Nuclear spin-lattice relaxation in non-centrosymmetric superconductors Li2(Pd,Pt)3B

M. Kandatsu, M. Nishiyama, Yoshihiko Inada, Guo-Qing Zheng

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We present 11B nuclear magnetic resonance (NMR) measurements in superconductors Li2(Pd,Pt)3B without inversion symmetry. In Li2Pd3B, the spin lattice relaxation rate 1/T 1 shows a well-defined coherence peak below Tc, and follows an exponential temperature variation exp(-Δ/kBT) at low temperatures. At a magnetic field of 1.46 T, the energy gap Δ was found to be 1.1kBTc, but it recovers to 1.5kBT c at a field of 0.44 T, which is quite close to the value 1.75k BTc for a weak coupling BCS superconductor. This behavior is in contrast to that found in Li2Pt3B where 1/T 1 is proportional to T3, and the difference between the two compounds is ascribed to the different strength of spin orbit coupling.

Original languageEnglish
Pages (from-to)348-349
Number of pages2
JournalJournal of the Physical Society of Japan
Volume77
Issue numberSUPPL.A
Publication statusPublished - 2008

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spin-lattice relaxation
nuclear spin
inversions
orbits
nuclear magnetic resonance
symmetry
magnetic fields
temperature

Keywords

  • LiPdB
  • LiPtB
  • NMR
  • Superconductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Nuclear spin-lattice relaxation in non-centrosymmetric superconductors Li2(Pd,Pt)3B. / Kandatsu, M.; Nishiyama, M.; Inada, Yoshihiko; Zheng, Guo-Qing.

In: Journal of the Physical Society of Japan, Vol. 77, No. SUPPL.A, 2008, p. 348-349.

Research output: Contribution to journalArticle

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