TY - JOUR

T1 - Thermovoltage in quantum dots with attractive interaction

AU - Schulenborg, Jens

AU - Wegewijs, Maarten R.

AU - Splettstoesser, Janine

PY - 2020/6/15

Y1 - 2020/6/15

N2 - We study the linear and nonlinear thermovoltage of a quantum dot with effective attractive electron-electron interaction and weak, energy-dependent tunnel coupling to electronic contacts. Remarkably, we find that the thermovoltage shows signatures of repulsive interaction, which can be rationalized. These thermovoltage characteristics are robust against large potential and temperature differences well into the nonlinear regime, which we expect can be demonstrated in current state-of-the-art experiments. Furthermore, under nonlinear operation, we find extended regions of large power production at efficiencies on the order of the Curzon-Ahlborn bound interrupted only by a characteristic sharp dip.

AB - We study the linear and nonlinear thermovoltage of a quantum dot with effective attractive electron-electron interaction and weak, energy-dependent tunnel coupling to electronic contacts. Remarkably, we find that the thermovoltage shows signatures of repulsive interaction, which can be rationalized. These thermovoltage characteristics are robust against large potential and temperature differences well into the nonlinear regime, which we expect can be demonstrated in current state-of-the-art experiments. Furthermore, under nonlinear operation, we find extended regions of large power production at efficiencies on the order of the Curzon-Ahlborn bound interrupted only by a characteristic sharp dip.

KW - COULOMB-BLOCKADE OSCILLATIONS

KW - THERMOELECTRIC FIGURE

KW - THERMOPOWER

KW - ENERGY

U2 - 10.1063/5.0008866

DO - 10.1063/5.0008866

M3 - Journal article

VL - 116

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 24

M1 - 243103

ER -