The Competition between the 0-and π-Phase Shift in the Pb-Sr2RuO4-Pb Junction

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概要

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• Recent measurements of the Josephson effect between two Pb-films via Sr_2RuO_4 show a very anomalous temperature dependence of the maximal supercurrent. In this article we show that this result is consistent with the assumption of (spin-triplet) odd-parity pairing. Using a generalized Ginzburg-Landau theory for the specific geometry of the experimental device, it is shown that there are two contributions to the Josephson current. One is due to a proximity-induced s-wave component in Sr_2RuO_4, and the other is due to the intrinsic odd-parity order parameter. These two components have opposite sign and lead to a competition below the onset of superconductivity in Sr_2RuO_4 yielding the anomalous properties. Two possible test experiments for this kind of scenario are proposed.

• 理論物理学刊行会の論文
• 1998-07-25

著者

• Honerkamp Carsten

  Theoretische Physik Eth-honggerberg

• Sigrist Manfred

  Yukawa Institute For Theoretical Phyasics Kyoto University

関連論文

• Pairing Symmetry of the Superconductor Sr_2RuO_4
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• Phenomenological Theory of the 3 Kelvin Phase in Sr_2RuO_4
• The Role of Domain Walls on the Vortex Creep Dynamics in Unconventional Superconductors
• Spin-Orbit Coupling and the in-Plane Anisotropy of the Upper Critical Field in Sr_2RuO_4 : Condensed Matter: Electronic Properties, etc.
• Chiral Optical Absorption by a Vortex in p_x±ip_y-Wave Superconductor
• Analysis of Impurity-Induced Circular Currents for the Chiral Superconductor Sr_2RuO_4
• Nonmagnetic Impurities in Spin Gap Systems
• Spin Wave Mode of Edge-Localized Magnetic States in Nanographite Zigzag Ribbons
• Monte Carlo Study of the Separation of Energy Scales in Quantum Spin 1/2 Chains with Bond Disorder
• Time-Reversal Symmetry Breaking Surface States in t-J Model
• Quasiparticle States near the Surface and the Domain Wall in a p_x±ip_y-Wave Superconductor
• Fermionic Renormalization Group Flows : Technique and Theory
• Low-Temperature Properties of the Randomly Depleted Heisenberg Ladder
• Time-Reversal Symmetry Breaking States in High-Temperature Superconductors
• The Competition between the 0-and π-Phase Shift in the Pb-Sr2RuO4-Pb Junction
• The Competition between the 0- and π-Phase Shift in the Pb-Sr_2RuO_4-Pb Junction : Condensed Matter and Statistical Physics
• Phenomenological Theory of the 3 Kelvin Phase in Sr2RuO4

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