Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Driss Khatib"'
Publikováno v:
Modern Physics Letters A. 37
In this paper, the features of quantum teleportation of a maximally entangled input thermal state using a system, consisting of two qubits (spin-1/2) anisotropic XY Heisenberg model with Herring–Flicker coupling in the presence of a magnetic field,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfdcfc5a3ffb2b217032d2cecd5d09af
https://doi.org/10.1142/s0217732322500389
https://doi.org/10.1142/s0217732322500389
Publikováno v:
Ferroelectrics. 372:16-21
Thermodynamic theory (Landau-Devonshire) of ferroelectric thin films undergoing first order phase transition is applied to calculate the influence of imperfection surface layer and film thickness on the critical temperatures namely superheating tsh a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89828362169359ff0f7622617c12007f
https://doi.org/10.1080/00150190802381605
https://doi.org/10.1080/00150190802381605
Publikováno v:
physica status solidi c. 3:3351-3354
The spontaneous polarization and the refractive indices in the tetragonal, orthorhombic and rhombohedral phases of KNbO3 are discussed quantitatively from the microscopic consideration. The shift of the Nb ion situated at the centre of the lattice is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afc2149ffc384231a2f993fe153f069f
https://doi.org/10.1002/pssc.200567122
https://doi.org/10.1002/pssc.200567122
Autor:
Ali Khalal, Driss Khatib
Publikováno v:
physica status solidi c. 3:3337-3340
A lattice dynamical formalism using the shell model (R. A. Cowley, Phys. Rev. 134, A981 (1964) [1]) is applied to ferroelectric crystal BaTiO3, in the tetragonal phase. This microscopic model includes the short-range interactions of axially symmetric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7a5e33c3097003c9a074d7851b024f7
https://doi.org/10.1002/pssc.200567052
https://doi.org/10.1002/pssc.200567052
Publikováno v:
physica status solidi c. 3:3332-3336
The phase transition in PbTiO3 is discussed quantitatively from the microscopic free energy based upon the mean field approximation, where the Ti ions shift is considered as the order parameter in the lattice having the spontaneous deformation. From
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce9da5c54a6bdb01bb4c5891127ae08a
https://doi.org/10.1002/pssc.200567049
https://doi.org/10.1002/pssc.200567049
Publikováno v:
Annales des Télécommunications. 59:1031-1044
Le but de cet article est d’analyser la stabilite spectrale d’un laser a retroaction repartie (dfb) a trois saut de phases (3ps-dfb) en utilisant le modele temporel (tdm). Nous avons developpe un programme capable de simuler les proprietes statiq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87a7a25afa0c876fe3d2948bb9cde6c4
https://doi.org/10.1007/bf03179709
https://doi.org/10.1007/bf03179709
Publikováno v:
Ferroelectrics. 273:161-166
A charge transport model including deep and shallow traps is used to calculate photorefractive properties of KNbO 3 :Fe as a function of many physical parameters (fringe spacing, intensity, applied electric field...). It is found that the application
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1abb65a00b3679f0c2956a9d46e70e5e
https://doi.org/10.1080/00150190211753
https://doi.org/10.1080/00150190211753
Publikováno v:
Comptes Rendus de l'Académie des Sciences - Series IV - Physics. 2:781-786
Resume La polarisation spontanee de BaTiO 3 est calculee dans les phases ferroelectriques a l'aide d'un modele microscopique tenant compte des interactions dipolaires dues au champ local agissant sur les ions de la maille elementaire. Dans ce modele,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0eb505bf34354c5069269bfcf599e06
https://doi.org/10.1016/s1296-2147(01)01187-8
https://doi.org/10.1016/s1296-2147(01)01187-8
Autor:
Lahsèn Lifsal, Driss Khatib
Publikováno v:
Comptes Rendus de l'Académie des Sciences - Series IV - Physics. 1:655-659
Resume La conductivite, la photoconductivite et l'absorption photoinduite dans les cristaux du niobate–tantalate de potassium dope au fer: KTa 0.52 Nb 0.48 O 3 (note KTN:Fe) sont etudiees a l'aide d'un modele de transport de charge dit “a trois e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86b9cde4a223fbd1c3530c1338d021f4
https://doi.org/10.1016/s1296-2147(00)00165-7
https://doi.org/10.1016/s1296-2147(00)00165-7
Publikováno v:
Phase Transitions. 71:13-37
The microscopic mechanism of the successive cubic-tetragonal-orthorhombic-rhombohedral phase transitions in KNbO3 is discussed quantitatively from the microscopic free energy based upon the mean field approximation where the Nb ions are displaced to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::623853e669c7eccac28fd13d7a85c6e6
https://doi.org/10.1080/01411590008228975
https://doi.org/10.1080/01411590008228975