Journal ArticleDOI
The effect of Cu/M (M=Mn,Co,Ni,Zn) substitution upon superconductivity in Nd1.85Ce0.15CuO4
TLDR
In this article, the structural chemistry, AC susceptibility, and resistivity measurements of Nd1.85Ce0.15(Cu1-xMx)O4 where Cu/M substitution reduced superconductivity with an initial rate of -4.5 K/mol.Abstract:
The authors report on the structural chemistry, AC susceptibility, and resistivity measurements of Nd1.85Ce0.15(Cu1-xMx)O4 where Cu/M substitution reduces superconductivity with an initial rate of -4.5 K/mol.% Zn while 1% Co or Ni suppresses superconductivity below 4.2 K.read more
Citations
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Superconductivity of La2−ySryCu1−xNixO4+δ (y = 0.1, 0.2; 0⩽x⩽0.5) The hole-compensating effect of Ni
V. Bhat,C. N. R. Rao,J. M Honig +2 more
TL;DR: The assumption that nickel is in the 3+ state satisfactorily explains the reduction in hole concentration, a right-shift of the T c versus y curve with x, and the low magnetic moment carried by Ni atoms in the La 2−y Sr y Cu 1−x Ni x O 4+δ system.
Journal ArticleDOI
Magnetic correlations and disorder in a two-dimensional fermi liquid: Possible important effects for high-Tc superconductors
TL;DR: In this paper, the influence of magnetic correlations and disorder in a two-dimensional Fermi liquid is considered in connection with the occurrence of the superconducting state, and the electronic mass enhancement has been calculated taking into consideration the magnetic correlation effects and disorder.
Journal ArticleDOI
Effect on superconductivity of high valence ions V4+ and Ni3+ substitution for Cu site in Pr1.85Ce0.15CuO4−δ system
TL;DR: In this article, the effects of high valence ions V 4+ and Ni 3+ substitution on superconductivity were studied systematically for the electron-doped superconducting Pr 1.85 Ce 0.15 CuO 4− δ (PCCO) system.
References
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Journal ArticleDOI
A superconducting copper oxide compound with electrons as the charge carriers
TL;DR: In this paper, a family of superconducting copper oxides in which the carriers are electrons was discovered, with the formula Ln2−xCexCuO4−y, where Ln stands for lanthanides Pr, Nd or Sm.
Journal ArticleDOI
Magnetic and superconducting properties of the electron-doped compounds Ln2−xMxCuO4−y (Ln = Pr, Nd, Sm, Eu, Gd: M = Ce, Th)
C. L. Seaman,N.Y. Ayoub,Thomas Bjørnholm,E. A. Early,S. Ghamaty,Bo Wha Lee,John T. Markert,John J. Neumeier,P.K. Tsai,M. B. Maple +9 more
TL;DR: In this paper, the variations in transport and magnetic properties as a function of annealing conditions are discussed for the Ln 2−x M x CuO 4−y compounds.
Journal ArticleDOI
Electron-doped high Tc superconductors
TL;DR: The electron-doped materials have the chemical formula Ln2-xMxCuO4-y and exhibit superconductivity with superconducting critical temperatures Tc as high as ~25 K for x ≈ 0.15 and y ≍ 0.02 as mentioned in this paper.
Journal ArticleDOI
Phase separation in Nd2_xCexCuO4 evidence for superconductivity at a single composition
Philip Lightfoot,D.R. Richards,Bogdan Dabrowski,D. G. Hinks,Shiyou Pei,D.T. Marx,A. W. Mitchell,Y. Zheng,James D. Jorgensen +8 more
TL;DR: A series of samples with bulk compositions Nd 2-χ Ce χ CuO 4, 0≤χ≤0.25, have been examined by pulsed neutron and high-resolution synchrotron X-ray diffraction as mentioned in this paper.
Journal ArticleDOI
Anisotropic and thermally activated resistive behavior in Nd1.85Ce0.15CuO4- delta.
Minoru Suzuki,Makoto Hikita +1 more
TL;DR: An anisotropic-field-induced resistive transition has been measured for highly {ital c}-axis-oriented Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4{minus}{delta}} thin films as a function of a magnetic field parallel and perpendicular to the {italc} axis.
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Effect of Zn, Ga and Ni substitution on the superconducting properties of the electron doped system Nd-Ce-Cu-O
Israel Felner,D. Hechel,U. Yaron +2 more