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The linewidths of crystal field excitations in Tm0.1Y0.9Ba2Cu3O6+x a probe of the magnetic susceptibility of the CuO2 planes

โœ Scribed by R. Osborn; E.A. Goremychkin

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
167 KB
Volume
185-189
Category
Article
ISSN
0921-4534

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โœฆ Synopsis

We present high resolution inelastic neutron scattering measurements of the linewidths of crystal field transitions in Tm0.1Y0 9Ba2Cu306รทx, which are proportional to the local magnetic response of the Cue 2 planes at t'lie traiisition energies, 12 to 14 meV. There is no change in the magnitude ot the dynamm susceptibility going from x=0.1 to the normal phase of x=0.9, but a reduction with decreasing temperature starting 20K above T c indicates the formation of an energy gap in the spectrum of Cue 2 spin excitations in the superconducting phase.

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