Nuclear Magnetic Resonance Studies of the High Temperature Superconductors in the Normal and Superconducting States PDF Download
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Author: Nicholas James Curro
Publisher:
ISBN:
Category :
Languages : en
Pages : 418
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Author: Nicholas James Curro
Publisher:
ISBN:
Category :
Languages : en
Pages : 418
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Author: Krzysztof R. Górny
Publisher:
ISBN:
Category :
Languages : en
Pages : 450
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Author: Christopher Nicholas Coretsopoulos
Publisher:
ISBN:
Category :
Languages : en
Pages : 250
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This study presents $\sp{17}$O NMR spectra of randomly and magnetically oriented samples of various high-$T\sb{c}$ superconductors. Systems under investigation include: (BaK)BiO$\sb3$, La$\sb{1.85}$Sr$\sb{0.15}$CuO$\sb4$, YBa$\sb2$Cu$\sb3$O$\sb{\rm 7-x}$, Bi$\sb2$Sr$\sb2$CaCu$\sb2$O$\sb8$ and Tl$\sb2$Ba$\sb2$CaCu$\sb2$O$\sb8$. Measurements of the angular dependence of the oxygen frequency shifts and corresponding satellite transitions have enabled us to assign the oxygen sites of magnetically oriented YBa$\sb2$Cu$\sb3$O$\sb{\rm 7-x}$, as well as determine the e.f.g. parameters for various sites. The temperature and angular dependence of the oxygen frequency shifts and relaxation rates have been studied as well as the effect of the oxygen stoichiometry and rare earth substitutions. Finally, we have compared the $\sp{17}$O frequency shifts of YBa$\sb2$Cu$\sb3$O$\sb{\rm 7-x}$ to those of the precursor oxides, and other high-$T\sb{c}$ compounds, and have consistently observed a paramagnetically shifted feature associated with the CuO$\sb2$ planes ($\sim$2000 ppm from H$\sb2$O) and a second feature or set of features in the diamagnetic region (typically at $\sim$400 ppm from H$\sb2$O) which are attributed to sites other than the CuO$\sb2$ planes. Precursor effects in the normal phase of YBa$\sb2$Cu$\sb3$O$\sb{\rm 7-x}$ are investigated, pointing strongly to antiferromagnetic fluctuations which may persist in the superconductive phase.
Author: Henry Nathaniel Bachman
Publisher:
ISBN:
Category :
Languages : en
Pages :
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This dissertation reports on nuclear magnetic resonance (NMR) experiments of high temperature superconductors (HTS) in the presence of high magnetic fields ranging from 2.1 T up to 27.3 T.
Author: Craig Thomas Milling
Publisher:
ISBN:
Category :
Languages : en
Pages : 214
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Author: Charles H. Recchia
Publisher:
ISBN:
Category :
Languages : en
Pages : 242
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Author: J. Robert Schrieffer
Publisher: Springer Science & Business Media
ISBN: 0387687343
Category : Technology & Engineering
Languages : en
Pages : 627
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Book Description
Since the 1980s, a general theme in the study of high-temperature superconductors has been to test the BCS theory and its predictions against new data. At the same time, this process has engendered new physics, new materials, and new theoretical frameworks. Remarkable advances have occurred in sample quality and in single crystals, in hole and electron doping in the development of sister compounds with lower transition temperatures, and in instruments to probe structure and dynamics. Handbook of High-Temperature Superconductvity is a comprehensive and in-depth treatment of both experimental and theoretical methodologies by the the world's top leaders in the field. The Editor, Nobel Laureate J. Robert Schrieffer, and Associate Editor James S. Brooks, have produced a unified, coherent work providing a global view of high-temperature superconductivity covering the materials, the relationships with heavy-fermion and organic systems, and the many formidable challenges that remain.
Author: Franziska Hammerath
Publisher: Springer Science & Business Media
ISBN: 3834824232
Category : Science
Languages : en
Pages : 183
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Nuclear Magnetic Resonance (NMR) has been a fundamental player in the studies of superconducting materials for many decades. This local probe technique allows for the study of the static electronic properties as well as of the low energy excitations of the electrons in the normal and the superconducting state. On that account it has also been widely applied to Fe-based superconductors from the very beginning of their discovery in February 2008. This dissertation comprises some of these very first NMR results, reflecting the unconventional nature of superconductivity and its strong link to magnetism in the investigated compounds LaO1–xFxFeAs and LiFeAs.
Author: Andrew Paul Howes
Publisher:
ISBN:
Category :
Languages : en
Pages : 144
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Author: L C Gupta
Publisher: World Scientific
ISBN: 9814505129
Category : Science
Languages : en
Pages : 684
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Contents:The First Five Years of High-Tc Superconductivity (K A Müller)Different Factors which Govern the Optimisation of High-Tc Superconductive Cuprates Involving Bi-, Tl or Pb (B Raveau, M Hervieu, C Michel, J Provost, A Maignan, C Simon & D Groult)Superconductivity in Cuprates and Other Oxides (H R Ott)Organic Superconductors with Tc Higher than 10K (T Ishiguro & Y Nogami)Fundamentals of RVB Theory and Some Applications to High Temperature Superconductors (G Baskaran)Anyons and Superconductivity (S Das Sarma)Mott Transition in the Hubbard Model (B S Shastry)Superconducting Pairing in Layered Superconductors (S S Jha)Breaking the Log-Jam in Many-Body Physics: Fermi Surfaces Without Fermi Liquids (P W Anderson)Superconductivity in High Magnetic Fields from a Microscopic Theory (A K Rajagopal)Nonequilibrium Superconductivity (R Tidecks)Neutron Scattering Study of the High-Tc Superconducting System YBa2Cu3O6+x (J Rossat-Mignod et al.)Crystal-Field Excitations in High-Tc Superconducting Materials (A Furrer)Superconducting Granular Films (S-I Kobayashi)Transport Properties in the Mixed State of High Temperature Superconductors (A Freimuth)Physics of Josephson Effect and Recent Advances (A Barone & S Pagano)Tunneling Spectroscopy of Copper Oxide Superconductors (T Ekino & J Akimitsu)Superconductivity and Magnetism in Heavy-Fermion Compounds (F Steglich, U Ahlheim, C D Bredl, C Geibel, M Lang, A Loidl & G Sparn)Nuclear Magnetic Resonance Studies in Highly Correlated Systems: Heavy Fermion and High-Tc Superconductors (K Asayama)Pulsed Laser and Cylindrical Magnetron Sputter Deposition of Epitaxial Metal Oxide Thin Films (T Venkatesan et al.) Readership: Physicists, chemists and engineers. keywords:
