59 citations · 133 across the 11 of their papers we have counts for
11 papers
Ergotropy and entanglement in critical spin chains
Begoña Mula, Eva M. Fernández, José E. Alvarellos +4
A subsystem of an entangled ground state is in a mixed state. Thus, if we isolate this subsystem from its surroundings we may be able to extract work applying unitary transformatio…
Nanowire reconstruction under external magnetic fields
Eva M. Fernández, Silvia N. Santalla, José Enrique Alvarellos +1
We consider the different structures that a magnetic nanowire adsorbed on a surface may adopt under the influence of external magnetic or electric fields. First, we propose a theor…
Entanglement detachment in fermionic systems
Hernán Santos, José Enrique Alvarellos, Javier Rodríguez-Laguna
This article introduces and discusses the concept of entanglement detachment. Under some circumstances, enlarging a few couplings of a Hamiltonian can effectively detach a (possibl…
Engineering large end-to-end correlations in finite fermionic chains
Hernán Santos, José E. Alvarellos, Javier Rodríguez-Laguna
We explore deformations of finite chains of independent fermions which give rise to large correlations between their extremes. After a detailed study of the Su-Schrieffer-Heeger (S…
Resonant behavior and unpredictability in forced chaotic scattering
Alexandre R. Nieto, Jesús M. Seoane, J. E. Alvarellos +1
Chaotic scattering in open Hamiltonian systems is a topic of fundamental interest in physics, which has been mainly studied in the purely conservative case. However, the effect of…
Defect-enhanced Rashba spin-polarized currents in carbon nanotubes
Hernán Santos, Leonor Chico, J. E. Alvarellos +1
The production of spin-polarized currents in pristine carbon nanotubes with Rashba spin-orbit interaction has been shown to be very sensitive to the symmetry of the tubes and the g…
All-electrical production of spin-polarized currents in carbon nanotubes: Rashba spin-orbit interaction
Hernán Santos, A. Latgé, J. E. Alvarellos +1
We study the effect of the Rashba spin-orbit interaction in the quantum transport of carbon nanotubes with arbitrary chiralities. For certain spin directions, we find a strong spin…
OEP calculations using Slater-type basis functions: atoms and diatomic molecules
J. J. Fernandez, J. E. Alvarellos, P. Garcia-Gonzalez +1
The exchange-only optimized effective potential method is implemented with the use of Slater-type basis functions, seeking for an alternative to the standard methods of solution wi…
Local Behavior of the First-Order Gradient Correction to the Thomas-Fermi Kinetic Energy Functional
David Garcia-Aldea, T. Martin-Blas, J. E. Alvarellos
The first order gradient correction to the Thomas-Fermi functional, proposed by Haq, Chattaraj and Deb (Chem. Phys. Lett. vol. 81, 8031, 1984) has been studied by evaluating both t…
Kinetic Energy Density Study of Some Representative Semilocal Kinetic Energy Functionals
David Garcia-Aldea, J. E. Alvarellos
There is a number of explicit kinetic energy density functionals for non-interacting electron systems that are obtained in terms of the electron density and its derivatives. These…
Assessment of density functional approximations: long-range correlations and self-interaction effects
J. Jung, P. García-González, J. E. Alvarellos +1
The complex nature of electron-electron correlations is made manifest in the very simple but non-trivial problem of two electrons confined within a sphere. The description of highl…