Zobrazeno 1 - 10 of 35 pro vyhledávání: '"David B. Pulling"'
1
Superconductivity and magnetism in Sr2Y(Ru1−uCuu)O6 and in Ba2Gd(Ru1−uCuu)O6
Autor: A. J. Greer, John D. Dow, W. J. Kossler, Howard A. Blackstead, David B. Pulling, Dale R. Harshman, D. R. Noakes, F.Z. Chien, E. Koster, C. E. Stronach, M.K. Wu
Publikováno v: Physica C: Superconductivity and its Applications. :392-398
Muon spin rotation and electron spin resonance data on sintered samples of superconducting Sr 2 Y(Ru 1− u Cu u )O 6 and non-superconducting Ba 2 Gd(Ru 1− u Cu u )O 6 are reported, both for u =0.1. In the case of Sr 2 Y(Ru 1− u Cu u )O 6 , the S
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1aec6d8f50e0c32ca81b2904e1a0d567
https://doi.org/10.1016/s0921-4534(01)00805-x
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2
Magnetic resonance and Mössbauer studies of GdSr2Cu2RuO8
Autor: Dale R. Harshman, Howard A. Blackstead, John D. Dow, David B. Pulling, Zhifeng Ren, D. Z. Wang
Publikováno v: Physica C: Superconductivity and its Applications. :305-308
GdSr 2 Cu 2 RuO 8 superconducts at an onset temperature T c ≈45 K, and exhibits a low-field magnetic resonance, which the evidence suggests is due to magnetically ordered Cu. Since Bernhard et al. [Phys. Rev. B 59 (1999) 1409] have shown that the m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::46a66f6c7345a48aafd9cf307d3610d6
https://doi.org/10.1016/s0921-4534(01)00776-6
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3
Magnetic susceptibility and resonance studies of ordering in Ba2GdRu1−uCuuO6
Autor: Maw-Kuen Wu, David B. Pulling, D. Y. Chen, F.Z. Chien, John D. Dow, Dale R. Harshman, Howard A. Blackstead
Publikováno v: Solid State Communications. 118:355-359
Ba 2 GdRu 1− u Cu u O 6 is studied by magnetic susceptibility and resonance. Gd, Ru, and Cu all order antiferromagnetically at low temperatures: Gd orders at ≈12 K, Ru at ≈48 K, and Cu at ≈86 K. A Gd antiferromagnetic resonance is observed be
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c17fa18a8fb3819c28da2c5083cccfa9
https://doi.org/10.1016/s0038-1098(01)00124-7
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5
Observation of superconductivity inEu1.5Ce0.5Sr2Cu2TiO10
Autor: John D. Dow, David B. Pulling, Howard A. Blackstead, Israel Felner
Publikováno v: Physical Review B. 61:6303-6306
Eu{sub 2-z}Ce{sub z}Sr{sub 2}Cu{sub 2}TiO{sub x} with x{approx_equal}10 is shown to exhibit predicted superconductivity, as detected (i) by a sudden drop in surface resistance at T{sub c}{approx_equal}22 K, (ii) by vortex dissipation in an applied fi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::edb2097adf6ca37f008ce392bd3e4aaa
https://doi.org/10.1103/physrevb.61.6303
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6
Evidence of Granular Superconductivity in Pr2<-zCezSr2Cu2NbO10
Autor: David B. Pulling, H. Luo, Howard A. Blackstead, John D. Dow, Israel Felner, William B. Yelon
Publikováno v: International Journal of Modern Physics B. 12:3074-3079
Pr 2-z Ce z Sr2Cu2NbO10 (Pr222Nb10), is widely believed to not superconduct, although its homologues in which Pr is replaced by Nd, Sm, Eu, or Gd do (with Tc ≈ 28 K). On the basis of bulk resistivity, bulk diamagnetism, electron spin resonance, and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ff8e64fb1f15b305fa79507d40548901
https://doi.org/10.1142/s0217979298002076
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7
Observation of predicted superconductivity in Gd1.4Ce0.6Sr2Cu2TiO with x ≈ 10
Autor: Dan Goldschmidt, Howard A. Blackstead, John D. Dow, David B. Pulling
Publikováno v: Physics Letters A. 245:158-162
Gd2−zCezSr2Cu2TiOx with x ≈ 10 is shown to exhibit granular superconductivity (as detected both by ESR measurements demonstrating a mesoscopic Meissner effect and by the onset of vortex dissipation in an applied field H ) for z ≈ 0.6. Tc for th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c4ccc92e28ef232f76937067c96f8928
https://doi.org/10.1016/s0375-9601(98)00348-x
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8
Hole superconductivity in Nd2−Ce CuO4
Autor: Howard A. Blackstead, John D. Dow, David B. Pulling
Publikováno v: Superlattices and Microstructures. 23:1125-1129
The reclassification of Nd 2 − z Ce z CuO 4 from an electron superconductor to a hole superconductor is suggested by simple valence and electrostatics arguments: In Nd 2 − z Ce z CuO 4 , isolated Ce substituting for Nd is not an electron donor; t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eeb5dab18ac72affc6ae18ed4e67aa55
https://doi.org/10.1006/spmi.1996.0160
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9
Observation of granular superconductivity in polycrystallineSm2−xCexCuO4−y
Autor: P. Beeli, Howard A. Blackstead, A. K. Heilman, R. F. Jardim, David B. Pulling
Publikováno v: Physical Review B. 57:3683-3689
Using field-dependent (0{le}B{le}7T) noncontact rf surface-resistance measurements, we confirm the onset of granular superconductivity in the high-temperature superconductor Sm{sub 2{minus}x}Ce{sub x}CuO{sub 4{minus}y}, 0.15{le}x{le}0.18 at temperatu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e1871dfdf95c8b3635118257c3708c7
https://doi.org/10.1103/physrevb.57.3683
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10
Prediction that Cm2−Th Sr2Cu2NbO and Gd2−Ce Sr2Cu2TiO will superconduct
Autor: David B. Pulling, Ann K. Heilman, John D. Dow, Howard A. Blackstead
Publikováno v: Solid State Communications. 103:581-584
Properly fabricated and doped Cm 2− z Th z Sr 2 Cu 2 NbO x and homologues of Gd 2− z Ce z Sr 2 Cu 2 TiO x , both with x ≈ 10, are predicted to superconduct, based on the charge-reservoir oxygen model of high-temperature superconductivity. In cu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::032c880f6e547e4f94e47a41f3f9f9b1
https://doi.org/10.1016/s0038-1098(97)00228-7
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