Splitting of the second magnetization peak in the superconductor Tl2Ba2CaCu2O8+x

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	Splitting of the second magnetization peak in the superconductor Tl2Ba2CaCu2O8+x
	Pissas, M ; Stamopoulos, D ; Psycharis, V ; Ma, YC ; Wang, NL
刊名	PHYSICAL REVIEW B
	2006
卷号	73 期号:17
关键词	HIGH-TEMPERATURE SUPERCONDUCTORS YBA2CU3O7 SINGLE-CRYSTALS VORTEX PHASE-DIAGRAM FLUX-LINE-LATTICE MELTING TRANSITION REVERSIBLE MAGNETIZATION LAYERED SUPERCONDUCTORS ANOMALOUS MAGNETIZATION II SUPERCONDUCTORS SOLID-PHASE
ISSN号	1098-0121
通讯作者	Pissas, M (reprint author), Natl Ctr Sci Res Demokritos, Inst Mat Sci, Athens 15310, Greece.
中文摘要	We show that transition states during spin flips, besides interspin exchange and on-site anisotropy, are necessary for a complete description of monatomic spin chains, and study the dynamical spin system using kinetic Monte Carlo method based on transition-state theory. Using experimental parameters of the monatomic Co spin chains on Pt surfaces, we produce the experimental hysteresis loop at 10 K and show that there is no hysteresis loops at 45 K. There is a phase crossover from the long-range ferromagnetism at low temperature to disordered magnetic states at high temperature. Our systematical simulation shows that the chain-length dependence of the long-range ferromagnetism is very weak and even approaches to zero when the chain length becomes large enough. The crossover temperature is a monotonously increasing function of the sweeping rate of changing magnetic field. The simulations are justified because the quantum effect can be ignored except for very low temperatures. Our theory explains the ferromagnetism of finite one-dimensional spin chains with large magnetic anisotropy such as the monatomic Co chains on Pt surfaces.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/52958]
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	Pissas, M,Stamopoulos, D,Psycharis, V,et al. Splitting of the second magnetization peak in the superconductor Tl2Ba2CaCu2O8+x[J]. PHYSICAL REVIEW B,2006,73(17).
APA	Pissas, M,Stamopoulos, D,Psycharis, V,Ma, YC,&Wang, NL.(2006).Splitting of the second magnetization peak in the superconductor Tl2Ba2CaCu2O8+x.PHYSICAL REVIEW B,73(17).
MLA	Pissas, M,et al."Splitting of the second magnetization peak in the superconductor Tl2Ba2CaCu2O8+x".PHYSICAL REVIEW B 73.17(2006).