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The application of the muon-spin rotation/relaxation ($\mu$SR) technique for studying type-I superconductivity is discussed. In the intermediate state, i.e. when a type-I superconducting sample with non-zero demagnetization factor $N$ is…

Muon spin spectroscopy is one of the most powerful tools to investigate the microscopic properties of superconductors. In this manuscript, an overview on some of the main achievements obtained by this technique in the iron-based…

Superconductivity · Physics 2015-06-16 P. Carretta , R. De Renzi , G. Prando , S. Sanna

The Dirac semimetal PdTe$_2$ was recently reported to be a type-I superconductor with $T_c = 1.64$ K and a critical field $\mu_0H_c = 13.6$ mT. Since type-I superconductivity is unexpected for binary compounds, we have conducted muon spin…

Strongly Correlated Electrons · Physics 2019-12-11 Huaqian Leng , Jean-Christophe Orain , Alex Amato , Yingkai Huang , Anne de Visser

Topological superconductivity is an exotic phenomenon due to the symmetry-protected topological surface state, in which a quantum system has an energy gap in the bulk but supports gapless excitations confined to its boundary. Symmetries…

Superconductivity · Physics 2022-02-09 Z. H. Zhu , C. Tan , J. Zhang , P. K. Biswas , A. D. Hillier , M. X. Wang , Y. X. Yang , C. S. Chen , Z. F. Ding , S. Y. Li , L. Shu

The Dirac semimetal PdTe${}_2$ becomes superconducting at a temperature $T_{c}=1.6$~K. Thermodynamic and muon spin rotation experiments support type-I superconductivity, which is unusual for a binary compound. A key property of a type-I…

Superconductivity · Physics 2021-03-24 P. Garcia-Campos , Y. K. Huang , A. de Visser , K. Hasselbach

We report on muon spin rotation (muSR) studies of the superconducting and magnetic properties of the ternary intermetallic stannide Ca3Ir4Sn13. This material has recently been the focus of intense research activity due to a proposed…

In this short review, we attempt to give a comprehensive discussion of studies performed to date by muon-spin spectroscopy (more precisely the relaxation and rotation technique, also know as \muSR technique) on the recently discovered…

Superconductivity · Physics 2015-05-13 A. Amato , R. Khasanov , H. Luetkens , H. -H. Klauss

Noncentrosymmetric materials are promising paradigm to explore unconventional superconductivity. In particular, several Re containing noncentrosymmetric materials have attracted considerable attention due to a superconducting state with a…

Superconductivity · Physics 2022-08-17 Sajilesh K. P. , K. Motala , P. K. Meena , A. Kataria , C. Patra , A. D. Hillier , R. P. Singh

We report a muon spin relaxation ($\mu$SR) study on polycrystalline noncentrosymmetric superconductor NbGe$_2$~with the superconducting transition temperature $T_c=2.0\sim2.1$~K. Zero-field $\mu$SR~experiment indicates the absence of…

Superconductivity · Physics 2024-12-13 J. C. Jiao , K. W. Chen , A. D. Hillier , T. U. Ito , W. Higemoto , Z. Li , B. J. Lv , Z. -A. Xu , L. Shu

The superconducting properties of Sn1-xInxTe (x = 0.38 to 0.45) have been studied using magnetization and muon-spin rotation or relaxation (muSR) measurements. These measurements show that the superconducting critical temperature Tc of…

Superconductivity · Physics 2014-09-30 M. Saghir , J. A. T. Barker , G. Balakrishnan , A. D. Hillier , M. R. Lees

Superconductivity in the pseudo-binary pnictides Ru0.55Rh0.45P and Ru0.75Rh0.25As is probed by muon spin relaxation and rotation (muSR) measurements in conjuction with magnetic susceptibility, heat capacity and electrical resistivity…

Superconductivity · Physics 2019-01-30 V. K. Anand , D. T. Adroja , M. R. Lees , P. K. Biswas , A. D. Hillier , B. Lake

Noncentrosymmetric superconductors with $\alpha$-manganese structure has attracted much attention recently, after the discovery of time-reversal symmetry breaking in all the members of Re$_{6}$X (X = Ti, Hf, Zr) family. Similar to…

Superconductivity · Physics 2019-01-18 D. Singh , Sajilesh K. P. , Sourav Marik , A. D. Hillier , R. P. Singh

We report transverse-field (TF) muon spin rotation experiments on single crystals of the topological superconductor Sr$_x$Bi$_2$Se$_3$ with nominal concentrations $x=0.15$ and $0.18$ ($T_c \sim 3$ K). The TF spectra ($B= 10$ mT), measured…

Superconductivity · Physics 2018-02-14 H. Leng , D. Cherian , Y. K. Huang , J. -C. Orain , A. Amato , A. de Visser

The topologically non-trivial band structure of A15 compounds has drawn attention owing to the possible realization of topological superconductivity. Here, we report a microscopic investigation of the superconducting ground state in A15…

Noncentrosymmetric superconductors can lead to a variety of exotic properties in the superconducting state such as line nodes, multigap behavior, and time-reversal symmetry breaking. In this paper, we report the properties of the new…

Superconductivity · Physics 2020-01-08 D. Singh , Sajilesh K. P , Sourav Marik , P. K. Biswas , A. D. Hillier , R. P. Singh

We report Muon Spin Relaxation studies in weak transverse fields of the superconductivity in the metal cluster compound, Ga$\_{84}$[N(SiMe$\_{3}$)$\_{2}$]$\_{20}$-Li$\_{6}$Br$\_{2}$(thf)$\_{20}\cdot $2toluene. The temperature and field…

Strongly Correlated Electrons · Physics 2016-08-16 D. Bono , A. Schnepf , J. Hartig , H. Schnöckel , G. J. Nieuwenhuys , A. Amato , L. J. De Jongh

The superconducting behavior of the topological semimetal CaSn$_{3}$ was investigated by means of magnetotransport and muon spectroscopy $\mu$SR measurements, both providing strong evidence of nematic behavior. Magnetotransport detects an…

The superconducting properties of CaTSi3 (where T = Pt and Ir) have been investigated using muon spectroscopy. Our muon-spin relaxation results suggest that in both these superconductors time-reversal symmetry is preserved, while muon-spin…

Superconductivity · Physics 2014-09-10 R. P. Singh , A. D. Hillier , D. Chowdhury , J. A. T. Barker , D. McK. Paul , M. R. Lees , G. Balakrishnan

Superconductors with non-trivial band topology are emerging as one of the best avenues to study quantum anomalies and experimental realization of Majorana Fermions. This article reports the successful crystal growth of superconducting SnAs,…

Superconductivity · Physics 2021-10-27 M. M. Sharma , N. K. Karn , Prince Sharma , Ganesh Gurjar , S. Patnaik , V. P. S. Awana

We report muon spin relaxation and rotation ($\mu$SR) measurements on hydrothermally-grown single crystals of the tetragonal superconductor~FeS, which help to clarify the controversial magnetic state and superconducting gap symmetry of this…

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