TY - JOUR
T1 - Nonequilibrium critical behavior for electron tunneling through quantum dots in an Aharonov-Bohm circuit
AU - Sela, Eran
AU - Affleck, Ian
PY - 2009/3/3
Y1 - 2009/3/3
N2 - Double quantum dots can provide an experimental realization of the two-impurity Kondo model which exhibits a non-Fermi-liquid quantum critical point (QCP) at a special value of its parameters. We generalize our recent study of double quantum dots in series to a parallel configuration with an Aharonov-Bohm flux. We present an exact universal result for the finite temperature and finite voltage conductance G [V,T] along the crossover from the QCP to the low energy Fermi-liquid phase. Compared to the series configuration, here generically G [V,T] G [-V,T], leading to current rectification.
AB - Double quantum dots can provide an experimental realization of the two-impurity Kondo model which exhibits a non-Fermi-liquid quantum critical point (QCP) at a special value of its parameters. We generalize our recent study of double quantum dots in series to a parallel configuration with an Aharonov-Bohm flux. We present an exact universal result for the finite temperature and finite voltage conductance G [V,T] along the crossover from the QCP to the low energy Fermi-liquid phase. Compared to the series configuration, here generically G [V,T] G [-V,T], leading to current rectification.
UR - http://www.scopus.com/inward/record.url?scp=63249136159&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.79.125110
DO - 10.1103/PhysRevB.79.125110
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AN - SCOPUS:63249136159
SN - 1098-0121
VL - 79
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 12
M1 - 125110
ER -