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24 April 2024

» arxiv » cond-mat/9901084

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Coexistence of ferromagnetism and superconductivity in the hybrid ruthenate-cuprate compound RuSr_2GdCu_2O_8 studied by muon spin rotation (mu SR) and DC-magnetization
C. Bernhard ; J.L. Tallon ; Ch. Niedermayer ; Th. Blasius ; A. Golnik ; E. Brücher ; R.K. Kremer ; D.R. Noakes ; C.E. Stronach ; E.J. Ansaldo ;
Date:	11 Dec 1998
Subject:	Superconductivity; Strongly Correlated Electrons \| cond-mat.supr-con cond-mat.str-el
Abstract:	We have investigated the magnetic and the superconducting properties of the hybrid ruthenate-cuprate compound RuSr_{2}GdCu_{2}O_{8} by means of zero-field muon spin rotation- (ZF-$mu $SR) and DC magnetization measurements. The DC-magnetisation data establish that this material exhibits ferromagnetic order of the Ru-moments ($mu (Ru) approx 1 mu_{B}$) below T_{Curie} = 133 K and becomes superconducting at a much lower temperature T_c = 16 K. The ZF-$mu $SR experiments indicate that the ferromagnetic phase is homogeneous on a microscopic scale and accounts for most of the sample volume. They also suggest that the magnetic order is not significantly modified at the onset of superconductivity.
Source:	arXiv, cond-mat/9901084
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