Advances in Superconductivity III

1. Front Matter

   Pages I-XXXIII

   PDF

2. Plenary Lectures

   1. Front Matter

      Pages 1-1

      PDF

   2. High-Tc Thin-Film Microelectronics

      • John Clarke, Du Quan, M. J. Ferrari, J. J. Kingston, A. H. Miklich, F. C. Wellstood

      Pages 3-10

   3. Flux Pinning in Y-Ba-Cu-O Superconductor Prepared by Melt-Powder-Melt-Growth Process

      • M. Murakami, T. Oyama, H. Fujimoto, S. Gotoh, K. Yamaguchi, T. Takata et al.

      Pages 11-16

   4. Electronic Raman Scattering in High Temperature Superconductors

      • M. V. Klein, F. Slakey, D. Reznik, J. P. Rice, D. M. Ginsberg

      Pages 17-22

   5. Fabrication and Superconducting Properties of YBa2Cu3O7/PrBa2Cu3O7 Artificial Superlattices

      • Jean-Marc Triscone, Louis Antognazza, Olivier Brunner, Laurent Miéville, Michael Karkut, Thierry Boichat et al.

      Pages 23-28

   6. A 4.2K Josephson Digital Computer

      • Susumu Takada

      Pages 29-34

   7. United States Progress in Superconducting Magnetic Energy Storage (SMES)

      • Robert B. Schainker

      Pages 35-40

3. Physics

   1. Front Matter

      Pages 41-41

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   2. Theoretical Studies

      1. Superconducting Properties in Layered Cuprate Oxides

         • M. Tachiki, T. Koyama, S. Takahashi

         Pages 45-51

      2. Gauge Field Theory of the High-Tc Superconductors

         • N. Nagaosa

         Pages 53-56

      3. Superconductivity due to Interband Pair-Transfer Interaction Divergently Enhanced by a Filled Band

         • K. Yamaji, T. Kinoshita

         Pages 57-60

      4. Mott-Hubbard Band and Charge Transfer Gap in La2CuO4

         • Mitsuo Kataoka

         Pages 61-64

      5. Electronic States of Metal (Ti,V,Cr) Oxides

         • Kimichika Fukushima, Hirohiko Adachi

         Pages 65-68

      6. Superconductivity in a System with Intermediate Statistics

         • Vladimir L. Safonov

         Pages 69-72

   3. Electron Spectroscopy

      1. Oxygen K-Absorption Spectroscopy of La2−xSrxCuO4 (x=0.0−0.5), YBa2Cu3O7−δ (δ=0.0−0.7), and Nd2−y,CeyCuO4 (y=0.0−0.2)

         • Takashi Takahashi, Hiroyoshi Matsuyama, Takanori Watanabe, Hiroshi Katayama-Yoshida, Shigeru Sato, Nobuhiro Kosugi et al.

         Pages 75-78

      2. Electron Energy Loss Spectroscopy in Ba2YCu3O7 Superconductor

         • Kensuke Shiraishi, Hiroshi Itoh

         Pages 79-82

      3. EELS and XPS Study of Y1−xCaxBa2Cu4O8 (x=0∼0.1)

         • Kazuki Yoshimura, Yasuharu Kodama, Sakae Tanemura

         Pages 83-86

      4. Superconductivity and Electronic State of Nd-Ce-Cu-O System

         • Yuko Yokoyama, Toshikazu Katayama, Hiroyuki Oyanagi, Yuichi Hasumi, Yoshikazu Nishihara

         Pages 87-90

      5. Unoccupied Electronic Structure of Bi2Sr2Ca1−xYxCu2O8 Studied by Inverse Photoemission

         • T. Watanabe, S. Suzuki, T. Takahashi, H. Katayama-Yoshida, S. Sato

         Pages 91-94

Since the discovery of high temperature superconductors, many new materials have been invented. In the last year, several new materials were also discovered, but their critical temperatures are still below lOOK. Precise physical and chemical work has made tremendous progress in the theoretical and experimental study of physical properties and carrier state characterizations. The de Haas van Alphen effect measurement showed the existence of a Fermi surface in YBCO. Flux dynamics is a well-known new problem in which flux creep and irreversibility line features are especially important for a fundamental understanding of the critical current and flux pinning. Flux pinning centers which are intentionally added using non-superconducting precipitates, neutrons, and protons, etc. increase critical currents to practical levels. The analysis of electric and magnetic properties are expected to reveal the pinning mechanism and also to further application development. As for wires and bulks, many melt-like sintering techniques have improved the material performance of critical current densities. A new seeding Quench-Melt­ Growth technique enlarged crystal size and increased the repulsion force. These melting processes, in conjunction with a mechanical strength improvement have been effectively introduced into wire fabrication in order to realize kilometer range wires and will put the oxide wires to practical use. Where thin film is con­ cerned, when many fabrication methods had been developed using the assistance effect of activated oxygen such as ozone and oxygen radicals, a high current 2 density of 106A/cm at 77K was reported.

• development
• material
• superconductivity

• Electrotechnical Laboratory, Umezono, Tsukuba 305, Japan

  Koji Kajimura

• School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464, Japan

  Hisao Hayakawa

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