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In this communication, we report the temperature dependence (3 to 300K) of the electrical resistivity of BiS2 based layered PrO0.5F0.5BiS2 superconductor at ambient and hydrostatic pressure of up to 3GPa. It is observed that Tc increases…

Superconductivity · Physics 2013-07-19 G. Kalai Selvan , M. Kanagaraj , Rajveer Jha , V. P. S. Awana , S. Arumugam

We report the impact of hydrostatic pressure (0-1.97GPa) on superconductivity of recently discovered 2K superconductor Sr0.5La0.5FBiS2. Resistivity under pressure measurements are performed by using HPC-33 Piston type pressure cell with…

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

We measured the electrical resistivity of a BiS2-based compound EuFBiS2 under high pressure. Polycrystalline EuFBiS2 shows insulator-metal transition and pressure-induced superconductivity above 0.7 GPa. The superconducting transition…

We study the impact of hydrostatic pressure on superconductivity of new BiS2 based layered REO0.5F0.5BiS2 (RE-La, Pr, and Nd) compounds through the measurements of dc electrical resistivity. The REO0.5F0.5BiS2 (RE-La, Pr and Nd) compounds…

Superconductivity · Physics 2015-02-25 Rajveer Jha , H. Kishan , V. P. S. Awana

We report the effect of hydrostatic pressure (0-1.97GPa) on the superconductivity of BiS2 based CeO0.5F0.5BiS2 compound. The CeO0.5F0.5BiS2 superconductor was synthesized by the solid state reaction route and the compound is crystallized in…

Superconductivity · Physics 2015-06-19 Rajveer Jha , H. Kishan , V. P. S. Awana

We report the appearance of superconductivity under hydrostatic pressure (0.35 to 2.5GPa) in Sr0.5RE0.5FBiS2 with RE = Ce, Nd, Pr and Sm. The studied compounds, synthesized by solid state reaction route, are crystallized in tetragonal…

Superconductivity · Physics 2015-06-22 Rajveer Jha , Brajesh Tiwari , V. P. S. Awana

The temperature dependent electrical resistivity of single crystalline SrFe2As2 and BaFe2As2 has been measured in a liquid medium, modified Bridgman anvil cell for pressures in excess of 75 kbar. These data allow for the determination of…

Superconductivity · Physics 2015-05-13 E. Colombier , S. L. Bud'ko , N. Ni , P. C. Canfield

We present a pressure study of the electrical resistivity, AC magnetic susceptibility and powder x-ray diffraction (XRD) of the newly discovered BiS$_2$-based superconductor EuBiS$_2$F. At ambient pressure, EuBiS$_2$F shows an anomaly in…

Superconductivity · Physics 2015-06-22 C. Y. Guo , Y. Chen , M. Smidman , S. A. Chen , W. B. Jiang , H. F. Zhai , Y. F. Wang , G. H. Cao , J. M. Chen , X. Lu , H. Q. Yuan

We report impact of hydrostatic pressure on the newly discovered BiS2 based superconductors. In last couple of years the new BiS2 based superconductor attracted great attention of the condensed matter physics community. These new layered…

Superconductivity · Physics 2015-12-31 Rajveer Jha , V. P. S. Awana

The appearance of superconductivity at ambient pressures in the undoped iron pnictide parent compound SrFe2As2 is studied experimentally using several techniques and approaches to aid in understanding the nature of this phase. Low…

Superconductivity · Physics 2010-04-13 K. C. Kirshenbaum , S. R. Saha , N. P. Butch , J. D. Magill , J. Paglione

High-pressure electrical resistivity measurements up to 3.0GPa have been performed on EuFe2As2 single crystals with residual resistivity ratios RRR=7 and 15. At ambient pressure, a magnetic / structural transition related to FeAs-layers is…

Superconductivity · Physics 2015-05-19 N. Kurita , M. Kimata , K. Kodama , A. Harada , M. Tomita , H. S. Suzuki , T. Matsumoto , K. Murata , S. Uji , T. Terashima

Through the solid state reaction method, we synthesized a new BiSe2-based superconductor Sr0:5La0:5FBiSe2 with superconducting transition temperature Tc?3.8 K. A strong diamagnetic signal below Tc in susceptibility ?(T) is observed…

Superconductivity · Physics 2016-05-02 Lin Li , Yongliang Xiang , Yihong Chen , Wenhe Jiao , Chuhang Zhang , Li Zhang , Jianhui Dai , Yuke Li

We present a systematic pressure study of poly- and single crystalline SrFe2As2 by electrical resistivity and X-ray diffraction measurements. SrFe2As2 exhibits a structural phase transition from a tetragonal to an orthorhombic phase at…

In this paper, we systematically study the electron doping effect in a new BiS2-based system Sr1-xLaxFBiS2(0<x<0.7) through multiple techniques of X-ray diffraction, electrical transport, magnetic susceptibility, and Hall effect…

Superconductivity · Physics 2014-02-13 Yuke Li , Xi Lin , Lin Li , Nan Zhou , Xiaofeng Xu , Chao Cao , Jianhui Dai , Li Zhang , Yongkang Luo , Wenhe Jiao , Qian Tao , Guanghan Cao , Zhuan Xu

High pressure electrical resistance and x-ray diffraction measurements have been performed on ruthenium-doped Ba(Fe0.9Ru0.1)2As2, up to pressures of 32 GPa and down to temperatures of 10 K, using designer diamond anvils under…

Superconductivity · Physics 2014-04-15 Walter Uhoya , Georgiy M. Tsoi , Yogesh K. Vohra , Athena S. Sefat , Samuel T. Weir

The ab-plane resistivity of Ba(Fe1-xRux)2As2 (x = 0.00, 0.09, 0.16, 0.21, and 0.28) was studied under nearly hydrostatic pressures, up to 7.4 GPa, in order to explore the T-P phase diagram and to compare the combined effects of…

Superconductivity · Physics 2015-05-30 S. K. Kim , M. S. Torikachvili , E. Colombier , A. Thaler , S. L. Bud'ko , P. C. Canfield

Pressure effects on a recently discovered BiS2-based superconductor Bi2(O,F)S2 (Tc = 5.1 K) were examined via two different methods; high pressure resistivity measurement and high pressure annealing. The effects of these two methods on the…

We investigate the external hydrostatic pressure effect on the superconducting transition temperature (Tc) of new layered superconductors Bi4O4S3 and NdO0.5F0.5BiS2. Though the Tc is found to have moderate decrease from 4.8 K to 4.3 K…

Superconductivity · Physics 2013-07-18 G. Kalai Selvan , M. Kanagaraj , S. Esakki Muthu , Rajveer Jha , V. P. S. Awana , S. Arumugam

Electrical resistivity under high pressure have been measured on nominally pure SrFe2As2 up to 14 GPa. The resistivity drop appeared with increasing pressure, and we clearly observed zero resistivity. The maximum of superconducting…

Superconductivity · Physics 2009-02-10 K. Igawa , H. Okada , H. Takahashi , S. Matsuishi , Y. Kamihara , M. Hirano , H. Hosono , K. Matsubayashi , Y. Uwatoko

We report comprehensive resistivity measurements of single crystalline samples of the Ba(Fe(1-x)Co(x))2As2 high Tc superconductor under hydrostatic pressure up to 2.75 GPa and over a broad concentration range, 0 < x < 0.099. We show that…

Superconductivity · Physics 2009-06-19 K. Ahilan , F. L. Ning , T. Imai , A. S. Sefat , M. A. McGuire , B. C. Sales , D. Mandrus
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