Abstract
We report the 11B NMR measurements in non-centrosymmetric superconductors Li2(Pd1-xPtx)3B (x=0.0,0.2,0.5,1.0),Mg9.3Ir19B16.7 and Mg 10.5Ir19B17.1. In Li2(Pd 1-xPtx)3B, BCS superconducting state for x=0-0.5 evolves into an exotic state with line nodes in the gap function for x=1, which is attributed to the enhanced spin-orbit coupling due to heavy element Pt. In Mg9.3Ir19B16.7 and Mg 10.5Ir19B17.1, Cooper pairs are predominantly in the spin-singlet state with an isotropic gap. However, in Mg 10.5Ir19B17.1 the spin susceptibility remains finite even in the zero-temperature limit, which is due to the defects that enhance the spin-orbit coupling and bring about more spin-triplet component.
Original language | English |
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Pages (from-to) | S678-S681 |
Journal | Physica C: Superconductivity and its applications |
Volume | 470 |
Issue number | SUPPL.1 |
DOIs | |
Publication status | Published - Dec 1 2010 |
Keywords
- NMR
- Noncentrosymmetric superconductor
- Nuclear spin-lattice relaxation rate
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering