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Book Description
DANS CETTE THESE NOUS ETUDIONS LA TRANSITION DE PHASE LIEE AUX VORTEX PRESENTS DANS DES FILMS MINCES QUASI-MONOCRISTALLINS, D'ORIENTATIONS SELECTIONNEES, DU SUPRACONDUCTEUR A HAUTE TEMPERATURE CRITIQUE YBA 2CU 3O 7 (YBCO). LE PREMIER CHAPITRE APPORTE UNE BREVE INTRODUCTION AUX PHENOMENES DE DISSIPATION DANS CES MATERIAUX. DES TECHNIQUES DE FABRICATION ET DE CARACTERISATION D'ECHANTILLONS ONT ETE MISES AU POINT POUR CETTE ETUDE ET SONT EXPLICITEES DANS LES CHAPITRES 2 ET 3 RESPECTIVEMENT. EN PLUS DE FILMS D'ORIENTATION CLASSIQUE (001), NOUS AVONS ETUDIE DES FILMS ORIENTES (100) OU L'AXE C EST ALIGNE LE LONG D'UNE SEULE DIRECTION DANS LE PLAN DU SUBSTRAT, CE QUI A PERMIS D'ISOLER LES CARACTERISTIQUES ASSOCIEES AUX AXES B ET C. LES PROPRIETES STRUCTURALES, MORPHOLOGIQUES ET ELECTRIQUES DE CES DEUX TYPES DE FILM SONT DECRITES DANS LES CHAPITRES 4 ET 5. L'ALGORITHME DE SCALING ASSOCIE AU MODELE DE VERRE DE VORTEX (VORTEX GLASS) PROPOSE PAR FISHER ET AL A PERMIS D'EXTRAIRE DES PARAMETRES DECRIVANT UNE TRANSITION DE PHASE D'ORDRE ELEVE A PARTIR DE DONNEES ISSUES DE MESURES DE TRANSPORT TRES PRECISES. NOUS AVONS OBSERVE UNE EXCELLENTE SUPERPOSITION DES CARACTERISTIQUES I-V DE PART ET D'AUTRE DE LA TEMPERATURE DE TRANSITION DANS LA PLUPART DES ECHANTILLONS. CEPENDANT, LES IMPLICATIONS ISSUES DE NOS RESULTATS QUANTITATIFS SONT INACCEPTABLES. L'EXPOSANT DYNAMIQUE OBTENU Z N'EST PAS UNIVERSEL MAIS IL EST BEAUCOUP PLUS ELEVE QUE DANS DES SYSTEMES ANALOGUES COMME LES VERRES DE SPIN, CE QUI IMPLIQUE DES ECHELLES DE TEMPS CARACTERISTIQUES EXTREMEMENT LONGUES. DE MANIERE PLUS DRAMATIQUE, DANS LES FILMS (100), NOUS TROUVONS QUE LA TEMPERATURE DE TRANSITION DEPEND DE LA DIRECTION DE MESURE ! AU CHAPITRE 6, NOUS COMPARONS NOS RESULTATS AVEC CEUX OBTENUS DANS D'AUTRES FILMS YBCO D'ORIENTATIONS ANISOTROPES. LE CHAPITRE 7 EST RESERVE AUX CONCLUSIONS GENERALES TIREES DES DIFFERENTES ETUDES ET AUX PROLONGEMENTS ENVISAGES A CE TRAVAIL DE RECHERCHE EFFECTUE DANS LE CADRE D'UNE COTUTELLE ENTRE DEUX LABORATOIRES ANGLAIS ET FRANCAIS ASSOCIES AUX UNIVERSITES DE NOTTINGHAM ET DE GRENOBLE (UJF).
Book Description
DANS CETTE THESE NOUS ETUDIONS LA TRANSITION DE PHASE LIEE AUX VORTEX PRESENTS DANS DES FILMS MINCES QUASI-MONOCRISTALLINS, D'ORIENTATIONS SELECTIONNEES, DU SUPRACONDUCTEUR A HAUTE TEMPERATURE CRITIQUE YBA 2CU 3O 7 (YBCO). LE PREMIER CHAPITRE APPORTE UNE BREVE INTRODUCTION AUX PHENOMENES DE DISSIPATION DANS CES MATERIAUX. DES TECHNIQUES DE FABRICATION ET DE CARACTERISATION D'ECHANTILLONS ONT ETE MISES AU POINT POUR CETTE ETUDE ET SONT EXPLICITEES DANS LES CHAPITRES 2 ET 3 RESPECTIVEMENT. EN PLUS DE FILMS D'ORIENTATION CLASSIQUE (001), NOUS AVONS ETUDIE DES FILMS ORIENTES (100) OU L'AXE C EST ALIGNE LE LONG D'UNE SEULE DIRECTION DANS LE PLAN DU SUBSTRAT, CE QUI A PERMIS D'ISOLER LES CARACTERISTIQUES ASSOCIEES AUX AXES B ET C. LES PROPRIETES STRUCTURALES, MORPHOLOGIQUES ET ELECTRIQUES DE CES DEUX TYPES DE FILM SONT DECRITES DANS LES CHAPITRES 4 ET 5. L'ALGORITHME DE SCALING ASSOCIE AU MODELE DE VERRE DE VORTEX (VORTEX GLASS) PROPOSE PAR FISHER ET AL A PERMIS D'EXTRAIRE DES PARAMETRES DECRIVANT UNE TRANSITION DE PHASE D'ORDRE ELEVE A PARTIR DE DONNEES ISSUES DE MESURES DE TRANSPORT TRES PRECISES. NOUS AVONS OBSERVE UNE EXCELLENTE SUPERPOSITION DES CARACTERISTIQUES I-V DE PART ET D'AUTRE DE LA TEMPERATURE DE TRANSITION DANS LA PLUPART DES ECHANTILLONS. CEPENDANT, LES IMPLICATIONS ISSUES DE NOS RESULTATS QUANTITATIFS SONT INACCEPTABLES. L'EXPOSANT DYNAMIQUE OBTENU Z N'EST PAS UNIVERSEL MAIS IL EST BEAUCOUP PLUS ELEVE QUE DANS DES SYSTEMES ANALOGUES COMME LES VERRES DE SPIN, CE QUI IMPLIQUE DES ECHELLES DE TEMPS CARACTERISTIQUES EXTREMEMENT LONGUES. DE MANIERE PLUS DRAMATIQUE, DANS LES FILMS (100), NOUS TROUVONS QUE LA TEMPERATURE DE TRANSITION DEPEND DE LA DIRECTION DE MESURE ! AU CHAPITRE 6, NOUS COMPARONS NOS RESULTATS AVEC CEUX OBTENUS DANS D'AUTRES FILMS YBCO D'ORIENTATIONS ANISOTROPES. LE CHAPITRE 7 EST RESERVE AUX CONCLUSIONS GENERALES TIREES DES DIFFERENTES ETUDES ET AUX PROLONGEMENTS ENVISAGES A CE TRAVAIL DE RECHERCHE EFFECTUE DANS LE CADRE D'UNE COTUTELLE ENTRE DEUX LABORATOIRES ANGLAIS ET FRANCAIS ASSOCIES AUX UNIVERSITES DE NOTTINGHAM ET DE GRENOBLE (UJF).
Author: J. Robert Schrieffer Publisher: CRC Press ISBN: 0429964250 Category : Science Languages : en Pages : 352
Book Description
Theory of Superconductivity is primarily intended to serve as a background for reading the literature in which detailed applications of the microscopic theory of superconductivity are made to specific problems.
Author: National Research Council Publisher: National Academies Press ISBN: 0309163293 Category : Science Languages : en Pages : 157
Book Description
Geodesy is the science of accurately measuring and understanding three fundamental properties of Earth: its geometric shape, its orientation in space, and its gravity field, as well as the changes of these properties with time. Over the past half century, the United States, in cooperation with international partners, has led the development of geodetic techniques and instrumentation. Geodetic observing systems provide a significant benefit to society in a wide array of military, research, civil, and commercial areas, including sea level change monitoring, autonomous navigation, tighter low flying routes for strategic aircraft, precision agriculture, civil surveying, earthquake monitoring, forest structural mapping and biomass estimation, and improved floodplain mapping. Recognizing the growing reliance of a wide range of scientific and societal endeavors on infrastructure for precise geodesy, and recognizing geodetic infrastructure as a shared national resource, this book provides an independent assessment of the benefits provided by geodetic observations and networks, as well as a plan for the future development and support of the infrastructure needed to meet the demand for increasingly greater precision. Precise Geodetic Infrastructure makes a series of focused recommendations for upgrading and improving specific elements of the infrastructure, for enhancing the role of the United States in international geodetic services, for evaluating the requirements for a geodetic workforce for the coming decades, and for providing national coordination and advocacy for the various agencies and organizations that contribute to the geodetic infrastructure.
Author: S.L Lee Publisher: CRC Press ISBN: 9780750306300 Category : Science Languages : en Pages : 502
Book Description
Muon science is rapidly assuming a central role in scientific and technological studies of the solid state within the disciplines of physics, chemistry, and materials science. Muon Science: Muons in Physics, Chemistry and Materials presents key developments in both theoretical and experimental aspects of muon spin relaxation, rotation, and resonance. Assuming no prior expertise in muon science, the book guides readers from introductory material to the latest developments in the field. The internationally renowned expert contributors cover topics in muon instrumentation and muon science applications that include muon production, beamlines and instrumentation, muonium chemistry, muon catalyzed fusion, fundamental muon physics, ultra-cold muons, magnetism, superconductivity, diffusion, semiconductors, simulations, and data analysis. The book maintains consistent notation and nomenclature throughout as well as cross-referencing and continuity between the contributions. It provides an excellent introduction to both new and experienced muon beam scientists and graduate students wishing to develop their knowledge and understanding of the subject.
Author: Alain Yaouanc Publisher: Oxford University Press ISBN: 0199596476 Category : Science Languages : en Pages : 503
Book Description
Intended for graduate students and researchers who plan to use the muon spin rotation and relaxation techniques. A comprehensive discussion of the information extracted from measurements on magnetic and superconductor materials. The muonium centres as well as the muon and muonium diffusion in materials are discussed.
Author: N. Bontemps Publisher: Springer Science & Business Media ISBN: 9401109745 Category : Science Languages : en Pages : 330
Book Description
One of the most spectacular consequences of the description of the superfluid condensate in superfluid He or in superconductors as a single macroscopic quantum state is the quantization of circulation, resulting in quantized vortex lines. This book draws no distinction between superfluid He3 and He4 and superconductors. The reader will find the essential introductory chapters and the most recent theoretical and experimental progress in our understanding of the vortex state in both superconductors and superfluids, from lectures given by leading experts in the field, both experimentalists and theoreticians, who gathered in Cargèse for a NATO ASI. The peculiar features related to short coherence lengths, 2D geometry, high temperatures, disorder, and pinning are thoroughly discussed.
Author: Isabelle Huynen Publisher: MDPI ISBN: 3039362224 Category : Technology & Engineering Languages : en Pages : 92
Book Description
The microwave and millimeter wave frequency range is nowadays widely exploited in a large variety of fields including (wireless) communications, security, radar, spectroscopy, but also astronomy and biomedical, to name a few. This Special Issue focuses on the interaction between the nanoscale dimensions and centimeter to millimeter wavelengths. This interaction has been proven to be efficient for the design and fabrication of devices showing enhanced performance. Novel contributions are welcome in the field of devices based on nanoscaled geometries and materials. Applications cover, but not are limited to, electronics, sensors, signal processing, imaging and metrology, all exploiting nanoscale/nanotechnology at microwave and millimeter waves. Contributions can take the form of short communications, regular or review papers.
Author: Emil Roduner Publisher: Springer Science & Business Media ISBN: 364251720X Category : Science Languages : en Pages : 113
Book Description
The work presented here is a result of an extended collaboration with a number of coworkers and guests. Particularly, I would like to thank Dr. P. Burkhard and Dr. W. Strub for their careful work performed for their Ph. D. thesis and Dr. M. Heming for his brilliant ideas and his dedication. Very fruitful and stimulating were collaborations with our guests, i. e. with G. A. Brinkman and P. W. F. Louwrier from NIKHEF-K in Amsterdam, B. C. Webster, M. J. Ramos and D. McKenna from the University of Glasgow, M. C. R. Symons, D. Geeson and C. J. Rhodes from the University of Leicester, S. F. J. Cox and C. A. Scott from the Rutherford Appleton Laboratory in Chilton, and R. De Renzi and M. Ricco from the University of Parma. Many invaluable discussions with friends and competitors in the field helped to address new viewpoints and to define new goals. I shall not forget my teacher and director of the radical chemistry group, Prof. H. Fischer, whom I wish to thank for his interest and active support and for the great liberty he allowed me for the planning and organization of the project. Last but not least, I thank my dear wife Hanny and our children Christian, Martin and Andrea who suffered, without complaint, daddy's absence for so many hours.
Author: SYLVAIN.. MISAT
Author: SYLVAIN.. MISAT
Author: 
Author: J. Robert Schrieffer
Author: National Research Council
Author: S.L Lee
Author: Alain Yaouanc
Author: N. Bontemps
Author: Isabelle Huynen
Author: A. J. Dianoux
Author: Emil Roduner