Basal-Plane Magnetic Anisotropies of High-κ d-Wave Superconductors in a Mixed State : A Quasiclassical Approach(Condensed matter: electronic structure and electrical, magnetic, and optical properties)

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概要

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• We study the basal-plane anisotropies of reversible magnetization and torque in a mixed state of layered d-wave superconductors based on the quasiclassical version of the BCS-Gor'kov theory. Both the longitudinal magnetization (M_L) and torque (τ) show fourfold oscillations as a function of the field angle χ. The relationship between the node position and the oscillatory patterns shown by M_L and τ is clarified. It is also shown that the sign of the τ(χ)-oscillation does not change between H_<c1> and H_<c2>, while the sign of the M_L(χ)-osciUation changes. The newly obtained result for τ indicates that the torque experiment can allow us to detect the in-plane anisotropies of H_<c2> even in a material with strong fluctuations such as cuprate or organic superconductors, where the H_<c2> itself cannot be determined experimentally.

• 社団法人日本物理学会の論文
• 2006-08-15

著者

• MIRANOVIC Predrag

  Department of Physics, University of Montenegro

• ICHIOKA Masanori

  Department of Physics, Okayama University

• MACHIDA Kazushige

  Department of Physics, Okayama University

• Miranovic Predrag

  Department Of Physics Okayama University

• Machida Kazushige

  Department Of Physics Kyoto University

• ADACHI Hiroto

  Department of Physics, Okayama University

• Adachi Hiroto

  Department Of Physics Okayama University:(present Office)theoretische Physik Eth-honggerberg

• Adachi Hiroto

  Department Of Physics Kyoto University

• Ichioka Masanori

  Department Of Physics Kyoto University

• Adachi Hiroto

  Eth‐hoenggerberg Zurich Che

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