RT Journal Article
T1 Single-electron thermal devices coupled to a mesoscopic gate
A1 Sánchez Rodrigo, Rafael
A1 Thierschmann, Holger
A1 Molenkamp, Laurens W.
AB We theoretically investigate the propagation of heat currents in a three-terminal quantum dot engine. Electron-electron interactions introduce state-dependent processes which can be resolved by energy-dependent tunneling rates. We identify the relevant transitions which define the operation of the system as a thermal transistor or a thermal diode. In the former case, thermal-induced charge fluctuations in the gate dot modify the thermal currents in the conductor with suppressed heat injection, resulting in huge amplification factors and the possible gating with arbitrarily low energy cost. In the latter case, enhanced correlations of the state-selective tunneling transitions redistribute heat flows giving high rectification coefficients and the unexpected cooling of one conductor terminal by heating the other one. We propose quantum dot arrays as a possible way to achieve the extreme tunneling asymmetries required for the different operations.
PB IOP Publishing Limited
SN 1367-2630
YR 2017
FD 2017-11-24
LK https://hdl.handle.net/10016/38513
UL https://hdl.handle.net/10016/38513
LA eng
NO We acknowledge financial support from the Spanish Ministerio de Economía y Competitividad via grants No. MAT2014-58241-P and No. FIS2015-74472-JIN (AEI/FEDER/UE), and the European Research Council Advanced Grant No. 339306 (METIQUM). We also thank the COST Action MP1209 'Thermodynamics in the quantum regime'.
DS e-Archivo
RD 3 jul. 2024