Detailed Investigation of Gap Structure and Specific Heat in the p-wave Superconductor Sr2RuO4.
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- Nomura Takuji
- Department of Physics, Kyoto University, Kyoto 606-8502
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- Yamada Kosaku
- Department of Physics, Kyoto University, Kyoto 606-8502
Bibliographic Information
- Other Title
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- Detailed Investigation of Gap Structure and Specific Heat in the<i>p</i>-wave Superconductor Sr<sub>2</sub>RuO<sub>4</sub>
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Abstract
We present the highly anisotropic p-wave superconducting gap structure of Sr2RuO4, which was determined microscopically by solving the linearized Éliashberg equation on the basis of the perturbation theory with respect to the Coulomb energy at Ru sites. We trace the evolution of the gap function below Tc, following the elementary BCS theory, and calculate specific heat for the superconducting state with the symmetry represented by d(k) ∼ (kx+ i ky)ˆz. The strong momentum dependences of the gap structure provide a line-node-like power-law behavior of the specific heat even at extremely low temperature. As a result, the calculation results of specific heat agree with the experimental results well for moderately strong inter-orbit couplings.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 71 (2), 404-407, 2002
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390001204183664256
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- NII Article ID
- 110001971556
- 130004538056
- 210000104059
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- NII Book ID
- AA00704814
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- BIBCODE
- 2002JPSJ...71..404N
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 6064994
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed