Giant shot noise due to mechanical transportation of spin-polarized electrons
Journal article, 2008

We show that single-electron "shuttling" of electrons in a magnetic nanoelectromechanical single-electron transistor device can be an efficient tool for studying electron spin-flip relaxation on quantum dots. The reason is traced to a spin blockade of the mechanically aided shuttle current that occurs in devices with highly polarized and collinearly magnetized leads. This results in giant peaks in the shot-noise spectral function, wherein the peak heights are only limited by the rate of electronic spin flips. Therefore, we show that nanomechanical spectroscopy of the spin-flip rate is possible, allowing spin-flip relaxation times as long as 10 mu s to be detected.


Leonid Gorelik

Chalmers, Applied Physics, Condensed Matter Theory

Sergeij I. Kulinich

Robert I. Shekhter

University of Gothenburg

Mats Jonson

University of Gothenburg

V. M. Vinokur

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 77 17 174304-

Subject Categories

Condensed Matter Physics



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