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Book synopsis

The fields of condensed-matter physics and materials§science entered§a new era with the discovery of high-temperature§superconductors more than two§decades ago. However, despite the§large volume of work published on their properties,§and despite§their many uses, there is surprisingly little§agreement in the§condensed matter community regarding one of their§most fundamental§behaviors: the normal-superconducting phase§transition. This book describes investigations of§the superconducting§phase transition of YBCO thin films in zero magnetic§field. Simple§voltage vs. current curves at temperatures close§to the transition temperature show that the§standard scaling analysis§fails at low currents, contrary to what is widely§accepted -- but that there is§evidence for the phase transition at higher currents.§At lower currents, there are significant finite-size§effects due to§the thickness of the films. The crossover to§from three-dimensional to two-dimensional§behavior occurs even in thick films, and§obscures the transition in zero field. This§effect would also occur in a magnetic field, and may§explain the§wide range of critical exponents found in the literature.

Book details

Book category Knihy po anglicky Mathematics & science Physics

• Full title: Normal-Superconducting Phase Transition in Zero Magnetic Field
• Author: Matthew C. Sullivan
• Language: English
• Binding: Paperback
• Number of pages: 200
• EAN: 9783639091441
• ISBN: 3639091442
• ID: 06818243
• Publisher: VDM Verlag Dr. Mueller E.K.
• Weight: 272 g
• Dimensions: 229 × 152 × 11 mm
• Date of publishing: 06. October 2008

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