Common origin of the two types of magnetic fluctuations in iron chalcogenides

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	Common origin of the two types of magnetic fluctuations in iron chalcogenides
	Chi, SX ; Rodriguez-Rivera, JA ; Lynn, JW ; Zhang, CL ; Phelan, D ; Singh, DK ; Paul, R ; Dai, PC
刊名	PHYSICAL REVIEW B
	2011
卷号	84 期号:21
关键词	RAY ACTIVATION-ANALYSIS SUPERCONDUCTIVITY FETE1-XSEX NEUTRON
ISSN号	1098-0121
通讯作者	Chi, SX: Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
中文摘要	The Gaussian transition in the spin-1 Heisenberg chain with single-ion anisotropy is extremely difficult to treat, both analytically and numerically. We introduce an improved density-matrix renormalization group procedure with strict error control, which we use to access very large systems. By considering the bulk entropy, we determine the Gaussian transition point to four-digit accuracy, D-c/J = 0.968 45(8), resolving a long-standing debate in quantum magnetism. With this value, we obtain high-precision data for the critical behavior of quantities, including the ground-state energy, gap, and transverse string-order parameter, and for the critical exponent nu = 1.472(2). Applying our improved technique at J(z) = 0.5 highlights essential differences in critical behavior along the Gaussian transition line.
收录类别	SCI
资助信息	US Department of Commerce; NSF [DMR-0944772]; US DOE, Basic Energy Sciences (BES) through DOE [DE-FG02-05ER46202]; Chinese Academy of Science; Ministry of Science and Technology of China [2012CB821400]
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/311004/34922]
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	Chi, SX,Rodriguez-Rivera, JA,Lynn, JW,et al. Common origin of the two types of magnetic fluctuations in iron chalcogenides[J]. PHYSICAL REVIEW B,2011,84(21).
APA	Chi, SX.,Rodriguez-Rivera, JA.,Lynn, JW.,Zhang, CL.,Phelan, D.,...&Dai, PC.(2011).Common origin of the two types of magnetic fluctuations in iron chalcogenides.PHYSICAL REVIEW B,84(21).
MLA	Chi, SX,et al."Common origin of the two types of magnetic fluctuations in iron chalcogenides".PHYSICAL REVIEW B 84.21(2011).