Shot Noise in a Spin-Diode Geometry
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
---|---|
Data(s) |
20/10/2012
20/10/2012
2010
|
Resumo |
We apply the master equation technique to calculate shot noise in a system composed of single level quantum dot attached to a normal metal lead and to a ferromagnetic lead (NM-QD-FM). It is known that this system operates as a spin-diode, giving unpolarized currents for forward bias and polarized current for reverse bias. This effect is observed when only one electron can tunnel at a time through the dot, due to the strong intradot Coulomb interaction. We find that the shot noise also presents a signature of this spin-diode effect, with a super-Poissonian shot noise for forward and a sub-Poissonian shot noise for reverse bias voltages. The shot noise thus can provide further experimental evidence of the spin-rectification in the NM-QD-FM geometry. |
Identificador |
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, v.23, n.1, Special Issue, p.45-48, 2010 1557-1939 http://producao.usp.br/handle/BDPI/29903 10.1007/s10948-009-0550-1 |
Idioma(s) |
eng |
Publicador |
SPRINGER |
Relação |
Journal of Superconductivity and Novel Magnetism |
Direitos |
restrictedAccess Copyright SPRINGER |
Palavras-Chave | #Spintronics #Shot noise #Quantum dot #Physics, Applied #Physics, Condensed Matter |
Tipo |
article proceedings paper publishedVersion |