Ultrafast Pump-Probe Study of Phase Separation and Competing Orders in the Underdoped (Ba, K)Fe2As2 Superconductor

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	Ultrafast Pump-Probe Study of Phase Separation and Competing Orders in the Underdoped (Ba, K)Fe2As2 Superconductor
	Chia, EEM ; Talbayev, D ; Zhu, JX ; Yuan, HQ ; Park, T ; Thompson, JD ; Panagopoulos, C ; Chen, GF ; Luo, JL ; Wang, NL ; Taylor, AJ
刊名	PHYSICAL REVIEW LETTERS
	2010
卷号	104 期号:2
关键词	HIGH-TEMPERATURE SUPERCONDUCTORS SPIN-DENSITY-WAVE PHOTOEMISSION-SPECTROSCOPY BA0.6K0.4FE2AS2 BA1-XKXFE2AS2 SMFEASO1-XFX TRANSPORT DYNAMICS FEAS GAPS
ISSN号	0031-9007
通讯作者	Chia, EEM (reprint author), Nanyang Technol Univ, Div Phys & Appl Phys, Sch Phys & Math Sci, Singapore 637371, Singapore.
中文摘要	Polycrystalline PrCuMn6O12 sample has been successfully synthesized. It has been characterized by x-ray diffraction (XRD), magnetic and magnetotransport measurements at ambient pressure, and transport property measurements under pressures. From the refinements of XRD data, a cubic phase and a trigonal phase with charge ordering state were identified at higher and lower temperatures, respectively. The temperature dependence of the resistance indicates that the phase transition is a first-order transition. Both effective paramagnetic moments of the trigonal and cubic phases can be explained by orbital moment freezing theory. The transport property of the trigonal phase has been fitted with Mott's law for variable range hopping. Though the magnetoresistance value is not large, the pressure-induced resistance value change of PrCuMn6O12 is positive and achieves 264.8%. The cubic phase is suppressed under pressure and transformed to the trigonal phase at 15 kbar, indicating favor of the charge ordering state under pressure. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3294608]
收录类别	SCI
资助信息	LANL LDRD program; Singapore Ministry of Education [RG41/07, ARC23/08]; National Science Foundation of China; 973 project; National Basic Research Program of China [2009CB929104]; Chinese Academy of Sciences; PCSIRT of the Ministry of Education of China [IRT0754]; National Research Foundation of Singapore; [MEXT-CT-2006-039047]
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/46321]
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	Chia, EEM,Talbayev, D,Zhu, JX,et al. Ultrafast Pump-Probe Study of Phase Separation and Competing Orders in the Underdoped (Ba, K)Fe2As2 Superconductor[J]. PHYSICAL REVIEW LETTERS,2010,104(2).
APA	Chia, EEM.,Talbayev, D.,Zhu, JX.,Yuan, HQ.,Park, T.,...&Taylor, AJ.(2010).Ultrafast Pump-Probe Study of Phase Separation and Competing Orders in the Underdoped (Ba, K)Fe2As2 Superconductor.PHYSICAL REVIEW LETTERS,104(2).
MLA	Chia, EEM,et al."Ultrafast Pump-Probe Study of Phase Separation and Competing Orders in the Underdoped (Ba, K)Fe2As2 Superconductor".PHYSICAL REVIEW LETTERS 104.2(2010).