Lattice Instability and Elastic Response in the Heavy Electron System URu_2Si_2

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概要

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• We have performed thermal expansion and elastic constant measurements of the heavy electronsystem URuzSiz, focusing attention on the f3(.r' - y') and fj(.ry) syrnrnetr'y of the tetragonalgroup D,jj. It is reconfirmed that there is no sizable uniform spontaneous distortion for thesetwo types of symmetry through the puzzling phase transition at Tc) O 17.5 K. On the otherhand, a weak but significant tendency of softening are fotrnd below about 70 K in the transverse(c?u - C12)/2 mode. The restrlts strongly strggest the presence of a lattice instability in the 73symmetry. From the results, proposed crystalline-electric-field models are also discttssed.

• 社団法人日本物理学会の論文
• 1997-10-15

著者

• Kuwahara Keitaro

  Department Of Physics Faculty Of Science Tokyo Metropolitan University

• Kodama Katsuaki

  Department Of Physics Division Of Material Science Nagoya University:crest Japan Science And Technol

• GOTO Terutaka

  Graduate School of Science and Technology,Niigata University

• KUWAHARA Keitaro

  Institute of Applied Beam Science, Ibaraki University

• Visser Anne

  Van Der Waals-zeeman Institute University Of Amsterdam

• Tatsuoka Sho

  Graduate School Of Science Tokyo Metropolitan University

• Gotoh Takayuki

  Institute For Materials Research Tohoku University

• A. Menovsky

  Van Der Waals-zeeman Institute University Of Amsterdam

• SUZUKI Osamu

  Graduate School of Science and Technology,Niigata University

• AMITSUKA Hiroshi

  Division of Physics,Graduate School of Science,Hokkaido University

• SAKAKIBARA Toshiro

  Division of Physics,Graduate School of Science,Hokkaido University

• Goto T

  Univ. Tokyo Chiba

• Goto Tsuneaki

  Institute For Solid State Physics University

• KUWAHARA Keitaro

  Division of Physics, Graduate School of Science, Hokkaido University

• MIHALIK Marian

  Institute of Experimental Physics, SAS

• Sakakibara Toshiro

  Division Of Physics Graduate School Of Science Hokkaido University

• Goto Terutaka

  Graduate School Of Science And Technology Niigata University

• Amitsuka Hiroshi

  Division Of Physics Graduate School Of Science Hokkaido University

• Nakamura Shintarou

  Center For Low-temperature Science Tohoku University

• Katayama Keisuke

  Graduate School Of Science Osaka University

• Goto Tsuneaki

  The Institute Of Solid State Physics Tokyo University

• Azuma H

  Spring-8/riken

• Kuwahara Keitaro

  Institute Of Applied Beam Science Ibaraki University

• Nakamura S

  Center For Low Temperature Science Tohoku University

• Nakamura Shintaro

  Research Institute For Scientific Measurements Tohoku University

• Jaap J.

  Van der Waals-Zeeman Institute,University of Amsterdam

• Mihalik M

  Institute Of Experimental Physics Sas

• NAKAMURA Sadao

  College of Medical Technology,Kyoto University

• Nakamura S

  Industrial Research Inst. Ishikawa Kanazawa‐shi

• Kuwahara K

  Department Of Physics Faculty Of Science Tokyo Metropolitan University

• Jaap J.

  Van Der Waals-zeeman Institute University Of Amsterdam

• Suzuki Osamu

  Graduate School Of Advanced Sciences Of Matter Department Of Molecular Biotechnology Hiroshima Unive

• Amitsuka Hiroshi

  Hokkaido Univ. Sapporo

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