TY - JOUR
T1 - Two-impurity Anderson model revisited
T2 - Competition between Kondo effect and reservoir-mediated superexchange in double quantum dots
AU - Lee, Minchul
AU - Choi, Mahn Soo
AU - López, Rosa
AU - Aguado, Ramón
AU - Martinek, Jan
AU - Žitko, Rok
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010/3/29
Y1 - 2010/3/29
N2 - We study a series-coupled double quantum dot in the Kondo regime modeled by the two-impurity Anderson model and find a conduction-band-mediated superexchange interaction that competes with Kondo physics in the strong Coulomb interaction limit. Our numerical renormalization-group results complemented with the higher-order Rayleigh-Schrödinger perturbation theory show that the exchange mechanism leads to clear experimental consequences that can be checked in transport measurements through double quantum dots.
AB - We study a series-coupled double quantum dot in the Kondo regime modeled by the two-impurity Anderson model and find a conduction-band-mediated superexchange interaction that competes with Kondo physics in the strong Coulomb interaction limit. Our numerical renormalization-group results complemented with the higher-order Rayleigh-Schrödinger perturbation theory show that the exchange mechanism leads to clear experimental consequences that can be checked in transport measurements through double quantum dots.
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U2 - 10.1103/PhysRevB.81.121311
DO - 10.1103/PhysRevB.81.121311
M3 - Article
AN - SCOPUS:77955164078
SN - 1098-0121
VL - 81
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 12
M1 - 121311
ER -