Shot noise spectroscopy of electronic spin flips in quantum dots
Journal article, 2007

Spin decoherence and spin flips crucially affect the tunneling transport of spin-polarized electrons through a quantum dot connected to magnetic leads. Here, the authors show that the low-frequency shot noise in such structures diverges as the spin relaxation rate for electrons on the dot goes to zero, reaching giant super-Poissonian values for realistic spin-flip rates. It is also shown that combined measurements of the average current and the shot noise as a function of bias voltage and external magnetic field offer a spectroscopic tool for studying electronic spin relaxation rates in this system.


Leonid Gorelik

Chalmers, Applied Physics, Condensed Matter Theory

Sergeij I. Kulinich

University of Gothenburg

Robert I. Shekhter

University of Gothenburg

Mats Jonson

University of Gothenburg

V. M. Vinokur

Argonne National Laboratory

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 90 19 192105 - 192105

Subject Categories

Physical Sciences



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