New magnetic coherence effect in superconducting La_{2-x}Sr_{x}CuO_{4}

A. Schroder (Risoe National Lab); G. Aeppli (NEC Research); H.A. Mook (Oak Ridge); S.M. Hayden (University of Bristol); T.E. Mason (University of Toronto)

arxiv: cond-mat/9606084 · v2 · submitted 1996-06-12 · ❄️ cond-mat

New magnetic coherence effect in superconducting La_(2-x)Sr_(x)CuO₄

T.E. Mason (University of Toronto) , A. Schroder (Risoe National Lab) , G. Aeppli (NEC Research) , H.A. Mook (Oak Ridge) , S.M. Hayden (University of Bristol) This is my paper

classification ❄️ cond-mat

keywords magneticcoherenceenergyresponsescatteringsuperconductingaboveaccompanied

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We have used inelastic neutron scattering to examine the magnetic fluctuations at intermediate frequencies in the simplest high temperature superconductor, La_{2-x}Sr_{x}Cu_{4}. The suppression of the low energy magnetic response in the superconducting state is accompanied by an increase in the response at higher energies. Just above a threshold energy of ~7 meV there is additional scattering present below T_{c} which is characterised by an extraordinarily long coherence length, in excess of 50 \AA.

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New magnetic coherence effect in superconducting La_(2-x)Sr_(x)CuO₄

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