SINGLET GROUND-STATE MAGNETISM .2. MAGNETIC EXCITONS IN PARAMAGNETIC TBP

被引：16

作者：

LOIDL, A

KNORR, K

KJEMS, JK

LUTHI, B

机构：

[1] UNIV FRANKFURT, INST PHYS, D-6000 FRANKFURT 70, FED REP GER

[2] RISO NATL LAB, DK-4000 ROSKILDE, DENMARK

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1979年 / 35卷 / 03期

关键词：

D O I：

10.1007/BF01319845

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The magnetic Γ1 -Γ4 exciton of the singlet ground state system TbP has been studied by inelastic neutron scattering above the antiferromagnetic ordering temperature. Considerable dispersion and a pronounced splitting was found in the [100] and [110] directions. Both the band width and the splitting increased rapidly as the transition temperature was approached in accordance with the predictions of the RPA-theory. The dispersion is analysed in terms of a phenomenological model using interactions up to the fourth nearest neighbour. © 1979 Springer-Verlag.

引用

页码：253 / 259

页数：7

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