Zobrazeno 1 - 10
of 452
pro vyhledávání: '"CLARO, F."'
Publikováno v:
IJMPB 28 1450240 (2014)
We discuss the force and torque acting on spherical particles in an ensemble in the presence of a uniform AC electric field. We show that for a torque causing particle rotation to appear the particle must be absorptive. Our proof includes all electro
Externí odkaz:
http://arxiv.org/abs/1408.5408
We show that two tight binding electrons that repel may form a bounded pair in two dimensions. The paired states form a band with energies that scale like the strength of the interaction potential. By applying an electric field we show that the dynam
Externí odkaz:
http://arxiv.org/abs/1005.1857
Publikováno v:
Phys. Rev. A 77 (2008) 042504
In both molecular physics and condensed matter theory, deeper understanding of the correlation energy density epsilon_c (r) remains a high priority. By adopting Loewdin's definition of correlation energy as the difference between the exact and the Ha
Externí odkaz:
http://arxiv.org/abs/0803.2594
Autor:
Claro, F.
It is shown that systems described by Harper's equation exhibit a Dirac point at the center of the spectrum whenever the field parameter is a fraction of even denominator. The Dirac point is formed by the touching of two subbands, and the physics aro
Externí odkaz:
http://arxiv.org/abs/0708.3160
The electronic transport through a parallel double quantum-dot molecule attached asymmetrically to leads is studied under a magnetic field. We model the system by means of a non interacting two-impurity Anderson Hamiltonian. We find that the conducta
Externí odkaz:
http://arxiv.org/abs/cond-mat/0404293
Autor:
Weisz, J. F., Claro, F.
We study two correlated electrons in a nearest neighbour tight- binding chain, with both on site and nearest neighbour interaction. Both the cases of parallel and antiparallel spins are considered. In addition to the free electron band for two electr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0305185
Autor:
Orellana, P. A., Claro, F.
We present time-dependent results describing the current through a molecular device, modeled as a complex with two active centers connected to leads under bias. We show that, at a properly adjusted external voltage, a passing terahertz electromagneti
Externí odkaz:
http://arxiv.org/abs/cond-mat/0304090
Publikováno v:
Physical Review B 67, 193101 (2003)
The correlated motion of electrons in a one dimensional system with an externally applied longitudinal electric field is discussed. Within the tight binding model we show that in addition to the well known Bloch oscillations the electron-electron int
Externí odkaz:
http://arxiv.org/abs/cond-mat/0303595
We study the electronic transport through a double quantum dot molecule attached to leads, and examine the transition from a configuration in series to a symmetrical parallel geometry. We find that a progressive reduction of the tunneling through the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0302154
Publikováno v:
Phys. Rev. B 68, 115319 (2003)
We present a unified transport theory of hybrid structures, in which a confined normal state ($N$) sample is sandwiched between two leads each of which can be either a ferromagnet ($F$) or a superconductor ($S$) via tunnel barriers. By introducing a
Externí odkaz:
http://arxiv.org/abs/cond-mat/0301264