Observation of anomalous phonons in orthorhombic rare-earth manganites

被引：3

作者：

Gao, P. ^{[1
]}

Chen, H. Y. ^{[1
]}

Tyson, T. A. ^{[1
,2
,3
]}

Liu, Z. X. ^{[4
]}

Bai, J. M. ^{[5
]}

Wang, L. P. ^{[6
]}

Choi, Y. J. ^{[2
,3
]}

Cheong, S. -W. ^{[2
,3
]}

机构：

[1] New Jersey Inst Technol, Dept Phys, Newark, NJ 07102 USA

[2] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[3] Rutgers State Univ, Rutgers Ctr Emergent Mat, Piscataway, NJ 08854 USA

[4] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA

[5] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[6] SUNY Stony Brook, Inst Mineral Phys, Stony Brook, NY 11794 USA

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 26期

关键词：

PHASE; POLARIZATION;

D O I：

10.1063/1.3533022

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We observe the appearance of a phonon near the lock-in temperature in orthorhombic REMnO3 (RE denotes rare earth) (RE: Lu and Ho) and anomalous phonon hardening in orthorhombic LuMnO3. The anomalous phonon occurs at the onset of spontaneous polarization. No such changes were found in incommensurate orthorhombic DyMnO3. These observations directly reveal different electric polarization mechanisms in the E-type and incommensurate-type orthorhombic REMnO3. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3533022]

引用

页数：3

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