title: Oscillating rows of vortices in superconductors.
abstract: Superconductors can be used as dissipation-free electrical conductors as long as vortices are pinned. Vortices in high-temperature superconductors, however, behave anomalously, reflecting the anisotropic layered structure, and can move readily, thus preventing their practical use. Specifically, in a magnetic field tilted toward the layer plane, a special vortex arrangement (chain-lattice state) is formed. Real-time observation of vortices using high-resolution Lorentz microscopy revealed that the images of chain vortices begin to disappear at a much lower temperature, Td, than the superconducting transition temperature, Tc. We attribute this image disappearance to the longitudinal oscillation of vortices along the chains.
authors.affiliation: Advanced Research Laboratory, Hitachi Ltd., Hatoyama, Saitama 350-0395, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Matsuda
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authors.lastname: Kamimura
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authors.lastname: Kasai
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authors.lastname: Harada
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authors.lastname: Yoshida
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authors.lastname: Akashi
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authors.lastname: Tonomura
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authors.lastname: Nakayama
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authors.lastname: Shimoyama
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authors.lastname: Kishio
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authors.lastname: Hanaguri
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authors.lastname: Kitazawa