Proceedings of the Workshop on Phase Separation in Cuprate Superconductors, Erice, Italy, 6-12 May 1992 PDF Download
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Languages : en
Pages :
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Languages : en
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Author: Karl Alex Muller
Publisher: World Scientific
ISBN: 9814553514
Category :
Languages : en
Pages : 394
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The main objective of this workshop was to review and discuss the electronic and chemical properties of layered cuprate superconductors. These are doped antiferromagnetic (AFM) insulators, and there is the possibility of a dynamic phase separation into metallic clusters and AFM areas. A clarification on the existence and the mechanism of such a phase separation is believed to be crucial for the understanding of high-Tc superconductivity in cuprates.On the one hand, theoretical and recent experimental indications in favor of this possibility were presented, on the other hand experimental papers expressing more skeptical views were also delivered. Related work on phase separations of chemical and structural origin was also included, followed by contributions on the question; “If phase separation is present, what is the pairing mechanism in the metallic clusters?”.
Author: Ernst Sigmund
Publisher: Springer Science & Business Media
ISBN: 364278805X
Category : Technology & Engineering
Languages : en
Pages : 417
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Phase separation has become a fascinating subject in the discussion of cuprate superconductors. All these materials have layered structures containing CU02 planes as the most important building blocks. They are coupled only weakly so that the electronic properties show a nearly two-dimensional behaviour. Due to correlations the undoped compounds are insulators of the Mott Hubbard type exhibiting long-range antiferromagnetic order. Upon doping a rich scenario of physical phenomena appears: Even at low hole concentra tions the antiferromagnetic ordering temperature is reduced drastically and spin-glass behaviour as well as a hopping type conductivity can be observed. Further doping leads to metallic-like conductivity and below Tc to super conductivity. In this doping regime antiferromagnetic fluctuations are still observed. At very high charge carrier densities superconductivity is lost and the systems show pure metallic conduction without ,magnetic correlations. One of the most interesting phenomena in high-T c research is the interplay between magnetism and conductivity or superconductivity. Especially the behaviour of charge carriers in the antiferromagnetic background raises a number of open questions. Two scenarios become possible: the carriers tend to delocalize over the whole crystal forming a homogeneous state with band-like structure or they separate into hole-rich (conducting, superconducting) and hole-poor (insulating, antiferromagnetic) phases leading to an inhomogeneous structure.
Author: A. N. Das
Publisher:
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Category : High-temperature superconductors
Languages : en
Pages : 588
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Category : Power resources
Languages : en
Pages : 922
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Author: E. Sigmund
Publisher:
ISBN: 9780387576817
Category :
Languages : en
Pages : 0
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Author: Annette Bussmann-Holder
Publisher: MDPI
ISBN: 3036504745
Category : Mathematics
Languages : en
Pages : 312
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Book Description
With this book, we wish to honor the lifework of K. Alex Müller and present him with this book on the occasion of his 94th birthday. We are convinced that he will very much enjoy reading it. We would like to thank all contributors to this book, who addressed topics complementary and related to his work. The articles of the book represent the efforts in solid state physics – spanning more than 60 years – which have been groundbreaking in scientific and applied sciences. Many of the current hot topics are derived from this earlier work which has pioneered the way toward new experimental tools and/or refined techniques. From this point of view, the book presents, on one hand, a historical review and, on the other hand, a directory of possible future research.
Author: K. Alex Müller
Publisher:
ISBN:
Category :
Languages : en
Pages : 379
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Author: Ivo Heinmaa
Publisher:
ISBN:
Category : Copper oxide superconductors
Languages : en
Pages : 198
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Author: American Chemical Society. Chemical Abstracts Service
Publisher:
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Category : Chemistry
Languages : en
Pages : 2064
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A key source to journal and conference abbreviations in the sciences. Although it focuses on chemistry, other scientific and engineering disciplines are also well represented. In addition to the abbreviation and full title, each entry also contains publishing info, title changes, language and frequency of publication, and libraries owning that title. Over 130,000 entries representing more than 70,000 publications dating back to 1907 are included.
