Phys. Rev. Lett. 67, 3720–3723 (1991)Probing the Kondo resonance by resonant tunneling through an Anderson impurityReceived 9 September 1991; published in the issue dated 23 December 1991 We compute the current as a function of voltage for resonant tunneling through an Anderson impurity in the low-temperature, Kondo, regime. The differential conductance curve has the same structure as the zero-bias spectral function, but is sharper because a finite voltage tends to destroy the Kondo resonance. This destruction of the Kondo resonance cannot be mapped onto an increase in the effective temperature at the impurity site. The calculation is performed in the symmetric Anderson model using perturbation theory in the Hubbard U repulsion. © 1991 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.67.3720
DOI:
10.1103/PhysRevLett.67.3720
PACS:
72.15.Qm, 73.40.Gk
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