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

M. Kandatsu, M. Nishiyama, Y. 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
DOIs
Publication statusPublished - Jan 1 2008

Keywords

  • LiPdB
  • LiPtB
  • NMR
  • Superconductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Nuclear spin-lattice relaxation in non-centrosymmetric superconductors Li<sub>2</sub>(Pd,Pt)<sub>3</sub>B'. Together they form a unique fingerprint.

  • Cite this