Superconductivity of the Ternary Boride Li_2Pd_3B Probed by ^{11}B NMR

Details Superconductivity of the Ternary Boride Li_2Pd_3B Probed by ^{11}B NMR Superconductivity of the Ternary Boride Li_2Pd_3B Probed by ^{11}B NMR

2005-06-08

arxiv.org/abs/cond-mat/0506191v1

Phys. Rev. B 71, 220505(R) (2005)

Physics

Condensed Matter

Superconductivity

4 pages, 5 figures

Scientific paper

10.1103/PhysRevB.71.220505

We report a ^{11}B NMR measurement on the recently discovered superconductor Li_2Pd_3B. The nuclear spin lattice relaxation rate 1/T_1 shows a well-defined coherence peak just below T_c (H=1.46 T)=5.7 K, and the spin susceptibility measured by the Knight shift also decreases below T_c. These results indicate that the superconductivity is of conventional nature, with an isotropic gap. Our results also suggest that the $p$-electrons of boron and the d-electrons of palladium that hybridize with boron $p$-electrons are primarily responsible for the superconductivity.

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