Zobrazeno 1 - 10
of 40
pro vyhledávání: '"J. E. Alvarellos"'
Publikováno v:
Physical Review B. 103
The mechanisms underlying the melting process in bidimensional systems have been widely studied by means of experiments, theory, and simulations since Kosterlitz, Thouless, Halperin, Nelson, and Young elaborated the KTHNY theory. In the framework of
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https://explore.openaire.eu/search/publication?articleId=doi_________::1c63bb36fcb077858fb521408baeb874
https://doi.org/10.1103/physrevb.103.094107
https://doi.org/10.1103/physrevb.103.094107
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 theoretical framework based on an Ising-like extension of the 1D Frenkel-Ko
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05f103e1e4805e5c35850d2e0ec06024
We explore deformations of finite chains of noninteracting fermions at half-filling which give rise to large correlations between their extremes. After a detailed study of the Su-Schrieffer-Heeger model, the tradeoff curve between end-to-end correlat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6e436f967caa77ed1c5a3419dbd86c3
http://arxiv.org/abs/1809.06246
http://arxiv.org/abs/1809.06246
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 weak perturbations in this kind of system has been an important focus
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f79bb1f1ee8c5a7a5338b6b020d0be9e
http://arxiv.org/abs/1806.07766
http://arxiv.org/abs/1806.07766
This article introduces and discusses the concept of entanglement detachment. Under some circumstances, enlarging a few couplings of a Hamiltonian can effectively detach a (possibly disjoint) block within the ground state. This detachment is characte
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c677afb44d1ca2671b402f547e28efdc
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
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The production of spin-polarized currents in pristine carbon nanotubes with Rashba spin-orbit interactions has been shown to be very sensitive to the symmetry of the tubes and the geometry of the setup. Here we analyze the role of defects on the spin
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd44638f8c7201fd8cf63d3b97060c90
http://hdl.handle.net/10261/189139
http://hdl.handle.net/10261/189139
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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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-polarized electrical current that depends on the diameter of the tube
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44ff02d8de9f7ee347aac058a6203dbf
http://hdl.handle.net/10261/186812
http://hdl.handle.net/10261/186812
Autor:
J. E. Alvarellos, Jeil Jung
Publikováno v:
The Journal of Chemical Physics. 118:10825-10834
We present highly accurate configuration interaction results for two nonrelativistic electrons confined within a sphere and interacting via a Coulomb force. In such a system, the radius of the sphere R can be considered as a measure of the strenght o
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https://explore.openaire.eu/search/publication?articleId=doi_________::2390e2537a6c1407d369ee5c89f883d7
https://doi.org/10.1063/1.1574786
https://doi.org/10.1063/1.1574786
Publikováno v:
International Journal of Quantum Chemistry. 91:139-144
It is known that the exchange-correlation (XC) potential vXC obtained using the nonlocal weighted density approximation (WDA) does not yield the image behavior −1/4z outside a metal surface. This limitation might be due to the fact that the WDA is
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https://explore.openaire.eu/search/publication?articleId=doi_________::3c6096bc1d358275cd0d7a009acaf194
https://doi.org/10.1002/qua.10413
https://doi.org/10.1002/qua.10413
Publikováno v:
Physical Review B. 62:16063-16068
It is known that the exchange-correlation (XC) potential ${v}_{\mathrm{XC}}$ obtained by using the weighted density approximation (WDA) does not yield the correct image behavior $\ensuremath{-}1/4z$ outside a metal surface. Some authors have speculat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3a81bfbe25ddc2d78c7e5979b1d88ce
https://doi.org/10.1103/physrevb.62.16063
https://doi.org/10.1103/physrevb.62.16063