139La NQR relaxation in a superconductor La3Ir 2Ge2

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

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1 Citation (Scopus)


To investigate the electronic state of La3Ir2Ge 2, we have carried out 139La-NQR measurement. In the normal state, the spin-lattice relaxation rate 1/T1 is proportional to the temperature T. 1/T1 shows a small coherence peak just below the superconducting transition temperature Tc = 4.7 K and decreases exponentially well below Tc. La3Ir2Ge 2 is found to be a BCS superconductor with an energy gap 2Δ(0) = 3.52kBTc.

Original languageEnglish
Pages (from-to)3389-3393
Number of pages5
JournalJournal of the Physical Society of Japan
Issue number12
Publication statusPublished - 2004 Dec


  • LaIrGe
  • NQR
  • Spectrum
  • Spin-lattice relaxation
  • Superconductor


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