Thermopower of Aharonov-Bohm Interferometer with a Quantum Dot
Mesoscale and Nanoscale Physics
2009-11-07 v2 Strongly Correlated Electrons
Abstract
We report on the thermopower of an Aharonov-Bohm interferometer (AB) with a quantum dot in the Kondo limit. The thermopower is anomalously enhanced due to the Kondo effect as in heavy fermion systems. In contrast to the bulk systems, the sign of the thermopower can be changed by adjusting the energy level scheme or the particle-hole asymmetry of a dot with the gate voltage. Further the magnitude and even the sign of the thermopower in the AB ring can be changed at will with varying either magnetic fields or the gate voltages.
Keywords
Cite
@article{arxiv.cond-mat/0110261,
title = {Thermopower of Aharonov-Bohm Interferometer with a Quantum Dot},
author = {Tae-Suk Kim and S. Hershfield},
journal= {arXiv preprint arXiv:cond-mat/0110261},
year = {2009}
}
Comments
4 pages, 3 figures, accepted for publication in Physical Review Letters