Zobrazeno 1 - 10
of 837
pro vyhledávání: '"Crişan, M."'
Publikováno v:
Physica E 2017
We study the electronic contribution to the main thermoelectric properties of a molecular junction consisting of a single quantum dot coupled to graphene external leads. The system electrical conductivity (G), Seebeck coefficient ($S$), and the therm
Externí odkaz:
http://arxiv.org/abs/1710.01433
Akademický článek
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Publikováno v:
Eur. Phys. J. B (2016) 89: 140
We calculate the nuclear spin-lattice relaxation time and the Knight shift for the case of gapped graphene systems. Our calculations consider both the massive and massless gap scenarios. Both the spin-lattice relaxation time and the Knight shift depe
Externí odkaz:
http://arxiv.org/abs/1607.01854
We investigate the thermoelectric properties of a T-shaped double quantum dot system described by a generalized Anderson Hamiltonian. The system's electrical conduction (G) and the fundamental thermoelectric parameters such as the Seebeck coefficient
Externí odkaz:
http://arxiv.org/abs/1412.0622
Publikováno v:
Physica E 43, 1887 (2011)
We developed a set of equations to calculate the electronic Green's functions in a T-shaped multi-quantum dot system using the equation of motion method. We model the system using a generalized Anderson Hamiltonian which accounts for {\em finite} int
Externí odkaz:
http://arxiv.org/abs/1108.4119
Publikováno v:
J. Phys. Cond. Matt., 21, 215604 (2009)
We consider the transport and the noise characteristics for the case of a T-shape double quantum dot system using the equation of motion method. Our theoretical results, obtained in an approximation equivalent to the Hartree-Fock approximation, accou
Externí odkaz:
http://arxiv.org/abs/0905.1938
We revisited the scaling behavior of the transport properties of a quantum dot system described by the spin-1/2 Anderson model using analytical methods. In the low temperature limit we show that the conductance has a universal behavior with universal
Externí odkaz:
http://arxiv.org/abs/0901.4422
We consider the two dimensional disordered Bose gas which present a metallic state at low temperatures. A simple model of an interacting Bose system in a random field is propose to consider the interaction effect on the transition in the metallic sta
Externí odkaz:
http://arxiv.org/abs/0811.2672
Autor:
Crisan, M., Grosu, I.
Publikováno v:
Physica E 41, 130, (2008)
We present a many-body calculation for the conductance of a conducting bridge of a simple hydrogen molecule between $Pt$ electrodes.The experimental results showed that the conductance $G=dI/dV$ has the maximum value near the quantum unit $G_{0}=2e^{
Externí odkaz:
http://arxiv.org/abs/0810.3120
Publikováno v:
Physica E 39, 214 (2007)
We analyze the zero temperature conductance of a parallel T-shaped double quantum dot system. We present an analytical expression for the conductance of the system in terms of the total number of electrons in both quantum dots. Our results confirm th
Externí odkaz:
http://arxiv.org/abs/0708.1842