期刊
PHYSICAL REVIEW LETTERS
卷 97, 期 1, 页码 -出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.97.016602
关键词
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We calculate the charge transfer probability distribution function chi(lambda) for the Kondo dot in the strong-coupling limit within the framework of the Nozieres-Fermi-liquid theory of the Kondo effect. At zero temperature, the ratio of the moments C-n of the charge distribution to the backscattering current I-bs follows a universal law C-n/2I(bs)=(-1)(n)(1+2(n))/6. The functional form of chi(lambda) is consistent with tunneling of electrons and, possibly, electron pairs. We then discuss the crossover behavior of chi(lambda) from weak to strong Coulomb repulsion in the underlying Anderson impurity model and relate this to the existing results. Finally, we extend our analysis to the case of finite temperatures.
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