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相关论文: Two-gap superconductivity in Lu$_2$Fe$_3$Si$_5$: a…

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Transverse-field muon spin relaxation rates in single crystals of the heavy-fermion superconductor PrOs4Sb12 (Tc = 1.85 K) are nearly constant in the vortex state for temperatures below ~0.5Tc. This suggests that the superconducting…

A newly discovered family of high-Tc Fe-based superconductors, AeAFe4As4 (Ae = Ca, Sr, Eu and A = K, Rb, Cs), offers further opportunities to understand unconventional superconductivity in these materials. In this Rapid Communication, we…

超导电性 · 物理学 2017-04-26 P. K. Biswas , A. Iyo , Y. Yoshida , H. Eisaki , K. Kawashima , A. D. Hillier

A muon-spin relaxation (muSR) investigation is presented for the molecular superconductor kappa-(BEDT-TTF)2Cu[N(CN)2Br]. Evidence is found for low-temperature phase-separation, with only a fraction of the sample showing a superconducting…

超导电性 · 物理学 2015-05-19 T. Lancaster , S. J. Blundell , F. L. Pratt , J. A. Schlueter

Measurements of the magnetic field penetration depth \lambda in the pyrochlore superconductor RbOs_2O_6 (T_c\simeq6.3 K) were carried out by means of the muon-spin-rotation (\muSR) technique. At low temperatures \lambda^{-2}(T) saturates…

We present muon spin rotation ($\mu$SR) measurements on the noncentrosymmetric superconductor PbTaSe$_2$. From measurements in an applied transverse field between $H_{c1}$ and $H_{c2}$, we extract the superfluid density as a function of…

超导电性 · 物理学 2017-06-14 M. N. Wilson , A. M. Hallas , Y. Cai , S. Guo , Z. Gong , R. Sankar , F. C. Chou , Y. J. Uemura , G. M. Luke

Muon spin rotation (muSR) experiments were performed on the intercalated graphite CaC6 in the normal and superconducting state down to 20 mK. In addition, AC magnetization measurements were carried out resulting in an anisotropic upper…

超导电性 · 物理学 2011-08-29 F. Murányi , M. Bendele , R. Khasanov , Z. Guguchia , A. Shengelaya , C. Baines , H. Keller

The in-plane magnetic field penetration depth (\lambda_{ab}) in single-crystal La_{1.83}Sr_{0.17}CuO_4 was investigated by means of the muon-spin rotation (\muSR) technique. The temperature dependence of \lambda^{-2}_{ab} has an inflection…

The anisotropy and temperature dependence of the magnetic field penetration depth in the iron-based superconductor KFe$_2$As$_2$ have been measured down to 20 mK by means of muon spin rotation. We have observed that the flux-line lattice…

The magnetic penetration depth as a function of temperature in Bi4O4S3 was studied by muon-spin-spectroscopy measurements. The superfluid density of Bi4O4S3 is found to be very low. The dependence of penetration depth on temperature…

超导电性 · 物理学 2014-02-10 P. K. Biswas , A. Amato , C. Baines , R. Khasanov , H. Luetkens , Hechang Lei , C. Petrovic , E. Morenzoni

We report the results of a muon-spin rotation ($\mu$SR) experiment to determine the superconducting ground state of the iron-based superconductor CsCa$_2$Fe$_4$As$_4$F$_2$ with $T_{\rm c} \approx 28.3\,$K. This compound is related to the…

The recent discovery of the topologically protected surface states in the beta-phase of PdBi2 has reignited the research interest in this class of superconductors. Here, we show results of our muon spin relaxation and rotation (muSR)…

Magnetic susceptibility, M-H plot, magnetoresistance and thermoelectric power of the RuSr2Eu1.5Ce0.5Cu2O10 superconductor are measured. Values of the magnetic transition temperature Tmag, superconductivity transition temperature Tc, upper…

超导电性 · 物理学 2009-11-11 R. Lal , V. P. S. Awana , H. Kishan , Rajeev Rawat , V. Ganesan , A. V. Narlikar , M. Peurla , R. Laiho

We report a study of the noncentrosymmetric TaReSi superconductor by means of muon-spin rotation and relaxation ($\mu$SR) technique, complemented by electronic band-structure calculations. Its superconductivity, with $T_c$ = 5.5 K and upper…

Identifying the superconducting (SC) gap structure of the iron-based high-temperature superconductors (Fe-HTS's) remains a key issue for the understanding of superconductivity in these materials. In contrast to other unconventional…

The thermal transport measurements have been made on the Fe-based superconductor Lu2Fe3Si5 (Tc ~ 6 K) down to a very low temperature Tc/120. The field and temperature dependences of the thermal conductivity confirm the multigap…

超导电性 · 物理学 2015-05-19 Y. Machida , S. Sakai , K. Izawa , H. Okuyama , T. Watanabe

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…

In a recent article Tran et al. [Phys. Rev.B 78, 172505 (2008)] report on the result of the muon-spin rotation (\muSR) measurements of Mo_3Sb_7 superconductor. Based on the analysis of the temperature and the magnetic field dependence of…

超导电性 · 物理学 2015-05-13 R. Khasanov , P. W. Klamut , A. Shengelaya , I. M. Savić , C. Baines , H. Keller

The thermal conductivity of organic superconductor kappa-(BEDT-TTF)2Cu(NCS)2 (Tc =10.4 K) has been studied in a magnetic field rotating within the 2D superconducting planes with high alignment precision. At low temperatures (T < 0.5 K), a…

超导电性 · 物理学 2009-11-07 Koichi Izawa , Hidemasa Yamaguchi , Takahiko Sasaki , Yuji Matsuda

With the advent of Fe-As based superconductivity it has become important to study how superconductivity manifests itself in details of 57Fe Mossbauer spectroscopy of conventional, Fe - bearing superconductors. To this end, the iron-based…

材料科学 · 物理学 2015-08-07 Xiaoming Ma , Sheng Ran , Hua Pang , Fashen Li , Paul C. Canfield , Sergey L. Bud'ko

The pressure dependence of the magnetic penetration depth in polycrystalline samples of YBa2Cu3Ox with different oxygen concentrations x = 6.45, 6.6, 6.8, and 6.98 was studied by muon spin rotation (muSR). The pressure dependence of the…

超导电性 · 物理学 2015-05-28 A. Maisuradze , A. Shengelaya , A. Amato , E. Pomjakushina , H. Keller