Sb-NQR Probe for Multipole Degree of Freedom in the First Pr-Based Heavy-Fermion Superconductor PrOs_4Sb_<12>(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

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概要

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• We report ^<121.123>Sb nuclear quadrupole resonance (NQR) measurements in the filled-skutterudite superconductor PrOs_4Sb_<12> in the temperature range of 0.05-30K. The electric field gradients (EFG), V_<zz> and V_<xx>-V_<yy>, at the Sb site exhibit unusual temperature dependence below 30K. To explain these features, we discuss the coupling between the Sb nuclear quadrupole moment and Pr 4f^2-derived multipole moments. The observed T dependence of EFG is well explained by the CEF pseudo-quarted consisting of Γ_1 singlet and Γ^<(2)>_4 triplet states in the cubic point group T_h. These results, in turn, are indicative of the importance of the coupling between the ^<121.123>Sb quadrupole moments and the hexadecapole moment caused by the pseudo-quartet.

• 社団法人日本物理学会の論文
• 2005-10-15

著者

• SUGAWARA Hitoshi

  Faculty of Integrated Arts and Sciences, The University of Tokushima

• SATO Hideyuki

  Department of Physics, Tokyo Metropolitan University

• 山田 道夫

  京都大学数理解析研究所

• 椎名 亮輔

  Department Of Physics Tokyo Metropolitan University

• SHIINA Ryousuke

  Department of Physics, Tokyo Metropolitan University

• TOU Hideki

  Department of Quantum Matter, AdSM, Hiroshima University

• DOI Masahiro

  Department of Quantum Matter, AdSM, Hiroshima University

• SERA Masafumi

  Department of Quantum Matter, AdSM, Hiroshima University

• YOGI Mamoru

  Department of Materials Science and Technology, Graduate School of Engineering Science, Osaka Univer

• Sera Masafumi

  Department Of Physics Faculty Of Science Nagoya University

• Tou Hideki

  Department Of Material Physics Faculty Of Engineering Science Osaka University

• Yogi Mamoru

  Department Of Physics And Earth Sciences Faculty Of Science University Of The Ryukyus

• Yogi Mamoru

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

• Doi Masahiro

  Department Of Mechanical Engineering Faculty Of Engineering Musashi Institute Of Technology

• Shiina Ryousuke

  Department Of Physics Faculty Of Science Science University Of Tokyo

• Sugawara Hitoshi

  Faculty Of Engineering Iwate University

• Shiozawa Hidetsugu

  Department Of Physics Tokyo Metropolitan University

• Doi Masahiro

  Department Of Quantum Matter Adsm Hiroshima University

• Sato H

  Department Of Analytical Chemistry Faculty Of Engineering Yokohama National University

• Sugawara H

  Faculty Of Engineering Iwate University

• Sato Hideyuki

  Department Of Cardiology Osaka University Graduate School Of Medicine

• Sato Hideyuki

  Department Of Applied Chemistry Faculty Of Science And Technology Keio University

• Doi Masahiro

  Department Of Cardiovascular Medicine Medical Bioregulation Yamaguchi University School Of Medicine

• YOGI Mamoru

  Department of Materials Science and Technology, Graduate School of Engineering Science, Osaka University:(Present address)Faculty of Science, University of the Ryukyus

• Yogi M

  Department of Materials Science and Technology, Graduate School of Engineering Science, Osaka University

• Shiina R

  Department of Physics, Tokyo Metropolitan University

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