La-NQR study of superconductivity in La3Ir2Ge 2

Yutaka Kishimoto, Yu Kawasaki, Takashi Ohno, Dexin Li, Yoshiya Homma, Yoshinobu Shiokawa

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Abstract

139La-NQR measurement has been made in a superconductor La3Ir2Ge2. The spin-lattice relaxation rate 1/T1 measured in the normal state is proportional to the temperature T, indicating that La3Ir2Ge2 is a simple metal. In the superconducting state, a small coherence peak in 1/T1 appears just below the superconducting transition temperature Tc=4.7K and 1/T1 decreases exponentially well below Tc with decreasing temperatures. It is concluded that La3Ir2Ge2 is a BCS superconductor with an energy gap 2Δ(0)/kBTc=3.52.

Original languageEnglish
Pages (from-to)503-505
Number of pages3
JournalPhysica B: Condensed Matter
Volume359-361
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2005 Apr 30

Keywords

  • LaIrGe
  • NQR
  • Superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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    Kishimoto, Y., Kawasaki, Y., Ohno, T., Li, D., Homma, Y., & Shiokawa, Y. (2005). La-NQR study of superconductivity in La3Ir2Ge 2. Physica B: Condensed Matter, 359-361(SPEC. ISS.), 503-505. https://doi.org/10.1016/j.physb.2005.01.128