+ Site Statistics

+ Search Articles

+ Subscribe to Site Feeds

Most Shared

PDF Full Text

+ PDF Full Text

Request PDF Full Text

+ Follow Us

Follow on Facebook

Follow on Twitter

Follow on LinkedIn

+ Translate

+ Recently Requested

Kondo correlations and the Fano effect in closed Aharonov-Bohm interferometers

Hofstetter, W.; König, J.; Schoeller, H.

Physical Review Letters 87(15): 156803

2001

We study the Fano-Kondo effect in a closed Aharonov-Bohm (AB) interferometer which contains a single-level quantum dot and predict a frequency doubling of the AB oscillations as a signature of Kondo-correlated states. Using the Keldysh formalism, the Friedel sum rule, and the numerical renormalization group, we calculate the exact zero-temperature linear conductance G as a function of the AB phase phi and level position epsilon. In the unitary limit, G(phi) reaches its maximum 2e(2)/h at phi = pi/2. We find a Fano-suppressed Kondo plateau for G(epsilon) similar to recent experiments.

Related references