Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Cândido, Ladir"'
Starting from the shell structure in atoms and the significant correlation within electron pairs, we distinguish the exchange-correlation effects between two electrons of opposite spins occupying the same orbital from the average correlation among ma
Externí odkaz:
http://arxiv.org/abs/1802.06593
Autor:
Hai, Guo-Qiang, Cândido, Ladir
When atoms are organized into a crystal, the single-electron energy levels of individual atoms form energy bands. However, there also exist electron-pair states in atoms. We found previously that the counterpart of these electron-pair states of indiv
Externí odkaz:
http://arxiv.org/abs/1602.07484
Publikováno v:
In Chemical Physics Letters 16 September 2018 708:54-60
Publikováno v:
In Chemical Physics Letters January 2018 691:330-335
Autor:
da Cunha, J. A. R., Candido, Ladir
Publikováno v:
Physical Review B (brief reports) 71, 073403 (2005)
Using molecular dynamics (MD) simulation, we have calculated the melting temperature of two-dimensional electron systems on $ 240$\AA-$ 500$\AA helium films supported by substrates of dielectric constants $ \epsilon_{s}=2.2-11.9$ at areal densities $
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411333
Publikováno v:
Phys. Rev. B 70, 094413 (2004)
Using Path Integral Monte Carlo, we have calculated exchange frequencies as electrons undergo ring exchanges of 2, 3 and 4 electrons in a ``clean'' 3d Wigner crystal (bcc lattice) as a function of density. We find pair exchange dominates and estimate
Externí odkaz:
http://arxiv.org/abs/cond-mat/0403443
Publikováno v:
Phys. Rev. Lett. 86, 870-873 (2001)
Using Path Integral Monte Carlo we have calculated exchange frequencies as electrons undergo ring exchanges in a ``clean'' 2d Wigner crystal as a function of density. The results show agreement with WKB calculations at very low density, but show a mo
Externí odkaz:
http://arxiv.org/abs/cond-mat/0008062
Using the path-integral Monte Carlo method, we calculate the energy to form single and pair vacancies and interstitials in a two-dimensional Wigner crystal of electrons. We confirm that the lowest-lying energy defects of a 2D electron Wigner crystal
Externí odkaz:
http://arxiv.org/abs/cond-mat/0002366
Publikováno v:
In Chemical Physics Letters 25 November 2014 616-617:212-216
Publikováno v:
In Chemical Physics Letters 24 October 2013 586:108-110