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arxiv: cond-mat/0105510 · v1 · submitted 2001-05-26 · ❄️ cond-mat.supr-con

Direct Observation of Coexistence of Ferromagnetism and Superconductivity in RuSr2(Gd0.7Ce0.3)2Cu2O10

S. Y. Chen (1 , 2) , J. Shulman (2 , 4) , Y. S. Wang (1 , D. H. Cao (2) , C. Wang (1 , Q. Y. Chen (1
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T. H. Johansen (2 5) W. K. Chu (1 C. W. Chu (1 2 3) ((1) Department of Physics University of Houston Houston TX (2) TCSUH (3) LBNL Berkeley CA (4) Joint Science Department W. M. Keck Science Center Claremont CA (5) Department of Physics University of Oslo Oslo Norway)
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classification ❄️ cond-mat.supr-con
keywords superconductivityferromagnetismcoexistcompoundscu2o10observationrusr2same
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Recent reports of the detecting of ferromagnetism and superconductivity in ruthenium-cuprates have aroused great interest. Unfortunately, whether the two antagonistic phenomena coexist in the same space in the compounds remains unresolved. By employing the magneto-optical-imaging technique, ferromagnetism and superconductivity were indeed directly observed to coexist in the same space in RuSr2(Gd0.7Ce0.3)2Cu2O10 within the experimental resolution of ~ 10 (mu)m. The observation sets a length scale limit for models proposed to account for the competition between ferromagnetism and superconductivity, especially d-wave superconductivity, in this interesting class of compounds.

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