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Giant super poissonian shot noise in spin-polarized SET structures

Leonid Y. Gorelik (Institutionen för teknisk fysik, Kondenserade materiens teori) ; Sergeij I. Kulinich ; Robert I. Shekhter ; Mats Jonson ; V. M. Vinokur
Low Temperature Physics Vol. 33 (2007), 9, p. 757-761.
[Artikel, refereegranskad vetenskaplig]

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. (c) 2007 American Institute of Physics.

Nyckelord: spintronics, shot noise, single electron tunneling



Denna post skapades 2007-12-26.
CPL Pubid: 63885

 

Institutioner (Chalmers)

Institutionen för teknisk fysik, Kondenserade materiens teori (1900-2015)
Institutionen för fysik (GU) (GU)

Ämnesområden

Mesoskopisk fysik

Chalmers infrastruktur