Thermopower of a Quantum Dot in a Coherent Region

Abstract

Thermoelectric power due to coherent electron transmission through a quantum dot is theoretically studied. In addition to the known features related to resonant peaks, we show that a novel significant structure appears between the peaks. This structure arises from the so-called transmission zero, which is characteristic of coherent transmission through several quantum levels. Because of sensitivity to phase-breaking effect in quantum dots, this novel structure indicates degree of coherency in the electron transmission.

6 pages, 6 figures, submitted to J. Phys. Soc. Jpn

References in corpus (7)

• Modulation of Thermoelectric Power of Individual Carbon Nanotubes
• Thermo-Electric Properties of Quantum Point Contacts
• Cotunneling thermopower of single electron transistors
• Which phase is measured in the mesoscopic Aharonov-Bohm interferometer?
• Sequential and co-tunneling behavior in the temperature-dependent thermopower of few-electron quantum dots
• On the Mott formula for thermopower of non-interactions electrons in quantum point contacts
• Transmission through Quantum Dots: Focus on Phase Lapses

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• Local and non-local thermopowers in three-terminal nanostructures
• Relaxation dynamics of the electron distribution in the Coulomb blockade problem
• Suppressing phonon transport in nanowires: a simple model for phonon-surface roughness interaction
• Enhancing Thermoelectric Properties Through a Three-Terminal Benzene Molecule
• Thermopower signatures and spectroscopy of the canyon of conductance suppression