MAGNETIC EXCITATIONS IN A HIGHLY FRUSTRATED PYROCHLORE ANTIFERROMAGNET

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关键词: KAGOME ANTIFERROMAGNET;    NEUTRON-DIFFRACTION;    RANGE ORDER;    TB2MO2O7;   

DOI  :  10.1103/PhysRevB.52.R707

来源: SCIE

【 摘 要 】

Spins that are coupled antiferromagnetically on the pyrochlore lattice are exposed to a high degree of geometrical frustration, resulting in the general absence of long-range order at all temperatures. We have investigated the inelastic response of the pyrochlore CsNiCrF6 using neutron scattering. At positions where strong magnetic diffuse scattering has been observed we find a strong elastic signal, together with an unusual wing of inelastic scattering that is present even below the spin-glass transition of CsNiCrF6. This indicates that while some of the magnetic fluctuations are being frozen out, others persist on a scale well in excess of the apparent spin-freezing temperature.

【 授权许可】

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