Magnetic properties and spin dynamics in hole-doped S = 1 AF chain:: 89Y NMR and susceptibility in Y2-xCaxBaNiO5

被引：8

作者：

Tedoldi, F ^{[1
]}

Rigamonti, A

Brugna, C

Corti, M

Lascialfari, A

Capsoni, D

Massarotti, V

机构：

[1] Univ Pavia, Dipartimento Fis A Volta, INFM, I-27100 Pavia, Italy

[2] Univ Florence, Dept Chem, I-50144 Florence, Italy

[3] Univ Pavia, Dept Phys Chem, I-27100 Pavia, Italy

来源：

JOURNAL OF APPLIED PHYSICS | 1998年 / 83卷 / 11期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.367608

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Hole-doping effects in Haldane chain have been studied by means of magnetic susceptibility and Y-89 nuclear magnetic resonance in Y2-xCaxBaNiO5 for x = 0, x = 0.06 and x = 0.18. In nominally pure YBNO detailed information on this prototype of Haldane systems is extracted. In the charge-doped compounds the Y-89 relaxation rates indicate that holes induce low-energy excitations with an effective spectral density having a structure characterized by a narrow central peak. (C) 1998 American Institute of Physics.

引用

页码：6605 / 6607

页数：3

共 39 条

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