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The solid solution of antimonide-oxides Ba1-xKxTi2Sb2O (0 < x < 1) has been synthesized by solid-state reactions and characterized by X-ray powder diffraction (CeCr2Si2C-type structure; P4/mmm, Z = 1). The crystal structure consists of…

Superconductivity · Physics 2014-01-21 Ursula Pachmayr , Dirk Johrendt

We present a joint experimental and theoretical study of the superconducting phase of the layered binary silicide BaSi2. Compared with the layered AlB2 structure of graphite or diboride-like superconductors, in the hexagonal structure of…

We report synthesis, characterization, and physical properties of layered bismuth-sulfide compounds La2O2Bi3-xPb1+xS6. We synthesized a new La2O2Bi3PbS6 compound, whose crystal structure is similar to those of the La2O2Bi3AgS6…

Despite growing interest in them, highly crystalline two-dimensional superconductors derived from exfoliated layered materials are few. Employing the anisotropic Migdal-Eliashberg formalism based on {\it ab initio} calculations, we find…

Superconductivity · Physics 2020-04-01 Feipeng Zheng , Xi-Bo Li , Yiping Lin , Lingxiao Xiong , Ji Feng

We report on existence of superconductivity in YIr2Si2 and LaIr2Si2 compounds in relation to crystal structure. The two compounds crystallize in two structural polymorphs, both tetragonal. The high temperature polymorph (HTP) adopts the…

Superconductivity is observed with critical temperature $T_{c}$ = 2.0 K in self-flux-grown single crystals of $CaBi_{2}$. This material adopts the $ZrSi_{2}$ structure type with lattice parameters a = 4.696(1) $\AA$, b = 7.081(2) $\AA$ and…

The structural misfit compound (PbSe)1.16(TiSe2)2 is reported. It is a superconductor with a Tc of 2.3 K. (PbSe)1.16(TiSe2)2 derives from a parent compound, TiSe2, which shows a charge density wave transition and no superconductivity. The…

Superconductivity · Physics 2015-05-19 N. Giang , Q. Xu , Y. S. Hor , A. J. Williams , S. E. Dutton , H. W. Zandbergen , R. J. Cava

Single crystals of the Ni-doped FeAs-based superconductor SrFe2-xNixAs2 were grown using a self-flux solution method and characterized via x-ray measurements and low temperature transport, magnetization, and specific heat studies. A doping…

Superconductivity · Physics 2009-06-17 S. R. Saha , N. P. Butch , K. Kirshenbaum , Johnpierre Paglione

Rietveld analysis of the powder X-ray diffraction of a new layered oxyarsenide, LaNiOAs, which was synthesized by solid-state reactions, revealed that LaNiOAs belongs to the tetragonal ZrCuSiAs-type structure (P4/nmm) and is composed of…

Superconductivity · Physics 2008-05-29 Takumi Watanabe , Hiroshi Yanagi , Yoichi Kamihara , Toshio Kamiya , Masahiro Hirano , Hideo Hosono

We report the superconductivity of PbTaS2 single crystals with the centrosymmetric structure. The systematic measurements of magnetization, electric transport and specific heat indicate that PbTaS2 is a weakly coupled type-II superconductor…

Superconductivity · Physics 2020-05-22 J. J. Gao , J. G. Si , X. Luo , J. Yan , Z. Z. Jiang , W. Wang , C. Q. Xu , X. F. Xu , P. Tong , W. H. Song , X. B. Zhu , W. J. Lu , Y. P. Sun

Here we report the synthesis and discovery of superconductivity in a novel ternary iridium-arsenide compound BaIr2As2. The polycrystalline BaIr2As2 sample was synthesized by a high temperature and high pressure method. Crystal structural…

Superconductivity · Physics 2017-08-22 Xiao-Chuan Wang , Bin-Bin Ruan , Jia Yu , Bo-Jin Pan , Qing-Ge Mu , Tong Liu , Gen-Fu Chen , Zhi-An Ren

We report the discovery of superconductivity in the ternary aluminide Nb$_{5}$Sn$_{2}$Al, which crystallizes in the W$_{5}$Si$_{3}$-type structure with one-dimensional Nb chains along the $c$-axis. It is found that the compound has a…

Superconductivity · Physics 2019-02-12 Jifeng Wu , Bin Liu , Yanwei Cui , Hangdong Wang , Zhicheng Wang , Zhi Ren , Guanghan Cao

We report electrical and thermal transport properties of Mn-based material BaMn$_2$Bi$_2$ with ThCr$_2$Si$_2$ structure. The resistivity of the antiferromagnetic BaMn$_2$Bi$_2$ shows a metal-semiconductor transition at $\sim 80$ K with…

Strongly Correlated Electrons · Physics 2016-04-19 Kefeng Wang , C. Petrovic

We have performed powder neutron diffraction on the new superconductor, CeNi$_{0.8}$Bi$_2$ with a superconducting transtion temperature $T_\textrm{c} \sim$ 4.2 K. The structural parameters of this compound at room temperature are determined…

Superconductivity · Physics 2015-05-27 K. Kodama , S. Wakimoto , N. Igawa , S. Shamoto , H. Mizoguchi , H. Hosono

Novel structural building blocks in compounds could induce interesting physical and chemical properties. Although phosphorus tends to form very different motifs, the existence of lone pair electrons has always prevented the formation of…

Superconductivity · Physics 2022-01-13 Xing Li , Xiaohua Zhang , Aitor Bergara , Guoying Gao , Yong Liu , Guochun Yang

Density functional theory (DFT) based first-principles investigations of structural, elastic, electronic band structure, and optical properties of superconducting ternary phosphides (BaM2P2; M = Ni, Rh) have been carried out in this study.…

Materials Science · Physics 2020-04-01 Md. Maruf Mridha , S. H. Naqib

We report appearance of superconductivity at 5K in NdO0.5F0.5BiS2 and supplement the discovery [1] of the same in layered sulfide based ZrCuSiAs type compounds. The bulk polycrystalline compound is synthesized by conventional solid state…

Superconductivity · Physics 2015-06-11 Rajveer Jha , Anuj Kumar , Shiva Kumar Singh , V. P. S. Awana

We report the results of electrical resistivity, magnetic and thermodynamic measurements on polycrystalline SnSb, whose structure consists of stacks of Sb bilayers and Sn4Sb3 septuple layers along the c-axis. The material is found to be a…

Superconductivity · Physics 2018-11-16 Bin Liu , Jifeng Wu , Yanwei Cui , Hangdong Wang , Yi Liu , Zhicheng Wang , Zhi Ren , Guanghan Cao

NiBi3 polycrystals were synthesized via a solid state method. X-ray diffraction analysis shows that the main phase present in the sample corresponds to NiBi3 in a weight fraction of 96.82 % according to the refinement of the crystalline…

Ternary silicides MI(MII0.5, Si0.5)2 (MI=Sr and Ba, MII=Al and Ga) were prepared by Ar arc melting. Powder X-ray diffraction indicates that they have the AlB2-type structure, in which Si and MII atoms are arranged in honeycomb layers and MI…

Superconductivity · Physics 2009-11-07 Motoharu Imai , Kenji Nishida , Takashi Kimura , Hideaki Kitazawa , Hideki Abe , Hijiri Kito , Kenji Yoshii