Magnetic Exchange Interaction between Rare-Earth and Mn Ions in Multiferroic Hexagonal Manganites

被引：36

作者：

Talbayev, D. ^{[1
]}

LaForge, A. D. ^{[2
]}

Trugman, S. A. ^{[1
]}

Hur, N. ^{[3
]}

Taylor, A. J. ^{[1
]}

Averitt, R. D. ^{[1
,4
]}

Basov, D. N. ^{[2
]}

机构：

[1] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA

[2] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[3] Inha Univ, Dept Phys, Inchon 402751, South Korea

[4] Boston Univ, Dept Phys, Boston, MA 02215 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 24期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.101.247601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a study of magnetic dynamics in multiferroic hexagonal manganite HoMnO3 by far-infrared spectroscopy. The low-temperature magnetic excitation spectrum of HoMnO3 consists of magnetic-dipole transitions of Ho ions within the crystal-field split J=8 manifold and of the triangular antiferromagnetic resonance of Mn ions. We determine the effective spin Hamiltonian for the Ho ion ground state. The magnetic-field splitting of the Mn antiferromagnetic resonance allows us to measure the magnetic exchange coupling between the rare-earth and Mn ions.

引用

页数：4

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