Acoustic de Haas-van Alphen Effect and Elastic Anomaly of Transverse Mode(C_<11>-C_<12>)/2 in Sr_2RuO_4 : Condensed Matter: Electronic Properties, etc.

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概要

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• The acoustic de Haas-van Alphen (dHvA) effect and temperature dependence of the transverse mode (C_<11> - C_<12>)/2 have been measured in a layered Perovskite superconductor Sr_2Ru0_4 with T^*_c= 1.42K. From the acoustic, dHvA oscillations for a and p orbits along [001], the area coefficients are estimated to be |Λ^α_<B1g>| = 0.8 and |Λ^β_<B1g>| = 0.2 ~ 0.3. Both Fermi surfaces consisting of hybridized Ru-4d_<zx>(yz)> orbitals couple weakly~ to ε_<xx> - ε_<yy>, because the in-plane shear strain hardly varies the spacing between the alternating Ru0_2 layers. Large softening occurs below 220 K, which corresponds to the rotational instability. The rotational deformation of the Ru0_6 octahedron is induced perturbingly by ε_<xx> - ε_<ye> which reduces the lattice matching.

• 社団法人日本物理学会の論文
• 2000-12-15

著者

• MATSUI Hiroshi

  Physics Department, Graduate School of Science, Tohoku University

• TOYOTA Naoki

  Physics Department, Graduate School of Science, Tohoku University

• SETTAI Rikio

  Graduate School of Science, Osaka University

• Hedo M

  Institute For Solid State Physics University Of Tokyo

• AOKI Haruyoshi

  Center for Low Temperature Science, Tohoku University

• KIMURA Noriaki

  Center for Low Temperature Science, Tohoku University

• Toyota Naoki

  Physics Department Graduate School Of Science Tohoku University

• Honma T

  Japan Synchrotron Radiation Research Institute

• Aoki Haruyoshi

  Center For Low Temperature Science Tohoku University

• Hidekazu Mukuda

  Department Of Materials Engineering Science Graduate School Of Engineering Science Osaka University

• Kimura Noriaki

  Physics Department Graduate School Of Science Tohoku University

• Kimura Noriaki

  Center For Low Temperature Science Tohoku University

• YOSHIDA Yoshiyuki

  Graduate School of Science,Osaka University

• TAKEI Humihiko

  Graduate School of Science, Osaka University

• Yoshida Yukihiko

  Department Of Applied Physics Faculty Of Science Tokyo University Of Science

• Yoshida Y

  Graduate School Of Science Osaka University

• Honma Tetsuo

  Graduate School Of Science Hokkaido University

• Takei Humihiko

  Graduate School Of Science Osaka University

• O^^-NUKI Yoshichika

  Graduate_School of Science, Osaka University

• Yoshida Yoshiyuki

  Graduate School Of Science Osaka University

• Azuma H

  Spring-8/riken

• Kimura N

  Graduate School Of Science And Center For Low Temperature Science Tohoku University

• Mukai Atsushi

  Graduate School Of Science Osaka University

• Mukuda Hidekazu

  Graduate School Of Science Osaka University

• Hirai Toshiyuki

  Institute Of Materials Science University Of Tsukuba

• Matsui Hiroshi

  Physics Department Graduate School Of Science Tohoku University

• O^^-NUKI Yoshichika

  Graduate School of Science, Osaka University

• YOSHIDA Yoshiyuki

  Graduate School of Science, Osaka University

• MUKAI Atsushi

  Graduate School of Science, Osaka University

• KIMURA Noriaki

  Center for Low Temperature Science.Tohoku University

• MATSUI Hiroshi

  Physics Department, Graduate School of Science and Center for Interdisciplinary Research, Tohoku University

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