Magnetic interactions and electronic states in superconducting and nonsuperconducting ruthenocuprates
We measured polycrystalline samples of SrRuO3 and both superconducting and nonsuperconducting (hydrogen loaded) ruthenocuprates-Eu1.5Ce0.5RuSr2Cu2O10-x (Ru-1222)-samples using ac susceptibility, Ru 3p x-ray photoemission and Ru 2p x-ray-absorption measurements. The superconducting-and metallic-ruthenocuprate samples exhibit significant ferromagnetic fluctuations above the highest magnetic ordering temperature. The (Ru 3p) core level of the SrRuO3, and superconducting ruthenocuprate samples indicate that the (Ru) layers are metallic.
WOS:000173647000064
2002
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Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. Inst Phys, HR-10000 Zagreb, Croatia. EPFL, Inst Appl Phys, CH-1024 Lausanne, Switzerland. Univ Saskatchewan, Canadian Light Source Inc, Saskatoon, SK S7N 5C6, Canada. Canadian Synchrotron Radiat Facil, Stoughton, WI 53589 USA. Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada. Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel. USN, Res Lab, Washington, DC 20375 USA. Onellion, M, Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA.
ISI Document Delivery No.: 518BQ
054417
REVIEWED
EPFL