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3.2k citations

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cond-mat.mes-hall2021★ 1 cited

Spectrum of localized states in fermionic chains with defect and adiabatic charge pumping

Filiberto Ares, José G. Esteve, Fernando Falceto

In this paper, we study the localized states of a generic quadratic fermionic chain with finite-range couplings and an inhomogeneity in the hopping (defect) that breaks translation…

cond-mat.mes-hall2020★ 15 cited

Experimental evidence of spin-orbit torque from metallic interfaces

A. Anadón, R. Guerrero, J. A. Jover-Galtier +6

Spin currents can modify the magnetic state of ferromagnetic ultrathin films through spin-orbit torque. They may be generated by means of spin-orbit interaction by either bulk or i…

cond-mat.mes-hall2015★ 5 cited

Shaped electric fields for fast optimal manipulation of electron spin and position in a double quantum dot

J. A. Budagosky, D. V. Khomitsky, E. Ya. Sherman +1

We use quantum optimal control theory algorithms to design external electric fields that drive the coupled spin and orbital dynamics of an electron in a double quantum dot, subject…

cond-mat.mes-hall2013★ 11 cited

Statistical measures and the Klein tunneling in single-layer graphene

Jaime Sanudo, Ricardo Lopez-Ruiz

Statistical complexity and Fisher-Shannon information are calculated in a problem of quantum scattering, namely the Klein tunneling across a potential barrier in graphene. The trea…

cond-mat.mes-hall2012★ 18 cited

Conductance of 1D quantum wires with anomalous electron-wavefunction localization

Ilias Amanatidis, Ioannis Kleftogiannis, Fernando Falceto +1

We study the statistics of the conductance through one-dimensional disordered systems where electron wavefunctions decay spatially as for , …

cond-mat.mes-hall2009★ 1 cited

Quantum Scattering and Transport in Classically Chaotic Cavities: An Overview of Past and New Results

Pier A. Mello, Victor A. Gopar, J. A. Mendez-Bermudez

We develop a statistical theory that describes quantum-mechanical scattering of a particle by a cavity when the geometry is such that the classical dynamics is chaotic. This pictur…

cond-mat.mes-hall2008★ 3 cited

Statistical analysis of the transmission based on the DMPK equation: An application to Pb nano-contacts

Victor A. Gopar

The density of the transmission eigenvalues of Pb nano-contacts has been estimated recently in mechanically controllable break-junction experiments. Motivated by these experimental…

cond-mat.mes-hall2006★ 87 cited

Heat production and energy balance in nanoengines driven by time-dependent fields

Liliana Arrachea, Michael Moskalets, Luis Martin-Moreno

We present a formalism to study the heat transport and the power developed by the local driving fields on a quantum system coupled to macroscopic reservoirs. We show that, quite ge…

cond-mat.mes-hall2006★ 10 cited

Optimization of soliton ratchets in inhomogeneous sine-Gordon systems

F. G. Mertens, L. Morales-Molina, A. R. Bishop +2

Unidirectional motion of solitons can take place, although the applied force has zero average in time, when the spatial symmetry is broken by introducing a potential , which…

cond-mat.mes-hall2005★ 19 cited

Transport in chaotic quantum dots: effects of spatial symmetries which interchange the leads

Victor A. Gopar, Stefan Rotter, Henning Schomerus

We investigate the effect of spatial symmetries on phase coherent electronic transport through chaotic quantum dots. For systems which have a spatial symmetry that interchanges the…

cond-mat.mes-hall2005★ 21 cited

Statistical study of the conductance and shot noise in open quantum-chaotic cavities: Contribution from whispering gallery modes

Evgeny N. Bulgakov, Victor A. Gopar, Pier A. Mello +1

In the past, a maximum-entropy model was introduced and applied to the study of statistical scattering by chaotic cavities, when short paths may play an important role in the scatt…

cond-mat.mes-hall2005★ 31 cited

Symmetry and environment effects on rectification mechanisms in quantum pumps

Liliana Arrachea

We consider a paradigmatic model of quantum pumps and discuss its rectification properties in the framework of a symmetry analysis proposed for ratchet systems. We discuss the role…

cond-mat.mes-hall2005★ 39 cited

Quantum Monte Carlo method for models of molecular nanodevices

Liliana Arrachea, Marcelo J. Rozenberg

We introduce a quantum Monte Carlo technique to calculate exactly at finite temperatures the Green function of a fermionic quantum impurity coupled to a bosonic field. While the al…

cond-mat.mes-hall2005★ 124 cited

A Green-function approach to transport phenomena in quantum pumps

Liliana Arrachea

We present a general treatment to study transport phenomena in systems described by tight-binding Hamiltonians coupled to reservoirs and with one or more time-periodic potentials.…

cond-mat.mes-hall2004★ 25 cited

Ratchet behavior in nonlinear Klein-Gordon systems with point-like inhomogeneities

Luis Morales-Molina, Franz G. Mertens, Angel Sanchez

We investigate the ratchet dynamics of nonlinear Klein-Gordon kinks in a periodic, asymmetric lattice of point-like inhomogeneities. We explain the underlying rectification mechani…