 (2007)

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