Physical properties of noncentrosymmetric superconductor Ru$ 7$B$ 3$ - Condensed Matter > SuperconductivityReportar como inadecuado




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Abstract: Transition metal boride Ru$ 7$B$ 3$ was found to be a noncentrosymmetricsuperconductor with $T {C}$ equal to 3.3 K. Superconducting and normal stateproperties of Ru$ 7$B$ 3$ were determined by a self-consistent analysis throughresistivity$ ho {xx}$ and $ ho {xy}$, specific heat, lower critical fieldmeasurement and electronic band structure calculation. It is found thatRu$ 7$B$ 3$ belongs to an s-wave dominated single band superconductor withenergy gap 0.5 meV and could be categorized into type II superconductor withweak electron-phonon coupling. Unusual -kink- feature is clearly observed infield-broadening resistivity curves, suggesting the possible mixture of spintriplet induced by the lattice without inversion symmetry.



Autor: Lei Fang, Huan Yang, Xiyu Zhu, Gang Mu, Zhao-Sheng Wang, Lei Shan, Cong Ren, Hai-Hu Wen

Fuente: https://arxiv.org/







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