Advances in Superconductivity VII

1. Front Matter

   Pages III-XXXVIII

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2. Plenary Lectures

   1. Front Matter

      Pages 1-1

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   2. Epitaxial High-Tc Films — Impact on Science and Applications

      • J. Georg Bednorz

      Pages 3-8

   3. Physical Properties of the New Borocarbide Superconductors

      • H. Takagi, R. J. Cava, H. Eisaki, S. Uchida, J. J. Krajewski, W. F. Peck Jr.

      Pages 9-14

   4. Strong Flux Pinning In Melt-Grown RE123 (RE: Sm, Eu, Gd) Superconductors

      • Masato Murakami, Sang-Im Yoo, Takamitsu Higuchi, Takashi Oyama, Naomichi Sakai, Shoji Tanaka

      Pages 15-18

   5. Investigation of the Josephson Effect in Y(Yb)Ba2Cu3O7−y Single Crystal Break Junctions

      • G. Müller, Ya. G. Ponomarev, B. A. Aminov, M. A. Hein, H. Piel, D. Wehler

      Pages 19-22

   6. Progress and Recent Trend of SMES Research

      • Fujio Irie

      Pages 23-28

3. Physics

   1. Front Matter

      Pages 29-29

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   2. Tunneling and Electron Spectroscopy

      1. Determining the Symmetry of the Superconducting Pairing State from Phase Coherence in Josephson Junctions and dc SQUIDs

         • D. J. Van Harlingen, D. A. Wollman

         Pages 33-38

      2. A Search for Nodes in the Wavefunction of Superconducting Y1Ba2Cu3O7−δ Thin Films

         • S. Y. Lin, P. Chaudhari, N. Khare

         Pages 39-43

      3. Symmetry of Pair Potential Observed by Tunneling Spectroscopy

         • Satoshi Kashiwaya, Yukio Tanaka, Masao Koyanagi, Hiroshi Takashima, Koji Kajimura

         Pages 45-48

      4. Low temperature STM/STS measurements on c-axis oriented Y1Ba2Cu4O8 superconductive films

         • Wu Ting, M. Badaye, R. Itti, K. Ishimaru, T. Morishita, N. Koshizuka et al.

         Pages 49-52

      5. Gap Value Determinations on the Tunneling Spectrum

         • Toshiyuki Kita, Daisuke Akasako, Hironaru Murakami, Ryozo Aoki

         Pages 53-56

      6. LT-STM/STS Study on Bi2Sr2CaCu2Oy

         • Hironaru Murakami, Toshiyuki Kita, Ryozo Aoki

         Pages 57-60

      7. Observation of Inhomogeneous Spatial Conductivity on YBCO Single Crystal by LT-UHV-STM

         • R. Itti, Wu Ting, H. Sakai, Y. Yamada, Y. Ishimaru, Y. Enomoto et al.

         Pages 61-64

      8. Manifestation of a Clear Gap Structure and Quantum Size Effects From Point-Contact and Tunneling Spectroscopy of YBa2Cu3O7−x and YbBa2Cu3O7−x Single Crystals

         • H. Piel, Ya. G. Ponomarev, B. A. Aminov, N. B. Brandt, M. A. Hein, Chong Soon Khi et al.

         Pages 65-68

      9. Scanning Tunneling Microscopy of Cleaved Surfaces of <b>Bi</b>_<b>2</b><b>Sr</b>_<b>2</b><b>CuO</b>_<b>6</b>_+δ

         • Akira Inoue, Masao Nakao, Ryouzo Yoshizaki

         Pages 69-72

   3. Transport and Thermal Properties

      1. A Thermodynamic Investigation of the Normal State Spectrum of YBa2Cu3O6+x

         • J. W. Loram, K. A. Mirza, J. M. Wade, J. R. Cooper, N. Athanassopoulou, W. Y. Liang

         Pages 75-80

      2. Anomalous Transport Properties in the Tetragonal Superconductor CaLaBaCu3Oy

         • Masahiro Akinaga, Hideki Takano, Tetsuya Hashiguchi

         Pages 81-84

      3. Annealing Effect on the c-Axis Negative Magnetoresistance in Bi-2212 Single Crystals

         • Hiroyuki Kado, Koichi Nakao, Katsufumi Hashimoto, Toshio Egi, Naoki Koshizuka

         Pages 85-88

The field of high-temperature superconductivity has encouraged an inter­ disciplinary approach to research. It has required significant cooperation and collaboration among researchers, each of whom has brought to it a rich variety of experience from many other fields. Recently, great improvements have been made in the quality of research. The subject has matured and been launched into the next stage through the resonance between science and technology. The current progress of materials processing and engineering in this field is analogous to that previously seen in the development of semiconductors. These include the appearance of materials taking the place of YBa2Cu307 owing to their improved properties (higher critical temperatures and stronger flux pin­ ning) in which rare earth ions with large radii (La, Nd, Sm) substitute for Y; the development of technology enabling growth control on the nanometer scale; and precise and reproducible measurements that can be used as rigorous testsof theoretical models, which in turn are expected to lead to the develop­ ment of new devices. For further progress in high-T research, academics and c technologists must pool their knowledge and experience. I hope that this volume will promote that goal by providing the reader with the latest results of high-temperature superconductor research and will stimulate further discussion and collaboration.

• High-temperature superconductivity
• High-temperature superconductors
• Superconducting technology
• Superconductor
• chemistry
• materials science
• superconductivity

• Department of Electronics, Faculty of Engineering, Kyushu University, Higashi-Ku, Fukuoka 812, Japan

  Kaoru Yamafuji

• Superconductivity Research Laboratory, ISTEC, Koto-ku, Tokyo 135, Japan

  Tadataka Morishita

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