Number-Phase Fluctuations in Two-Band Superconductors

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概要

• 論文の詳細を見る

• It is shown that in a clean two-band(transition-metal)superconductor there appears a collective excitation corresponding to small fluctuations of the relative phase of the two "condensates". In contrast to the transverse collective excitations in ordinary superconductors, the energy of this mode can be derived directly from existing experimental data;for Nb it lies about at the middle of the smaller single-particle gap. Direct experimental detection of this resonance is estimated to be rather beyond the limits of available techniques, but its effect on the ultrasound dispersion curve should be easily observable. The phenomenon is used to elucidate the physical nature of excitons in superconductors in general.

• 理論物理学刊行会の論文
• 1966-11-25

著者

• Leggett A.

  Magdalen College Oxford : Department Of Physics Kyoto University

• Leggett A.

  Magdalen College Oxford England And Department Of Physics Kyoto

• LEGGETT A.

  Magdalen College, Oxford, England and Department of Physics, Kyoto

• Leggett A.J.

  Magdalen College, Oxford, England and Department of Physics, Kyoto

関連論文

• Persistence of Zero Sound in the Possible Superfluid Phase of He^3
• Electron-Phonon Interactions in the Transition Metals
• Number-Phase Fluctuations in Two-Band Superconductors

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