MAGNETIC EXCITATIONS IN A HIGHLY FRUSTRATED PYROCHLORE ANTIFERROMAGNET

被引：25

作者：

HARRIS, MJ

ZINKIN, MP

ZEISKE, T

机构：

[1] UNIV OXFORD,CLARENDON LAB,OXFORD OX1 3PU,ENGLAND

[2] HAHN MEITNER INST BERLIN GMBH,D-14109 BERLIN,GERMANY

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.52.R707

中图分类号：

T [工业技术];

学科分类号：

08 ;

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.

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页码：R707 / R710

页数：4

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