Polarized infrared reflectivity study in charge density wave conductor Tl(0.3)MoO(3)

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	Polarized infrared reflectivity study in charge density wave conductor Tl(0.3)MoO(3)
	D. Yin; C. Z. Li; J. F. Wang; R. Xiong; J. Shi; C. Z. Bi; J. Y. Ma; X. G. Qiu
	2009
发表期刊	Journal of Physics and Chemistry of Solids
ISSN	0022-3697
卷号	70 期号:1 页码:249-253
摘要	Polarized infrared reflectivity measurements between 300 and 10 K have been carried out on charge density waves (CDW) conductor blue bronze Tl(0.3)MoO(3). Three important features are observed: (i) A bump at 1155 cm(-1) in the reflectivity spectra of Tl(0.3)MoO(3) at 300 K is a precursor of the Peierls gap due to optical excitations across a pseudogap, and this kind of Peierls-like gap opens gradually with decreasing temperature from 180 to 160 K. (ii) The three sharp modes as "triplet" of infrared reflectivity between 800 and 1000 cm(-1) of Tl(0.3)MoO(3) along [102] axis show red shift compared to K(0.3)MoO(3) and Rb(0.3)MoO(3), which is assigned to the increase of the distance of Mo-O bond with the substitution of thallium ions. (iii) Two peaks at about 514 and 644cm(-1) in the far-infrared reflectivity spectra of Ti(0.3)MoO(3) along [102] direction are suggested to be the electronic transitions from the valence band to the midgap state and from occupied midgap state to the conduction band, respectively. (c) 2008 Elsevier Ltd. All rights reserved.
部门归属	[yin, di; li, changzhen; wang, junfeng; xiong, rui; shi, jing] wuhan univ, dept phys, minist educ, key lab acoust & photon mat & devices, wuhan 430072, peoples r china. [yin, di; li, changzhen; wang, junfeng; xiong, rui; shi, jing] wuhan univ, hubei key lab organ & polymer optoelect mat, wuhan 430072, peoples r china. [shi, jing] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. [bi, congzhi; ma, jiyun; qiu, xianggang] chinese acad sci, inst phys, natl lab superconduct, beijing 100080, peoples r china.;shi, j (reprint author), wuhan univ, dept phys, minist educ, key lab acoust & photon mat & devices, wuhan 430072, peoples r china,peoples r china;niuniuyin@yahoo.com.cn jshi@whu.edu.cn
关键词	Infrared Spectroscopy Charge-density Waves One-dimensional Conductor Dependent Fermi-surface Crystal-structure Raman-scattering Midgap-state K0.3moo3 Moo3 Spectroscopy K0.30moo3 Rb0.3moo3
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32504
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. Yin,C. Z. Li,J. F. Wang,et al. Polarized infrared reflectivity study in charge density wave conductor Tl(0.3)MoO(3)[J]. Journal of Physics and Chemistry of Solids,2009,70(1):249-253.
APA	D. Yin.,C. Z. Li.,J. F. Wang.,R. Xiong.,J. Shi.,...&X. G. Qiu.(2009).Polarized infrared reflectivity study in charge density wave conductor Tl(0.3)MoO(3).Journal of Physics and Chemistry of Solids,70(1),249-253.
MLA	D. Yin,et al."Polarized infrared reflectivity study in charge density wave conductor Tl(0.3)MoO(3)".Journal of Physics and Chemistry of Solids 70.1(2009):249-253.