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A detailed zero-field and transverse-field muon spin relaxation/rotation ($\mu$SR) experiemnts have been carried out on the recently discovered non-centrosymmetric superconductor W$_3$Al$_2$C to speculate about its superconducting ground…

Superconductivity · Physics 2021-05-26 R. Gupta , T. P. Ying , Y. P. Qi , H. Hosono , R. Khasanov

Two superconducting phases of Re3W have been found with different physical properties. One phase crystallizes in a non-centrosymmetric cubic (alpha-Mn) structure and has a superconducting transition temperature, Tc, of 7.8 K. The other…

Superconductivity · Physics 2012-01-05 P. K. Biswas , M. R. Lees , A. D. Hillier , R. I. Smith , W. G. Marshall , D. McK. Paul

In a superconductor that lacks inversion symmetry, the spatial part of the Cooper pair wave function has a reduced symmetry, allowing for the mixing of spin-singlet and spin-triplet Cooper pairing channels and thus providing a pathway to a…

We examine the evidence for multiband superconductivity and non s-wave pairing in the non-centrosymmetric superconductor Nb$_{0.18}$Re$_{0.82}$, using electrical transport, magnetization and specific heat measurements. In the normal state,…

We report measurements of the temperature dependence of the magnetic penetration depth \lambda(T) in non-centrosymmetric superconductor Re_3W. We employed two experimental techniques: extraction of \lambda(T) from magnetic {\em…

We compare the low-temperature electronic properties of the centrosymmetric (CS) and non-centrosymmetric (NCS) phases of Re3W using muon-spin spectroscopy and heat capacity measurements. The zero-field muSR results indicate that…

Superconductivity · Physics 2012-04-09 P. K. Biswas , A. D. Hillier , M. R. Lees , D. McK. Paul

We report on a microscopic study of the noncentrosymmetric superconductor W$_3$Al$_2$C (with $T_c$ = 7.6 K), mostly by means of $^{27}$Al- and $^{13}$C nuclear magnetic resonance (NMR). Since in this material the density of states at the…

Superconductivity · Physics 2022-03-10 D. Tay , T. Shang , Y. P. Qi , T. P. Ying , H. Hosono , H-R. Ott , T. Shiroka

The class of unconventional superconductors, particularly noncentrosymmetric superconductors, has been highly considered as potential materials for understanding the complex properties of quantum materials. Here, five previously unreported…

Electrical resistivity, specific heat and NMR measurements classify non-centrosymmetric $\rm Mo_3Al_2C$ ($\beta$-Mn type, space group $P4_132$) as a strong-coupled superconductor with $T_c = 9$~K deviating notably from BCS-like behaviour.…

Superconducting crystals with lack of inversion symmetry can potentially host unconventional pairing. However, till date, no direct conclusive experimental evidence of such unconventional order parameters in non-centrosymmetric…

Superconductivity in materials whose crystal structure lacks inversion symmetry is a prime candidate for unconventional superconductivity. A new noncentrosymmetric compound Zr$_{3}$Ir crystallizes in a tetragonal $ \alpha $-V$_{3} $S…

Superconductivity · Physics 2019-10-08 Sajilesh. K. P. , D. Singh , P. K. Biswas , Gavin B. G. Stenning , A. D. Hillier , R. P. Singh

Superconductivity in noncentrosymmetric compounds has attracted sustained interest in the last decades. Here we present a detailed study on the transport, thermodynamic properties and the band structure of the noncentrosymmetric…

Superconductivity · Physics 2018-01-16 B. Li , C. Q. Xu , W. Zhou , W. H. Jiao , R. Sankar , F. M. Zhang , H. H. Hou , X. F. Jiang , B. Qian , B. Chen , A. F. Bangura , Xiaofeng Xu

Non-centrosymmetric superconductors have emerged as a fascinating avenue for exploring unconventional superconductivity. Their broken inversion and time-reversal symmetries make them prime candidates for realizing the intrinsic…

Superconductivity · Physics 2025-06-17 R. K. Kushwaha , Arushi , S. Jangid , P. K. Meena , R. Stewart , A. D. Hillier , R. P. Singh

The synthesis and detailed characterization of the noncentrosymmetric superconductor Re$_{6}$Hf using powder x-ray diffraction (XRD), magnetization, transport and thermodynamic measurements are reported. XRD confirms the crystal structure…

Superconductivity · Physics 2016-08-31 D. Singh , A. D. Hillier , A. Thamizhavel , R. P. Singh

We have investigated the superconducting state of the non-centrosymmetric compound Re6Zr using magnetization, heat capacity, and muon-spin relaxation/rotation (muSR) measurements. Re6Zr has a superconducting transition temperature, Tc =…

The properties of the noncentrosymmetric superconductor ($\alpha$-$\textit{Mn}$ structure) Nb$_{0.5}$Os$_{0.5}$ is investigated using resistivity, magnetization, specific heat, and muon spin relaxation and rotation ($\mu$SR) measurements.…

Superconductivity · Physics 2018-02-14 D. Singh , J. A. T. Barker , A. Thamizhavel , A. D. Hillier , D. McK. Paul , R. P. Singh

We performed $^{185/187}$Re nuclear quadrupole resonance (NQR) measurements under pressure to investigate the superconducting properties of noncentrosymmetric superconductor Cd$_{2}$Re$_{2}$O$_{7}$ under various crystal structures. The…

A lack of spatial inversion symmetry gives rise to a variety of unconventional physics, from noncollinear order and Skyrmion lattice phases in magnetic materials to topologically-protected surface states in certain band insulators, to…

Materials Science · Physics 2018-10-24 Darren C. Peets , Tianping Ying , Xiaoping Shen , Yunjie Yu , Maxim Avdeev , Shiyan Li , Donglai Feng

We report a comprehensive study of the centrosymmetric Re$_3$B and noncentrosymmetric Re$_7$B$_3$ superconductors. At a macroscopic level, their bulk superconductivity (SC), with $T_c$ = 5.1 K (Re$_3$B) and 3.3 K (Re$_7$B$_3$), was…

Superconductivity · Physics 2021-05-31 T. Shang , W. Xie , J. Z. Zhao , Y. Chen , D. J. Gawryluk , M. Medarde , M. Shi , H. Q. Yuan , E. Pomjakushina , T. Shiroka

We systematically investigate the normal and superconducting properties of non-centrosymmetric Re$_{6}$Zr using magnetization, heat capacity, and electrical resistivity measurements. Resistivity measurements indicate Re$_{6}$Zr has poor…

Superconductivity · Physics 2017-09-06 D. A. Mayoh , J. A. T. Barker , R. P. Singh , G. Balakrishnan , D. McK. Paul , M. R. Lees
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