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A notable characteristic of PbTaSe$_2$, a prototypical noncentrosymmetric (NCS) superconductor, is that its superconductivity can be modulated through a structural transition under hydrostatic pressure [Phys. Rev. B 95, 224508 (2017)]. Here…

The low field phase of the organic superconductor (TMTSF)2ClO4 is studied by muon spin rotation. The zero temperature limit of the magnetic penetration depth within the TMTSF layers is obtained to be lambda_{ab}(0) = 0.86(2) um. Temperature…

Superconductivity · Physics 2014-01-17 F. L. Pratt , T. Lancaster , S. J. Blundell , C. Baines

Cu$_x$Bi$_2$Se$_3$ hosts both topological surface states and bulk superconductivity. It has been identified recently as a topological superconductor (TSC) with an extraordinary nematic, i. e. C2-symmetric, superconducting state and…

Superconductivity · Physics 2019-12-17 Ran Tao , Ya-Jun Yan , Xi Liu , Zhi-Wei Wang , Yoichi Ando , Qiang-Hua Wang , Tong Zhang , Dong-Lai Feng

We have studied the superconducting properties of LaIr$_3$ with a rhombohedral structure using magnetization, heat capacity, and muon-spin rotation/relaxation ($\mu$SR) measurements. The zero-field cooled and field cooled susceptibility…

Superconductivity · Physics 2020-01-08 A. Bhattacharyya , D. T. Adroja , P. K. Biswas , Y. J. Sato , M. R. Lees , D. Aoki , A. D. Hillier

CaSb$_2$ is a bulk superconductor and a topological semimetal, making it a great platform for realizing topological superconductivity. In this work, we investigate the superconducting upper and lower critical field anisotropy using magnetic…

Superconductivity · Physics 2024-05-31 M. Oudah , Y. Cai , M. V. De Toro Sanchez , J. Bannies , M. C. Aronson , K. M. Kojima , D. A. Bonn

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…

Surface magnetism and its correlation with the electronic structure are critical to understand the gapless topological surface state in the intrinsic magnetic topological insulator MnBi$_2$Te$_4$. Here, using static and time resolved…

Materials Science · Physics 2020-09-16 D. Nevola , H. X. Li , J. -Q. Yan , R. G. Moore , H. -N. Lee , H. Miao , P. D. Johnson

Transverse-field muon spin rotation measurements in the vortex-lattice mixed state of the heavy-fermion (HF) superconductor PrOs4Sb12 yield a temperature dependence of the penetration depth indicative of an isotropic or nearly isotropic…

Strongly Correlated Electrons · Physics 2009-11-07 D. E. MacLaughlin , J. E. Sonier , R. H. Heffner , O. O. Bernal , B. -L. Young , M. S. Rose , G. D. Morris , E. D. Bauer , T. D. Lo , M. B. Maple

Superconductors with nontrivial band structure topology represent a class of materials with unconventional and potentially useful properties. Recent years have seen much success in creating artificial hybrid structures exhibiting main…

The magnetic vortex lattice (VL) of polycrystalline MgB2 has been investigated by transverse-field muon-spin-relaxation (TF-MuSR). The evolution of TF-MuSR depolarization rate, sigma, that is proportional to the second moment of the field…

Superconductivity · Physics 2009-11-07 Ch. Niedermayer , C. Bernhard , T. Holden , R. K. Kremer , K. Ahn

To trace the origin of time-reversal symmetry breaking (TRSB) in Re-based superconductors, we performed comparative muon-spin rotation/relaxation ($\mu$SR) studies of superconducting noncentrosymmetric Re$_{0.82}$Nb$_{0.18}$ ($T_c = 8.8$ K)…

The characteristics of Fe-based superconductors are manifested in their electronic, magnetic properties, and pairing symmetry of the Cooper pair, but the latter remain to be explored. Usually in these materials, superconductivity coexists…

We report superconductivity at $T_c = 1.22$ K and magnetic order at $T_N = 1.06$ K in the semi-metallic noncentrosymmetric Half Heusler compound ErPdBi. The upper critical field, $B_{c2}$, has an unusual quasi-linear temperature variation…

Superconductivity · Physics 2015-06-17 Y. Pan , A. M. Nikitin , T. V. Bay , Y. K. Huang , C. Paulsen , B. H. Yan , A. de Visser

The half-Heusler compounds YPdBi and TbPdBi, while having similar band structure, exhibit different magnetic properties. YPdBi is a diamagnet, while TbPdBi shows antiferromagnetic order below 5.5 K. Both are superconductors with…

Superconductivity · Physics 2019-01-02 S. M. A. Radmanesh , C. Martin , Yanglin Zhu , X. Yin , H. Xiao , Z. Q. Mao , L. Spinu

Appearance of strong spin-orbit coupling (SOC) is apparent in ternary equiatomic compounds with 5$d$-electrons due to the large atomic radii of transition metals. SOC plays a significant role in the emergence of unconventional…

Magnetic impurities deposited on topological superconductor candidate PbTaSe2 can introduce a non-splitting zero-energy state inside the superconducting gap, which has been proposed as a field-free platform for topological zero modes.…

The noncentrosymmetric superconductors LaPdSi3 and LaPtSi3 have been studied with magnetization, specific heat, resistivity and muon spin rotation/relaxation (muSR) measurements. These crystallize in the tetragonal BaNiSn3 structure and…

We report zero-field (ZF) and transverse-field (TF) muon-spin rotation/relaxation ($\mu$SR) measurements on superconducting Li$_{0.95}$FeAs ($T_{\rm c}\simeq16.0$ K) grown by a high-pressure self-flux method. The ZF-$\mu$SR data show no…

Superconductivity · Physics 2026-04-17 Rustem Khasanov , Hubertus Luetkens , Nikolai D. Zhigadlo

The magnetic penetration depth ($\lambda$) as a function of applied magnetic field and temperature in SrPt$_3$P($T_c\simeq8.4$ K) was studied by means of muon-spin rotation ($\mu$SR). The dependence of $\lambda^{-2}$ on temperature suggests…

Superconductivity · Physics 2015-06-19 R. Khasanov , A. Amato , P. K. Biswas , H. Luetkens , N. D. Zhigadlo , B. Batlogg

We report muon spin relaxation measurements on the superconductor Sr2RuO4 that reveal the spontaneous appearance of an internal magnetic field below the transition temperature: the appearance of such a field indicates that the…