Polarized infrared reflectivity study in charge density wave conductor Tl0.3MoO3
Polarized infrared reflectivity study in charge density wave conductor Tl0.3MoO3
复制标题
电荷密度波导体Tl0.3MoO3的偏振红外反射率研究
DOI：
10.1016/j.jpcs.2008.10.013
复制
发表时间：
2009
影响因子：
4
通讯作者：
Bi, Congzhi
中科院分区：
文献类型：
--
作者：
Yin, Di;Xiong, Rui;Ma, JiYun;Li, Changzhen;Qiu, XiangGang;Wang, Junfeng;Shi, Jing;Bi, Congzhi
对电荷密度波（CDW）导体蓝青铜Tl0.3MoO3在300 ~ 10K范围内的偏振红外反射率进行了测量。(1)在300K时，tl0.3 moo3的反射率光谱中有一个1155cm−1处的隆起，这是赝隙的前兆，这种赝隙在180 ~ 160K时随着温度的降低逐渐打开。（ii） tl0.3 moo3沿[102]轴的红外反射率在800 ~ 1000cm−1之间的三个尖模较k0.3 moo3和Rb0.3MoO3呈现红移，这是由于铊离子的取代增加了Mo-O键的距离。（iii） tl0.3 moo3在[102]方向的远红外反射率光谱中，514和644cm−1处的两个峰分别为价带向中隙态和占据中隙态向导带的电子跃迁。
Polarized infrared reflectivity measurements between 300 and 10K have been carried out on charge density waves (CDW) conductor blue bronze Tl0.3MoO3. Three important features are observed: (i) A bump at 1155cm−1in the reflectivity spectra of Tl0.3MoO3at 300K 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 160K. (ii) The three sharp modes as “triplet” of infrared reflectivity between 800 and 1000cm−1of Tl0.3MoO3along [102] axis show red shift compared to K0.3MoO3and Rb0.3MoO3, 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−1in the far-infrared reflectivity spectra of Tl0.3MoO3along [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.
登录
查看更多内容
DOI：
10.1016/0584-8539(94)00247-9
发表时间：
1995-07-01
影响因子：
4.4
作者：
SEGUIN, L;FIGLARZ, M;LASSEGUES, JC
通讯作者：
LASSEGUES, JC
DOI：
10.1103/physrevb.33.6718
发表时间：
1986-05
期刊：
Physical review. B, Condensed matter
影响因子：
--
作者：
Nakano;Machida
通讯作者：
Nakano;Machida
影响因子：
3.7
作者：
G. Travaglini;P. Wachter
通讯作者：
G. Travaglini;P. Wachter
影响因子：
3.7
作者：
Choi, J;Musfeldt, JL;Brill, JW
通讯作者：
Brill, JW
影响因子：
3.7
作者：
M. Sing;R. Neudert;H. Lips;M. Golden;M. Knupfer;J. Fink;R. Claessen;J. Mücke;H. Schmitt;S. Hüfner;B. Lommel;W. Assmus;C. Jung;C. Hellwig
通讯作者：
M. Sing;R. Neudert;H. Lips;M. Golden;M. Knupfer;J. Fink;R. Claessen;J. Mücke;H. Schmitt;S. Hüfner;B. Lommel;W. Assmus;C. Jung;C. Hellwig