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We report superconductivity in as synthesized Nb2PdSe5, which is similar to recently discovered Nb2PdS5 compound having very high upper critical field, clearly above the Pauli paramagnetic limit [Sci. Rep. 3, 1446 (2013)]. A bulk…

Superconductivity · Physics 2017-01-24 Reena Goyal , Govind Gupta , A. K. Srivastava , V. P. S. Awana

We report synthesis, structural details and complete superconducting characterization of very recently discovered Nb2PdS5 new superconductor. The synthesized compound is crystallized in mono-clinic structure. Bulk superconductivity is seen…

Superconductivity · Physics 2015-06-18 Rajveer Jha , Brajesh Tiwari , Poonam Rani , H. Kishan , V. P. S. Awana

Here, we report the discovery of superconductivity in a new transition metal-chalcogenide compound, i.e. Nb2Pd0.81S5, with a transition temperature Tc > 6.6 K. Despite its relatively low Tc, it displays remarkably high and anisotropic…

Superconductivity · Physics 2013-03-14 Q. Zhang , G. Li , D. Rhodes , A. Kiswandhi , T. Besara , B. Zeng , J. Sun , T. Siegrist , M. D. Johannes , L. Balicas

We report the synthesis and superconducting properties of a new transition-metal chalcogenide Ta$_2$PdSe$_5$. The measurements of resistivity, magnetization, and specific heat reveal that Ta$_2$PdSe$_5$ is a bulk superconductor with $T_c$…

Superconductivity · Physics 2015-10-28 J. Zhang , J. K. Dong , Y. Xu , J. Pan , L. P. He , L. J. Zhang , S. Y. Li

We report the discovery of superconductivity in noncentrosymmetric NbReSi, which crystallizes in a hexagonal ZrNiAl-type crystal structure with space group $P\bar{6}2m$ (No.~189). Bulk superconductivity, with $T_c$ = 6.5 K was characterized…

Superconductivity · Physics 2021-11-24 H. Su , T. Shang , F. Du , C. F. Chen , H. Q. Ye , X. Lu , C. Cao , M. Smidman , H. Q. Yuan

Both Nb$_3$Pd$_x$Se$_7$ and Ta$_4$Pd$_3$Te$_{16}$ crystallize in a monoclinic point group while exhibiting superconducting transition temperatures as high as $T_c\sim 3.5$ and $\sim 4.7 $ K, respectively. Disorder was claimed to lead to the…

Superconductivity · Physics 2016-09-21 Q. R. Zhang , D. Rhodes , B. Zeng , M. D. Johannes , L. Balicas

The pressure dependence of the critical temperature $T_c$ and upper critical field $H_{c2}(T)$ has been measured up to 19 GPa in the layered superconducting material 2H-NbSe$_2$. Relating the behavior of $H_{c2}(T)$ to Fermi surface…

Superconductivity · Physics 2009-11-11 H. Suderow , V. G. Tissen , J. P. Brison , J. L. Martinez , S. Vieira

We have investigated the temperature dependence of the resistive upper critical fields ($\mu_{0}H_{\rm c2}(T)$) for an Fe$_{1.05}$Te$_{0.85}$Se$_{0.15}$ single crystal, which exhibit superconductivity at $T_{\rm c} \sim 14 K, in magnetic…

Superconductivity · Physics 2010-06-28 T. Kida , M. Kotani , Y. Mizuguchi , Y. Takano , M. Hagiwara

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…

Ta2PdxS5 (x < 1.0) was found to show superconductivity at Tc ~ 6 K. The temperature dependent resistivity of single crystalline Ta2Pd0.92S5 showed that the system is strongly disordered due to Pd deficiencies and close to Anderson localized…

Superconductivity · Physics 2014-03-03 Y. F. Lu , T. Takayama , A. F. Bangura , Y. Katsura , D. Hashizume , H. Takagi

The upper critical field is a fundamental measure of the strength of superconductivity in a material. It is also a cornerstone for the realization of superconducting magnet applications. The critical field arises because of the Copper pair…

We report specific heat under different magnetic fields for recently discovered quasi-one dimensional Nb2PdS5 superconductor. The studied compound is superconducting below 6 K. Nb2PdS5 is quite robust against magnetic field with dHc/dT of…

Superconductivity · Physics 2015-06-01 Reena Goyal , Brajesh Tiwari , Rajveer Jha , V. P. S. Awana

The superconducting upper critical field $H_{c2}(T)$ of a two dimensional BCS superconductor is calculated in the vicinity of a van-Hove singularity. The zero temperature upper critical field is strongly enhanced at weak coupling when the…

Condensed Matter · Physics 2009-10-28 R. G. Dias , J. M. Wheatley

We report superconductivity in Sn$_{x}$NbSe$_{2-\delta}$, a topological nodal-line semimetal candidate with a noncentrosymmetric crystal structure. The superconducting transition temperature $T_{c}$ of this compound is extremely sensitive…

We report on the discovery of superconductivity in the previously unknown compound Ta$_4$Rh$_2$C$_{1-\delta}$. Ta$_4$Rh$_2$C$_{1-\delta}$ crystallizes in the $\eta$-carbide structure type, in the cubic space group $Fd\bar{3}m$ (No.227) with…

In the present report, we investigate various properties of the Nb2PdS5 superconductor. Scanning electron microscopy displayed slabs like laminar growth of Nb2PdS5while X-ray photoelectron spectroscopy exhibited the hybridization of Sulphur…

Superconductivity · Physics 2018-03-14 Reena Goyal , A. K. Srivastava , Monu Mishra , Govind Gupta , Rajveer Jha , V. P. S. Awana

We have performed electrical resistivity measurements of a polycrystalline sample of FeSe$_{0.25}$Te$_{0.75}$, which exhibits superconductivity at $T_{\rm c} \sim 14$ K, in magnetic fields up to 55 T to determine the upper critical field…

We investigate temperature-dependence of the upper critical fields Hc2(T) of a superconducting FeTe0.6Se0.4 single crystal by measuring resistivity in static magnetic fields up to 45 T. The observations of strong bending in the Hc2ab(T)…

Superconductivity · Physics 2010-06-14 Seunghyun Khim , Jae Wook Kim , Eun Sang Choi , Yunkyu Bang , Minoru Nohara , Hidenori Takagi , Kee Hoon Kim

The large size single crystals of (SnSe)$_{1.16}$(NbSe$_2$) misfit layered compound were grown and superconductivity with $T_c$ of 3.4 K was first discovered in this system. Powder X-ray diffraction (XRD) and high resolution transmission…

Superconductivity · Physics 2018-08-29 Hua Bai , Xiaohui Yang , Yi Liu , Meng Zhang , Mengmeng Wang , Yupeng Li , Jiang Ma , Qian Tao , Yanwu Xie , Guanghan Cao , Zhu-An Xu

NbRh$_{2}$B$_{2}$ crystallises in a chiral noncentrosymmetric structure and exhibits bulk type-II superconductivity below $7.46(5)$~K. Here we show that the temperature dependence of the upper critical field deviates from the behaviour…

Superconductivity · Physics 2019-08-21 D. A. Mayoh , M. J. Pearce , K. Götze , A. D. Hillier , G. Balakrishnan , M. R. Lees
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