Anomalous magnetic excitation on triangular lattice antiferromagnet CuFeO2

被引：21

作者：

Terada, N. ^{[1
]}

Mitsuda, S.

Oohara, Y.

Yoshizawa, H.

Takei, H.

机构：

[1] Tokyo Univ Sci, Fac Sci, Shinjuku Ku, Tokyo 1628601, Japan

[2] Univ Tokyo, Inst Solid State Phys, Neutron Scattering Lab, Tokai, Ibaraki 3191106, Japan

[3] Osaka Univ, Grad Sch Sci, Toyonaka, Osaka 560, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷

关键词：

CuFeO2; triangular lattice; frustration; inelastic neutron scattering;

D O I：

10.1016/j.jmmm.2003.12.509

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic excitation spectrum has been investigated by inelastic neutron scattering on triangular lattice antiferromagnets CuFeO2 and CuFe0.98Al0.02O2. While the normal acoustic spin-wave dispersion curve was obtained in CuFe0.98Al0.02O2; the anomalous dispersion curve with energy gap whose bottom positions do not correspond to the magnetic Bragg point for the 4-sublattice (up arrow up arrow down arrow down arrow) ground state was obtained in CuFeO2. (C) 2003 Elsevier B. . All rights reserved.

引用

页码：E997 / E998

页数：2