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Field-induced orbital and magnetic phases in Ca3Ru2O7 -: art. no. 167205

被引：41
作者：
Karpus, JF
Gupta, R
Barath, H
Cooper, SL
Cao, G
机构：
[1] Univ Illinois, Dept Phys, Urbana, IL 61801 USA
[2] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA
[3] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA
来源：
PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 16期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.93.167205
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Magnetic-field- and temperature-dependent Raman scattering studies of Ca3Ru2O7 reveal dramatic field-dependent properties arising from transitions between various complex orbital and magnetic phases, including a field-induced orbital-ordered to orbital-disordered transition (H(o)parallel to hard axis), and a reentrant orbital-ordered to orbital-disordered to orbital-ordered transition (H(o)parallel to easy axis). We find that the dramatic magnetic-field properties are most prevalent in a "mixed"-magnetic and -orbital phase regime, providing evidence for a strong connection between orbital phase inhomogeneity and "colossal" field effects in the ruthenates.
引用
收藏
页码：167205 / 1
页数：4
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