One-dimensional antiferromagnetic coupling in the low-carrier heavy-electron system Yb4As3: The role of charge ordering

被引：83
|
作者：
Kohgi, M
Iwasa, K
Mignot, JM
Ochiai, A
Suzuki, T
机构：
[1] CEA SACLAY,LAB LEON BRILLOUIN,CEA,CNRS,F-91191 GIF SUR YVETTE,FRANCE
[2] TOHOKU UNIV,DEPT PHYS,SENDAI,MIYAGI 98077,JAPAN
[3] NIIGATA UNIV,DEPT TECHNOL,NIIGATA 95021,JAPAN
来源：
PHYSICAL REVIEW B | 1997年 / 56卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.56.R11388
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Inelastic-neutron-scattering experiments on Yb4As3 revealed the existence of low-energy spin excitations, which are characteristic of a one-dimensional Heisenberg-type antiferromagnetic coupling at low temperatures where charge ordering takes place. Superimposed on the one-dimensional spin excitations. an unusual magnetic response is also observed around the one-dimensional zone center. These results strongly suggest that the heavy-electron behavior in Yb4As3 is a unique phenomenon caused by charge ordering: it results from the fact that the compound contains doped one-dimensional 4f(1) hole chains with strong on-site f-electron correlations. [S0163-1829(97)50642-4].
引用
收藏
页码：11388 / 11391
页数：4
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