The Specific Heat and Superconductivity of La-Ge System

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概要

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• The low temperature specific heat of orthorohmbically distorted C_c-type La-Ge compounds have been measured in order to investigate the origin of an anomalously small specific heat jump, (？C/γT)_<T=Tc>, of LaGe_2 at the superconducting transition temperature. LaGe_x has orthorohmbically distorted C_c-type crystal structure in the composition range 2.0≤x≤1.78. For 2.0≤x≤1.85, (？C/γT)_<T=Tc> is anomalously small as in LaGe_2. (？C/γT)_<T=Tc> approaches the B. C. S. value at x=1.78. In the intermediate range, 1.85<x<1.78, there appears two close apecific heat jumps as if samples were of two-phase crystal structure. According to the detailed X-ray study of the crystal structure these curious behaviour of (？C/γT)_<T=Tc> seems to be due to some intrinsic origin and a possible model is discussed.

• 社団法人日本物理学会の論文
• 1969-12-05

著者

• SATOH Takeo

  Department of Physics,Tohoku University

• Asada Yuji

  Metal Physics Division National Research Institute For Metals

• Satoh Takeo

  Department Of Physics Faculty Of Science Tohoku University

• Satoh Takeo

  Department Of Ophthalmology Yamagata University School Of Medicine

• SATOH Takeo

  Department of Physics, Faculty of Science, Tohoku University

• Satoh Takeo

  Department of Allergy and Rheumatic Diseases, Japanese Red Cross Medical Center, Japan

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