An electronic structure perspective on glass-forming ability in metallic glasses

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	An electronic structure perspective on glass-forming ability in metallic glasses
	Yu, HB ; Wang, WH ; Bai, HY
刊名	APPLIED PHYSICS LETTERS
	2010
卷号	96 期号:8
关键词	TEMPERATURE SPECIFIC-HEAT QUASI-CRYSTALS ALLOYS SYSTEMS
ISSN号	0003-6951
通讯作者	Bai, HY: Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	The thermopower and Nernst effect were investigated for undoped parent compounds LaFeAsO and LaNiAsO. Both the thermopower and Nernst signal in iron-based LaFeAsO are significantly larger than those in nickel-based LaNiAsO. Furthermore, abrupt changes in both the thermopower and Nernst effect are observed below the structural phase transition temperature and spin-density wave (SDW) type antiferromagnetic (AFM) order temperature in Fe-based LaFeAsO. On the other hand, the Nernst effect is very small in the Ni-based LaNiAsO and it is weakly temperature-dependent, reminiscent of the case in normal metals. We suggest that the effect of SDW order on the spin scattering rate should play an important role in the anomalous temperature dependence of the Hall effect and Nernst effect in LaFeAsO. The contrasting behaviour between the LaFeAsO and LaNiAsO systems implies that the LaFeAsO system is fundamentally different from the LaNiAsO system and this may provide clues to the mechanism of high T(c) superconductivity in Fe-based systems.
收录类别	SCI
资助信息	NSF of China [50731008, 50921091]; MOST 973 [2007CB613904, 2010CB731600]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/33635]
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	Yu, HB,Wang, WH,Bai, HY. An electronic structure perspective on glass-forming ability in metallic glasses[J]. APPLIED PHYSICS LETTERS,2010,96(8).
APA	Yu, HB,Wang, WH,&Bai, HY.(2010).An electronic structure perspective on glass-forming ability in metallic glasses.APPLIED PHYSICS LETTERS,96(8).
MLA	Yu, HB,et al."An electronic structure perspective on glass-forming ability in metallic glasses".APPLIED PHYSICS LETTERS 96.8(2010).