Absolute measurements of the high-frequency magnetic dynamics in high-{Tc} superconductors | Zendy

S. M. Hayden | Zendy; G. Aeppli | Zendy; Pengcheng Dai | Zendy; H. A. Mook | Zendy; T. G. Perring | Zendy; S.-W. Cheong | Zendy; Z. Fisk | Zendy; Fatih Doğan | Zendy; T. E. Mason | Zendy

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Absolute measurements of the high-frequency magnetic dynamics in high-{Tc} superconductors

Author(s) -

S. M. Hayden,

G. Aeppli,

Pengcheng Dai,

H. A. Mook,

T. G. Perring,

S.-W. Cheong,

Z. Fisk,

Fatih Doğan,

T. E. Mason

Publication year - 1997

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/554760

Subject(s) - superconductivity , antiferromagnetism , spallation , condensed matter physics , physics , intensity (physics) , spins , high temperature superconductivity , materials science , nuclear physics , optics , neutron

The authors review recent measurements of the high-frequency dynamic magnetic susceptibility in the high-T{sub c} superconducting systems La{sub 2{minus}x}Sr{sub x}CuO{sub 4} and YBa{sub 2}Cu{sub 3}O{sub 6+x}. Experiments were performed using the chopper spectrometers HET and MARI at the ISIS spallation source. The authors have placed their measurements on an absolute intensity scale, this allows systematic trends to be seen and comparisons with theory to be made. They find that the insulating S = 1/2 antiferromagnetic parent compounds show a dramatic renormalization in the spin wave intensity. The effect of doping on the response is to cause broadenings in wave vector and large redistributions of spectral weight in frequency

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