G
G. W. Hull
Researcher at Telcordia Technologies
Publications - 50
Citations - 4685
G. W. Hull is an academic researcher from Telcordia Technologies. The author has contributed to research in topics: Superconductivity & Meissner effect. The author has an hindex of 27, co-authored 50 publications receiving 4642 citations.
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Journal ArticleDOI
Structural and physical properties of the metal (M) substituted YBa2Cu3-xMxO7-y perovskite.
Jean-Marie Tarascon,P. Barboux,P. F. Miceli,Laura Greene,G. W. Hull,M. Eibschütz,Steven A. Sunshine +6 more
TL;DR: In this paper, the origin of the orthorhombic-tetragonal transition and the importance of the Cu-O chains for superconductivity is discussed. But the behavior of these materials with respect to magnetic impurities is apparently different from conventional Bardeen-Cooper-Schrieffer-type superconductors, and any new mechanism proposed must be mostly sensitive to local structural disorder.
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Crystal substructure and physical properties of the superconducting phase Bi4(Sr,Cr)6Cu4O16+x.
Jean-Marie Tarascon,Y. Le Page,P. Barboux,B. G. Bagley,Laura Greene,W. R. McKinnon,G. W. Hull,M. Giroud,D. M. Hwang +8 more
TL;DR: A high-T/sub c/ phase in the Bi-Sr-Ca-Cu-O system of composition with similarities to both the oxygen-defect perovskites YBa/sub 2/Cu/sub 3/O/sub 7/..sqrt../sub x/ is isolated and the Meissner effect is due to a superconducting transition.
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Oxygen and rare-earth doping of the 90-K superconducting perovskite YBa2Cu3O7-x.
TL;DR: Structural, magnetic and electronic properties of compounds in the series RBa/sub 2/Cu/sub 3/O/sub 7-//sub x/ (R = Nd,Sm,..., and Lu) were studied and it was shown that changes in oxygen content in these materials drastically affect their physical properties.
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Preparation, structure, and properties of the superconducting compound series Bi 2 Sr 2 Ca n-1 Cu n O y with n=1, 2, and 3
J. M. Tarascon,W. R. McKinnon,Philippe Barboux,D. M. Hwang,B. G. Bagley,Laura Greene,G. W. Hull,Y. LePage,N. G. Stoffel,M. Giroud +9 more
TL;DR: Transmission electron microscopy shows there are stacking faults within the crystals in agreement with the x-ray data and its analysis, and Resistivity, ac susceptibility and dc magnetization measurements demonstrate superconductivity in the n = 1, 2, and 3 phases at 10, 85, and 110 K respectively.
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Superconductivity at 40 K in the Oxygen-Defect Perovskites La2-xSrxCuO4-y
TL;DR: Structural, magnetic, and electronic properties of compounds in the series La2-xSrx CuO4-y for 0.05 ≤ x ≤ 1.1, with δx = 0.025, revealed superconductivity among several members of the series.