NEEL TRANSITION AND SUBLATTICE MAGNETIZATION OF PURE AND DOPED LA2CUO4

被引：148

作者：

KEIMER, B

AHARONY, A

AUERBACH, A

BIRGENEAU, RJ

CASSANHO, A

ENDOH, Y

ERWIN, RW

KASTNER, MA

SHIRANE, G

机构：

[1] TEL AVIV UNIV, SCH PHYS & ASTRON, IL-69978 TEL AVIV, ISRAEL

[2] BOSTON UNIV, DEPT PHYS, BOSTON, MA 02215 USA

[3] TOHOKU UNIV, DEPT PHYS, SENDAI, MIYAGI 980, JAPAN

[4] NATL INST STAND & TECHNOL, GAITHERSBURG, MD 20899 USA

[5] BROOKHAVEN NATL LAB, UPTON, NY 11973 USA

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.45.7430

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have measured the sublattice magnetization of stoichiometric La2CuO4 (T(N) = 325 K) and La2Cu0.95Zn0.05O4 (T(N) = 157 K). We discuss the data for La2CuO4 and other lamellar copper oxides in terms of the quantum Heisenberg model including weak XY anisotropy and interlayer coupling. Spin-wave theory and a generalized Schwinger-boson mean-field theory are used to predict the ordered moment as a function of temperature without adjustable parameters. We also discuss the influence of different dopants on the Neel temperature and sublattice magnetization.

引用

页码：7430 / 7435

页数：6

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