Volume 93, Number 2, March 2011
|Number of page(s)||6|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||07 February 2011|
Shot noise in the Kondo regime of a quantum-dot–ferromagnet system irradiated with microwave fields
Key Laboratory of Cluster Science of Ministry of Education, and Department of Physics, Beijing Institute of Technology - Beijing 100081, PRC
Accepted: 6 January 2011
The shot noise of a quantum dot (QD) coupled to the ferromagnetic terminals under the perturbation of microwave fields (MWFs) in the Kondo regime has been derived by employing the nonequilibrium Green's function approach. The photon-assisted shot noise associated with the spin-polarized electron tunneling in the Kondo regime has been derived and calculated to reveal significant results for spintronics. The modification of shot noise induced by the polarization angle and spin-polarized linewidths exhibits clearly. The Fano factor displays the photon-assisted effect more efficiently for the circumstance of smaller linewidths. The shot noise is suppressed and enhanced by the MWFs, and it shows sub-Poissonian and super-Poissonian features.
PACS: 85.35.-p – Nanoelectronic devices / 73.23.-b – Electronic transport in mesoscopic systems / 73.21.La – Quantum dots
© EPLA, 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.