Magnetic Susceptibility Study of LaRu<sub>3</sub>Si<sub>2</sub>

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  • Kishimoto Yutaka
    Department of Physics, Faculty of Engineering, Tokushima University, Tokushima 770-8506
  • Ohno Takashi
    Department of Physics, Faculty of Engineering, Tokushima University, Tokushima 770-8506
  • Hihara Takehiko
    Nagoya Institute of Technology, Nagoya 466-8555
  • Sumiyama Kenji
    Nagoya Institute of Technology, Nagoya 466-8555
  • Ghosh Goutam
    Tata Institute for Fundamental Research, Bombay 400 005, India
  • Gupta Laxmi C.
    Tata Institute for Fundamental Research, Bombay 400 005, India

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  • Magnetic Susceptibility Study of LaRu3Si2.

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We have measured the magnetization of LaRu3Si2 to investigate the electronic states in the normal and superconducting states. LaRu3Si2 is a typical type II superconductor with the superconducting transition temperature Ts=6.5 K. We estimated the lower critical field, upper critical field, coherence length, penetration depth and Ginzburg-Landau parameter at 2.0 and 4.2 K. We also derived these values at T=0 K according to Ginzburg-Landau theory. In the normal state, the intrinsic magnetic susceptibility after subtracting the impurity part depends on temperature. The fact is considered to be due to a high density of states and a narrow band.

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