CRITICAL SPIN DYNAMICS OF THE PLANAR 2-DIMENSIONAL COMPOUND BANI2(PO4)2

被引：2

作者：

BOUVET, A ^{[1
]}

REGNAULT, LP ^{[1
]}

ROSSATMIGNOD, J ^{[1
]}

机构：

[1] CENS, CEA, CNRS, LEON BRILLOUIN LAB, F-91191 GIF SUR YVETTE, FRANCE

来源：

PHYSICA B-CONDENSED MATTER | 1992年 / 180卷

关键词：

D O I：

10.1016/0921-4526(92)90701-S

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present recent inelastic neutron scattering results concerning the temperature and wave vector dependences of magnetic fluctuations in the quasi two-dimensional compound BaNi2(PO4)2. Our experimental data show Lorentzian profiles in energy, with fluctuation rates GAMMA jusT above T(N) reflecting the spin wave energies just below T(N). This shows that spin waves are at the origin of the phase transition, which is not of the Kosterlitz-Thouless type.

引用

页码：185 / 187

页数：3

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