TY  - JOUR
AU  - Andergassen, S.
AU  - Costi, T.A.
AU  - Zlatic, V.
TI  - Mechanism for large thermoelectric power in molecular quantum dots described by the negative-U Anderson model
JO  - Physical review / B
VL  - 84
IS  - 24
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-18530
SP  - 241107
PY  - 2011
N1  - We acknowledge supercomputer support by the John von Neumann Institute for Computing (Julich), discussions with C. Karrasch and V. Meden (S. A.), and support by NSF Grant DMR-1006605, Forschungszentrum Julich, and the Ministry of Science, Croatia (V.Z.).
AB  - We investigate, with the aid of numerical renormalization group techniques, the thermoelectric properties of a molecular quantum dot described by the negative-U Anderson model. We show that the charge Kondo effect provides a mechanism for enhanced thermoelectric power via a correlation-induced asymmetry in the spectral function close to the Fermi level. We show that this effect results in a dramatic enhancement of the Kondo-induced peak in the thermopower of negative-U systems with Seebeck coefficients exceeding 50 mu V/K over a wide range of gate voltages.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000298115800002
DO  - DOI:10.1103/PhysRevB.84.241107
UR  - https://juser.fz-juelich.de/record/18530
ER  -