Shot noise spectroscopy of electronic spin flips in quantum dots
Artikel i vetenskaplig tidskrift, 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.

Författare

Leonid Gorelik

Chalmers, Teknisk fysik, Kondenserade materiens teori

Sergeij I. Kulinich

Göteborgs universitet

Robert I. Shekhter

Göteborgs universitet

Mats Jonson

Göteborgs universitet

V. M. Vinokur

Argonne National Laboratory

Applied Physics Letters

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

Vol. 90 192105 -

Ämneskategorier

Fysik

DOI

10.1063/1.2737421