Spin magnetic susceptibility of Cu-O chains in Sr2CuO3 and SrCuO2

被引：4

作者：

Eisaki, H

Motoyama, N

Uchida, S

机构：

[1] Department of Superconductivity, University of Tokyo, Bunkyo-ku

来源：

PHYSICA C | 1997年 / 282卷

关键词：

D O I：

10.1016/S0921-4534(97)00730-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We show that the spin magnetic susceptibility of Sr2CuO3 and SrCuO2 with Cu-O chains is in excellent agreement with the theoretical calculation by Eggert, Affleck, and Takahashi on the S=1/2 antiferromagnetic Heisenberg chain. Both compounds have extraordinarily large exchange interaction energy J similar to 2200 K and reduced Neel temperature T-N < 5 K. In Sr2CuO3, a logarithmic correction, predicted by the theory, is clearly identified at low temperatures below 0.01 J similar to 20 K.

引用

页码：1323 / 1324

页数：2

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