Thursd. seminar

[Cond.Matt. & Stat.Mech.Section]

SEMINAR on   Disorder and strong electron correlations



Thursday, 25 March      -  11:00 a.m.





Luigi Stasi Seminar Room,  Leonardo Building - first floor



Andreas KOMNIK     ( Universitaet Heidelberg )



"Charge and spin transfer statistics of  quantum impurity models"



Abstract



The full counting statistics (FCS) is a generalization of the  
conventional electronic transport characteristics such as the non- 
linear current-voltage relation or noise power. It is described by the  
probability of transferring a certain amount of electric charge during  
a fixed very long period of time.  It turns out to contain very  
sensitive information about the elementary charge of current carrying  
excitations as well as about the properties and nature of their mutual  
interactions.  We demonstrate the power of the FCS technique applying  
it to the problem of inter-edge tunneling in the QHE bars, to the  
electronic transport through the Kondo and Anderson impurities as well  
as for the conductance properties of the Anderson-Holstein model.  We  
discuss the results and address the existing experimental data.