Terahertz spectroscopy of central and soft phonon modes in LuFe(2)O(4)

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	Terahertz spectroscopy of central and soft phonon modes in LuFe(2)O(4)
	S. Z. Li; S. J. Luo; R. Fu; B. B. Jin; K. F. Wang; J. M. Liu; J. F. Ding; X. G. Li
	2009
发表期刊	Applied Physics a-Materials Science & Processing
ISSN	0947-8396
卷号	96 期号:4 页码:893-898
摘要	The terahertz dielectric response of LuFe(2)O(4) is investigated by terahertz time-domain spectroscopy over a temperature range of 6-290 K. It is revealed that besides the central mode associated with the charge-ordered state, a soft TO(1) mode at below similar to 240 K is identified indicating the existence of displacing ferroelectricity, in addition to the charge-ordering-induced ferroelectricity at below 320 K. The anomaly of the soft mode at similar to 180 K reflects the magnetoelectric correlation between the soft TO(1) mode and the spin/charge fluctuations revealed recently. Finally, the magnetic property at below similar to 240 K is discussed.
部门归属	[li, s. z.; luo, s. j.; wang, k. f.; liu, j. -m.] nanjing univ, nanjing natl lab microstruct, nanjing 210093, peoples r china. [li, s. z.; luo, s. j.; wang, k. f.; liu, j. -m.] chinese acad sci, int ctr mat phys, shenyang, peoples r china. [fu, r.; jin, b. b.] nanjing univ, dept elect sci & engn, nanjing 210093, peoples r china. [ding, j. f.; li, x. g.] univ sci & technol china, hefei natl lab phys sci microscales, hefei 230026, peoples r china.;liu, jm (reprint author), nanjing univ, nanjing natl lab microstruct, nanjing 210093, peoples r china;liujm@nju.edu.cn
关键词	System Lufe2o4 Charge Polarization
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32034
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Z. Li,S. J. Luo,R. Fu,et al. Terahertz spectroscopy of central and soft phonon modes in LuFe(2)O(4)[J]. Applied Physics a-Materials Science & Processing,2009,96(4):893-898.
APA	S. Z. Li.,S. J. Luo.,R. Fu.,B. B. Jin.,K. F. Wang.,...&X. G. Li.(2009).Terahertz spectroscopy of central and soft phonon modes in LuFe(2)O(4).Applied Physics a-Materials Science & Processing,96(4),893-898.
MLA	S. Z. Li,et al."Terahertz spectroscopy of central and soft phonon modes in LuFe(2)O(4)".Applied Physics a-Materials Science & Processing 96.4(2009):893-898.