|
Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2012, Volume 96, Issue 11, Pages 804–808
(Mi jetpl3299)
|
|
|
|
This article is cited in 6 scientific papers (total in 6 papers)
CONDENSED MATTER
Temperature dependence of conductance and thermopower anomalies of quantum point contacts
O. A. Tkachenko, V. A. Tkachenko A. V. Rzhanov Institute of Semiconductor Physics of SB RAS, Novosibirsk
Abstract:
It has been shown within the Landauer approach that the presence of the $0.7$ anomaly in the conductance of a ballistic microcontact and the respective plateau in the thermopower implies pinning of the potential barrier height at a depth of k B T below the Fermi level. A simple way of taking into account the effect of electron-electron interaction on the profile and temperature dependence of a smooth one-dimensional potential barrier in the lower subband of the microcontact has been proposed. The calculated temperature dependences of the conductance and Seebeck coefficient agree with the experimental gate-voltage dependences, including the emergence of anomalous plateaus with an increase in temperature.
Received: 11.09.2012 Revised: 29.10.2012
Citation:
O. A. Tkachenko, V. A. Tkachenko, “Temperature dependence of conductance and thermopower anomalies of quantum point contacts”, Pis'ma v Zh. Èksper. Teoret. Fiz., 96:11 (2012), 804–808; JETP Letters, 96:11 (2012), 719–723
Linking options:
https://www.mathnet.ru/eng/jetpl3299 https://www.mathnet.ru/eng/jetpl/v96/i11/p804
|
Statistics & downloads: |
Abstract page: | 281 | Full-text PDF : | 63 | References: | 52 | First page: | 5 |
|