Search for Magnetic Fluctuations in YBa2Cu3O7
作者： O Schärpf , S Kemmler-Sack , R Kiemel , W Schaefer , T Brückel
DOI: 10.1209/0295-5075/4/10/018
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摘要: To decide whether magnetic fluctuations are present in the high-temperature superconductor YBa2Cu3O7, we carried out a neutron scattering experiment, using 3-dimensional polarization analysis at temperatures between 70 K and 300 K. The total intensity within energy windows - Ω < ω for = 12 meV 25 is vanishingly small. Very severe upper bounds could be established, making couplings as source superconductivity YBa2Cu3O7 highly unlikely.
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