Reference : Full counting statistics of spin transfer through ultrasmall quantum dots
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/20258
Full counting statistics of spin transfer through ultrasmall quantum dots
English
Schmidt, Thomas mailto [University of Freiburg > Physikalisches Institut]
Komnik, A. [> >]
Gogolin, A. O. [> >]
2007
Phys. Rev. B
76
241307(R)
Yes
[en] 73.63.Nm ; 72.10.Fk ; 72.25.Mk ; 73.23.-b
[en] We analyze the spin-resolved full counting statistics of electron transfer through an ultrasmall quantum dot coupled to metallic electrodes. Modeling the setup by the Anderson Hamiltonian, we explicitly take into account the on-site Coulomb repulsion U. We calculate the cumulant generating function for the probability to transfer a certain number of electrons with a preselected spin orientation during a fixed time interval. With the cumulant generating function at hand, we are then able to calculate the spin current correlations, which are of utmost importance in the emerging field of spintronics. We confirm the existing results for the charge statistics and report the discovery of a different type of correlation between the spin-up and -down polarized electron flows, which has the potential to become a powerful instrument for the investigation of the Kondo effect in nanostructures.
http://hdl.handle.net/10993/20258
10.1103/PhysRevB.76.241307
http://link.aps.org/abstract/PRB/v76/e241307

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Limited access
schmidt07_4.pdfPublisher postprint86.53 kBRequest a copy

Bookmark and Share SFX Query

All documents in ORBilu are protected by a user license.