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We report ^77Se-NMR measurements in the recent discovered K_0.8Fe_2Se_2 with the superconducting transition temperature T_c=32 K. The characteristic point of this system is that the high density of state is located in the vicinity of the…

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

We use $^{75}$As nuclear magnetic resonance (NMR) to investigate the local electronic properties of Ba(Fe$_{1-x}$Ru$_{x}$)$_2$As$_2$ ($x =$ 0.23). We find two phase transitions, to antiferromagnetism at $T_N \approx$ 60 K and to…

Superconductivity · Physics 2012-11-14 Long Ma , G. F. Ji , Jia Dai , X. R. Lu , M. J. Eom , J. S. Kim , B. Normand , Weiqiang Yu

We report results of a muon spin relaxation study of slow magnetic fluctuations in the pseudogap phase of underdoped single-crystalline YBa$_{2}$Cu$_{3}$O$_{y}$, $y = 6.77$ and 6.83. The dependence of the dynamic muon spin relaxation rate…

AuBe is a chiral, non-centrosymmetric superconductor with transition temperature $T_C$ $\simeq$ 3.25 K. The broken inversion symmetry in its crystal structure makes AuBe a possible candidate to host a mixed singlet-triplet pairing symmetry…

We have investigated the low-temperature local magnetic properties in the bulk of molten salt-flux (MSF) grown single crystals of the candidate odd-parity superconductor UTe2 by zero-field muon spin relaxation (muSR). In contrast to…

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 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

Magnetic relaxation in a type-II superconductor is simulated for a range of temperatures (T) in a simple model of 2D Josephson junction array (JJA) with finite screening. The high-T phase, that is characterised by a single time scale…

Superconductivity · Physics 2009-10-31 Mahesh Chandran

The magnetic properties of a pressure induced noncentrosymmetric heavy-fermion superconductor CeIrGe$_3$ have been investigated by muon spin relaxation ($\mu$SR), powder neutron diffraction (ND) and inelastic neutron scattering (INS)…

Strongly Correlated Electrons · Physics 2018-05-23 V. K. Anand , A. D. Hillier , D. T. Adroja , D. D. Khalyavin , P. Manuel , G. Andre , S. Rols , M. M. Koza

We report a mechanical point-contact spectroscopy study on the single crystalline NbGe$_2$ with a superconducting transition temperature $T\rm_c$ = 2.0 - 2.1 K. The differential conductance curves at 0.3 K can be well fitted by a single gap…

Superconductivity · Physics 2021-06-29 Dongting Zhang , Tian Le , Baijing Lv , Lichang Yin , Chufan Chen , Zhiyong Nie , Dajun Su , Huiqiu Yuan , Zhu-An Xu , Xin Lu

Superconducting (SC) state has spin and orbital degrees of freedom, and spin-triplet superconductivity shows multiple SC phases due to the presence of these degrees of freedom. However, the observation of spin-direction rotation occurring…

Here we report muon spin rotation (muSR) experiments on the temperature and field dependence of the effective magnetic penetration depth (lambda) in the eta-carbide-type suboxide Ti4Ir2O, a superconductor with an considerably high upper…

We present muon spin rotation measurements on superconducting Cu intercalated Bi$_2$Se$_3$, which was suggested as a realization of a topological superconductor. We observe a clear evidence of the superconducting transition below 4 K, where…

The superconducting state of the newly discovered superconductor K$_2$Cr$_3$As$_3$ with a quasi-one-dimensional crystal structure ($T_{\bf c}\sim$ 6 K) has been investigated by using magnetization and muon-spin relaxation or rotation…

We present muon spin relaxation ($\mu$SR) and specific-heat versus temperature $C(T)$ measurements on polycrystalline and single-crystal samples of the pyrochlore magnet Yb$_2$Ti$_2$O$_7$. $C(T)$ exhibits a sharp peak at a $T_\mathrm{C}$ of…

Strongly Correlated Electrons · Physics 2014-05-28 Lieh-Jeng Chang , Martin R. Lees , Isao Watanabe , Adrian D. Hillier , Yukio Yasui , Shigeki Onoda

Recently, the niobium (Nb)-doped topological insulator Bi_2Se_3, in which the finite magnetic moments of the Nb atoms are intercalated in the van der Waals gap between the Bi_2Se_3 layers, has been shown to exhibit both superconductivity…

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

Full Heusler alloys XInPd2 (X= Zr, Hf and Ti) have recently attracted significant attention owing to their symmetry-driven electronic structure and also due to the interplay between disorder and emergent ground states. Within this family,…

Superconductivity · Physics 2026-04-22 Kavita Yadav , Anoop M Divakaran , Jumpei G. Nakamura , Tsunehiro Takeuchi , K. Mukherjee

We have investigated the superconducting properties of the noncentrosymmetric superconductor LaRhSi$_{3}$ by performing magnetization, specific heat, electrical resistivity and muon spin relaxation ($\mu$SR) measurements. LaRhSi$_{3}$…

Strongly Correlated Electrons · Physics 2011-08-02 V. K. Anand , A. D. Hilier , D. T. adroja , A. Strydom , H. Michor , K. A. McEwen , B. D. Rainford