TY - JOUR
T1 - Lineshape of the thermopower of quantum dots
AU - Fahlvik Svensson, Sofia
AU - Persson, Ann
AU - Hoffmann, E. A.
AU - Nakpathomkun, N.
AU - Nilsson, Henrik
AU - Xu, Hongqi
AU - Samuelson, Lars
AU - Linke, Heiner
PY - 2012
Y1 - 2012
N2 - Quantum dots are an important model system for thermoelectric phenomena, and may be used to enhance the thermal-to-electric energy conversion efficiency in functional materials, by tuning the Fermi energy relative to the dots' transmission resonances. It is therefore important to obtain a detailed understanding of a quantum dot's thermopower as a function of the Fermi energy. However, so far it has proven difficult to take the effects of interactions into account in the interpretation of experimental data. In this paper, we present detailed measurements of the thermopower of quantum dots defined in heterostructure nanowires. We show that the thermopower lineshape is described well by a Landauer-type transport model that uses as its input experimental values of the dot conductance, which contains information about interaction effects.
AB - Quantum dots are an important model system for thermoelectric phenomena, and may be used to enhance the thermal-to-electric energy conversion efficiency in functional materials, by tuning the Fermi energy relative to the dots' transmission resonances. It is therefore important to obtain a detailed understanding of a quantum dot's thermopower as a function of the Fermi energy. However, so far it has proven difficult to take the effects of interactions into account in the interpretation of experimental data. In this paper, we present detailed measurements of the thermopower of quantum dots defined in heterostructure nanowires. We show that the thermopower lineshape is described well by a Landauer-type transport model that uses as its input experimental values of the dot conductance, which contains information about interaction effects.
U2 - 10.1088/1367-2630/14/3/033041
DO - 10.1088/1367-2630/14/3/033041
M3 - Article
SN - 1367-2630
VL - 14
JO - New Journal of Physics
JF - New Journal of Physics
ER -