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The calculations of the photoinduced nonlinear optical shift with respect to critical temperature for the MgB2 superconducting films (pure and doped by Cr) were performed using the first principle quantum chemical simulations. The principal role of the nano-interfaces between the MgB2 and Cr2O3 was established, and the nano-interfaces have a thickness varying within the 20-30 nm. The latter was done taking into account their long-range ordering additionally aligned by bicolour optical poling. The bicolour poling was performed by the fundamental 10.6 μm laser beam and its doubled frequency coherent second harmonic generation signal. The so formed internal dc-electric field has introduced additional polarization to the media which re-scale the factor of the electron-phonon interaction including the anharmionic one responsible for the occurrence of charge density non-centrosymmetry and the related second order nonlinear optical response. The simulations of the IR induced bicolour treatment were performed both for pure as well as MgB2 superconducting films doped by Cr3+.

Titel:	Role of MgB2/Cr2O3 nano-interfaces in photoinduced nonlinear optical treatment of the MgB2 superconducting films
Autor/in / Beteiligte Person:	ALZAYED, N. S ; KITYK, I. V ; OZGA, K ; FEDORCHUK, A. O ; SOLTAN, S ; SHAHABUDDIN, M ; EL-NAGGAR, A
Link:	View record from ScienceDirect (Volltext) View record from PASCAL Archive
Zeitschrift:	Physica. E, low-dimentional systems and nanostructures, Jg. 63 (2014), S. 180-185
Veröffentlichung:	Amsterdam: Elsevier, 2014
Medientyp:	academicJournal
Umfang:	print, 24 ref
ISSN:	1386-9477 (print)
Schlagwort:	Crystallography Cristallographie cristallogenèse Electronics Electronique Condensed state physics Physique de l'état condensé Sciences exactes et technologie Exact sciences and technology Physique Physics Etat condense: structure, proprietes mecaniques et thermiques Condensed matter: structure, mechanical and thermal properties Dynamique réticulaire Lattice dynamics Phonons et vibrations dans les réseaux cristallins Phonons and vibrations in crystal lattices Interactions phonon-électron et phonon-phonon Phonon-electron and phonon-phonon interactions Equations d'état, équilibres de phases et transformations de phases Equations of state, phase equilibria, and phase transitions Transformations de phases particulières Specific phase transitions Transitions dans les nanostructures et nanomatériaux Structural transitions in nanoscale materials Etat condense: structure electronique, proprietes electriques, magnetiques et optiques Condensed matter: electronic structure, electrical, magnetic, and optical properties Propriétés optiques, spectroscopie et autres interactions de la matière condensée avec les particules et le rayonnement Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Propriétés optiques des structures de basse dimensionnalité, mésoscopiques, des nanostructures et nanomatériaux Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures Addition chrome Chromium additions Chimie quantique Quantum chemistry Couche mince supraconductrice Superconducting thin films Couche supraconductrice Superconducting films Densité charge Charge density Dopage Doping Effet champ électrique Electric field effects Effet photoinduit Photoinduced effect Efecto fotoinducido Facteur échelle Scale factor Factor escala Faisceau laser Laser beams Génération harmonique 2 Second harmonic generation Interaction électron phonon Electron-phonon interactions Interface Interfaces Optique non linéaire Nonlinear optics Ordre 2 Second order Orden 2 Propriété optique Optical properties Relation ordre Ordering Relación orden Simulation numérique Digital simulation Température critique Critical temperature Transformation ordre désordre Order-disorder transformations 6320K 6470N Cr2O3 MgB2 Photoinduced effects in nanointerfaces Superconducting nano-films Time: 7867
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: Physics and Astronomy Department. College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia ; Czestochowa University of Technology. Armii Krajowej 17, 42-200 Czestochowa, Poland ; Lviv National University of Veterinary Medicine and Biotechnologies, Department of Inorganic and Organic Chemistry, 79010 Lviv, Ukraine ; Max Plank Institute for Solid State Research, Heisenberg Str. 1, 70569 Stuttgart, Germany ; Physics Department, Helwan University, 11792 Cairo, Egypt ; Physics Deparment, Faculty of Science, Ain Shams University, Abassia, Cairo 11566, Egypt Rights: Copyright 2015 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Physics of condensed state: electronic structure, electrical, magnetic and optical properties ; Physics of condensed state: structure, mechanical and thermal properties

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Role of MgB2/Cr2O3 nano-interfaces in photoinduced nonlinear optical treatment of the MgB2 superconducting films