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Recent renewal of the highest transition temperature in a conventional superconductor of the sulfer hydride attracts much attention to exploring simple compounds with the lighter elements, situated in unconventional conditions. We report…

Materials Science · Physics 2022-05-11 K. Yoshimatsu , O. Sakata , A. Ohtomo

Crystalline two-dimensional (2D) superconductors with low carrier density are an exciting new class of materials in which superconductivity coexists with strong interactions, the effects of complex topology are not obscured by disorder, and…

We investigate the evolution of superconducting properties by doping non-magnetic impurity in single crystals of YNi2-xPtxB2C (x=0-0.2). With increasing Pt doping the critical temperature (Tc) monotonically decreases from 15.85K and…

Superconductivity · Physics 2009-10-11 Sourin Mukhopadhyay , Goutam Sheet , A. K. Nigam , Pratap Raychaudhuri , H. Takeya

A hydrostatic pressure study was made on pure and Rh-doped specimens of the superconducting ferromagnetic compounds Ru1-xRhxSr2GdCu2O8 (x = 0-0.15) by means of measurement of electrical resistivity vs temperature, in pressures up to 2 GPa.…

Superconductivity · Physics 2007-05-23 M. Steiger , C. Kongmark , F. Rueckert , L. Harding , M. S. Torikachvili

Resistivity, thermoelectric power and heat capacity are investigated in the ferromagnetic superconductor RuSr2GdCu2O8 with and without Zn substitution. The thermodynamic signatures of the ordering of the Ru moments and the paramagnetic Gd…

Superconductivity · Physics 2007-05-23 J. L. Tallon , J. W. Loram , G. V. M. Williams , C. Bernhard

By means of high-pressure resistivity measurements on single crystals, we investigate the charge transport properties of Cu$_x$PdTe$_2$, notable for the combination of topological type-II Dirac semimetallic properties with superconductivity…

Superconductivity · Physics 2021-06-11 H. Yang , M. K. Hooda , C. S. Yadav , D. Hrabovsky , A. Gauzzi , Y. Klein

The single crystal of ThCr2Si2-type BaPd2As2 was successfully prepared by a self-flux method, and the crystal structure was characterized by X-ray diffraction method with the lattice parameters a = 4.489(2) {\AA} and c = 10.322(3) {\AA}.…

Superconductivity · Physics 2016-02-17 Qi Guo , Jia Yu , Bin-Bin Ruan , Dong-Yun Chen , Xiao-Chuan Wang , Qing-Ge Mu , Bo-Jin Pan , Gen-Fu Chen , Zhi-An Ren

Polycrystalline sample of the new layered superconductor Bi4O4S3 is successfully synthesized by solid-state reaction method by using Bi, S and Bi2O3 powders with one step reaction. The superconducting transition temperature (Tconset=4.5 K),…

Superconductivity · Physics 2012-10-09 S. G. Tan , L. J. Li , Y. Liu , P. Tong , B. C. Zhao , W. J. Lu , Y. P. Sun

The Dirac semimetal PdTe$_2$ was recently reported to be a type-I superconductor ($T_c = $1.64 K, $\mu_0 H_c (0) = 13.6$ mT) with unusual superconductivity of the surface sheath. We here report a high-pressure study, $p \leq 2.5$ GPa, of…

Superconductivity · Physics 2019-12-09 H. Leng , A. Ohmura , L. N. Anh , F. Ishikawa , T. Naka , Y. K. Huang , A. de Visser

Neutron scattering from high-quality YBa2Cu3O6.33 (YBCO6.33) single crystals with a Tc of 8.4 K shows no evidence of a coexistence of superconductivity with long-range antiferromagnetic order at this very low, near-critical doping of…

The recent discovery of superconductivity in the quasi-one-dimensional compound K$_2$Cr$_3$As$_3$, which consists of double-walled tubes of [(Cr$_3$As$_3$)$^{2-}]^\infty$ that run along the c axis, has attracted immediate attention as a…

Strongly Correlated Electrons · Physics 2015-06-16 G. M. Pang , M. Smidman , W. B. Jiang , J. K. Bao , Z. F. Weng , Y. F. Wang , L. Jiao , J. L. Zhang , G. H. Cao , H. Q. Yuan

The effect of radiation-induced disordering in a nuclear reactor (fast neutrons fluence \Phi = 5\cdot10^{19} cm^2, T_{\text{irr}} = 340 K) on resistivity \rho, superconducting transition temperature T_C and upper critical field H_{C_2} of…

Superconductivity · Physics 2007-05-23 A. Karkin , B. Goshchitskii , E. Kurmaev , Z. A. Ren , G. C. Che

In this paper we present a penetration depth study on the newly discovered superconductors Li$_2$Pd$_3$B and Li$_2$Pt$_3$B. Surprisingly, the low-temperature penetration depth $f(T)$ demonstrates distinct behavior in these two isostructural…

Superconductivity · Physics 2009-11-11 H. Q. Yuan , D. Vandervelde , M. B. Salamon , P. Badica , K. Togano

Recently, an extremely high superconducting temperature (Tc) of ~200 K has been reported in the sulfur hydride system above 100 GPa. This result is supported by theoretical predictions and verified experimentally. The crystal structure of…

Discovery of superconductivity at megabar (MB) pressures in hydrogen sulfide H3S, then in metal polyhydrides, starting with binary, LaH10, etc., and ending with ternary ones, including (La, Y)H10, revolutionized the field of condensed…

Pressure-dependent transport measurements of Ir$_{1-x}$Pt$_x$Te$_2$ are reported. With increasing pressure, the structural phase transition at high temperatures is enhanced while its superconducting transition at low temperatures is…

Strongly Correlated Electrons · Physics 2013-04-18 A. Kiswandhi , J. S. Brooks , H. B. Cao , J. Q. Yan , D. Mandrus , Z. Jiang , H. D. Zhou

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

By investigating the bulk superconducting state via dc magnetization measurements, we have discovered a common resurgence of the superconductive transition temperatures (Tcs) of the monolayer Bi2Sr2CuO6+{\delta} (Bi2201) and bilayer…

Superconductivity · Physics 2019-01-30 Liangzi Deng , Yongping Zheng , Zheng Wu , Shuyuan Huyan , Hung-Cheng Wu , Yifan Nie , Kyeongjae Cho , Ching-Wu Chu

The structural, elastic, and electronic properties of the very recently discovered ternary silicide superconductor, Li2IrSi3, have been calculated using ab-initio technique. We have carried out the plane-wave pseudopotential approach within…

Superconductivity · Physics 2015-05-12 M. A. Hadi , M. A. Alam , M. Roknuzzaman , M. T. Nasir , A. K. M. A. Islam , S. H. Naqib

Electrical resistivity, magnetic susceptibility, and specific heat measurements on single crystals of La$Tr_2$Al$_{20}$ with $Tr$ = Mo and W revealed that these compounds exhibit superconductivity with transition temperatures $T_c$ = 3.22…

Superconductivity · Physics 2020-09-30 Rumika Miyawaki , Naoki Nakamura , Ryuji Higashinaka , Tatsuma D. Matsuda , Yuji Aoki