TY - JOUR
T1 - Decoherence of the Kondo Singlet Caused by Fano Resonance
AU - Chen , Ming-Lun
AU - Chen , Zhi-Quan
JO - Journal of Atomic and Molecular Sciences
VL - 2
SP - 156
EP - 162
PY - 2014
DA - 2014/05
SN - 5
DO - http://doi.org/10.4208/jams.100913.122713a
UR - https://global-sci.org/intro/article_detail/jams/8320.html
KW - cluster expansions, Kondo singlet, Fano resonance, Lacroix's truncation approximation.
AB - <p style="text-align: justify;">We investigate the structure of an Aharonov-Bohm interferometer with a
quantum dot coupling to left and right electrodes. By employing cluster expansions,
the equations of motion of Green&#39;s functions are transformed into the corresponding
equation of motion of connected Green&#39;s functions, which provides a truncation
scheme. With this method under the Lacroix&#39;s truncation approximation, we show
that Fano resonance causes a decoherence of the Kondo singlet.</p>