The charge carrier localization in the cubic perovskite BaOsO3 revealed by an optical study

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	The charge carrier localization in the cubic perovskite BaOsO3 revealed by an optical study
	Zheng, P ; Shi, YG ; Fang, AF ; Dong, T ; Yamaura, K ; Wang, NL
刊名	JOURNAL OF PHYSICS-CONDENSED MATTER
	2014
卷号	26 期号:43
关键词	metal-insulator transition transition-metal compounds infrared spectra localization correlated electrons
ISSN号	0953-8984
通讯作者	Zheng, P (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	We present the optical conductivity spectra for the newly discovered cubic perovskite structure BaOsO3 at various temperatures. The compound exhibits metallic behaviour above 50 K, but becomes non-metallic below 50K. However, below 550 cm(-1), neither the typical Drude response nor an energy gap is observed in optical conductivity spectra from 300K to 10K. A broad peak centred at about 550 cm(-1) is observed in the real part of optical conductivity sigma 1(omega). The structure could be well reproduced by the localization modified Drude model. The life time of the carrier, deduced from sigma 1(omega) in terms of the localization modified Drude model, decreases with T varying from 300K to 100 K, then increases slightly at 10 K. The study indicates that the compound is at the boundary of metal-insulator transition.
资助信息	973 project of the Ministry of Science and Technology of China [2011CB921701, 2011CBA00110, 2010CB923001]; National Science Foundation of China [11120101003]; Funding Program for World Leading Innovative R&D on Science and Technology (FIRST Program) of Japan; JSPS [22246083]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59267]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zheng, P,Shi, YG,Fang, AF,et al. The charge carrier localization in the cubic perovskite BaOsO3 revealed by an optical study[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2014,26(43).
APA	Zheng, P,Shi, YG,Fang, AF,Dong, T,Yamaura, K,&Wang, NL.(2014).The charge carrier localization in the cubic perovskite BaOsO3 revealed by an optical study.JOURNAL OF PHYSICS-CONDENSED MATTER,26(43).
MLA	Zheng, P,et al."The charge carrier localization in the cubic perovskite BaOsO3 revealed by an optical study".JOURNAL OF PHYSICS-CONDENSED MATTER 26.43(2014).