Physical properties of noncentrosymmetric superconductor Ru${}_7$B${}_3$

Abstract

Transition metal boride Ru${}_7$B${}_3$ was found to be a noncentrosymmetric superconductor with $T_C$ equal to 3.3 K. Superconducting and normal state properties of Ru${}_7$B${}_3$ were determined by a self-consistent analysis through resistivity(${\rho }_{xx}$ and ${\rho }_{xy}$), specific heat, lower critical field measurement and electronic band structure calculation. It is found that Ru${}_7$B${}_3$ belongs to an s-wave dominated single band superconductor with energy gap 0.5 meV and could be categorized into type II superconductor with weak electron-phonon coupling. Unusual 'kink' feature is clearly observed in field-broadening resistivity curves, suggesting the possible mixture of spin triplet induced by the lattice without inversion symmetry.

arXiv comment11 pages, 16 figures. submitted to Phys. Rev. B

References in corpus (18)

• Heavy fermion superconductivity and magnetic order in non-centrosymmetric $CeP{t}_{3}Si$
• Linear-response theory and lattice dynamics: a muffin-tin orbital approach
• Superconductivity at 25 K in hole doped $(L{a}_{1-x}S{r}_x)OFeAs$
• Specific Heat of Mg ^{11}B_2
• S-wave/spin-triplet order in superconductors without inversion symmetry: Li${}_2$Pd${}_3$B and Li${}_2$Pt${}_3$B
• Spin Triplet Superconducting State due to Broken Inversion Symmetry in Li_2Pt_3B
• CePt3Si: an unconventional superconductor without inversion center
• Hall effect and magnetoresistance in the normal state of the superconductor LaO${}_{0.9}$F${}_{0.1-x}$FeAs
• Upper critical field, Hall effect and magnetoresistance in the iron-based layered superconductor LaFeAsO_{0.9}F_{0.1-δ}
• Evidence for a Novel State of Superconductivity in Noncentrosymmetric CePt3Si : A 195Pt-NMR Study
• Current percolation and anisotropy in polycrystalline MgB${}_2$
• Physical properties of the noncentrosymmetric superconductor Mg_10Ir_19B_16
• Crystal Symmetry, Electron-Phonon Coupling, and Superconducting Tendencies in Li${}_2$Pd${}_3$B and Li${}_2$Pt${}_3$B
• Specific heat and electronic states of superconducting boron-doped silicon carbide
• Strong electron-phonon coupling in the rare-earth carbide superconductor La2C3
• Origin of superconductivity transition broadening in MgB2
• Nodeless Superconductivity in the Noncentrosymmetric Superconductor $M{g}_{10}I{r}_{19}{B}_{16}$
• Possible nodeless superconductivity in the noncentrosymmetric superconductor Mg_(12-delta)Ir_19B_16

Cited by in corpus (11)

• Superconductivity and spin-orbit coupling in non-centrosymmetric materials: a review
• Stability of 41 metal - boron systems at 0 GPa and 30 GPa from first principles
• Superconducting Properties of the Non-Centrosymmetric Superconductor Re6Hf
• Superconducting state in the non-centrosymmetric Mg_{9.3}Ir_{19}B_{16.7} and Mg_{10.5}Ir_{19}B_{17.1} revealed by NMR
• Rotation of the magnetic vortex lattice in Ru7B3 driven by the effects of broken time-reversal and inversion symmetry
• Electronic structure, electron-phonon coupling and superconductivity in noncentrosymmetric ThCoC2 from ab initio calculations
• Crystal growth and properties of the non-centrosymmetric superconductor, Ru7B3
• Comparative studies on unconventional superconductivity in Cr${}_3$Ru compounds with bcc and A15 structures
• Singlet-triplet mixing in the order parameter of the noncentrosymmetric superconductor Ru${}_7$B${}_3$
• Pressure study of the noncentrosymmetric 5d-electron superconductors CaMSi3 (M= Ir, Pt)
• Adherence of the rotating vortex lattice in the noncentrosymmetric superconductor Ru${}_7$B${}_3$ to the London model