Gauge mediation with heavy doublet superparticles

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	Gauge mediation with heavy doublet superparticles
	Shao, H
刊名	PHYSICAL REVIEW D
	2012
卷号	85 期号:9
关键词	DYNAMICAL SUPERSYMMETRY BREAKING LIGHTEST HIGGS BOSON MASSES MODEL
ISSN号	1550-7998
通讯作者	Shao, H: Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
中文摘要	Stoner-Wohlfarth itinerant-electron ferromagnetism has been believed to be applicable to the metallic, ferromagnetic perovskite SrRuO3. A key piece of evidence is the linearity of the Arrott plot M-2 versus H/M obtained in a previous study. However, a typical Heisenberg behavior observed in isostructural BaRuO3 raises a question how the small structural change between them can place these compounds into two extremes of magnetic interactions. For clarification of this issue, we carried out magnetization measurements in the vicinity of T-c for the whole series of ferromagnetic ruthenates from Ca0.5Sr0.5RuO3 to SrRuO3 to BaRuO3. Moreover, we studied the effects of the A-site size variance and hydrostatic versus nonhydrostatic pressure on the Arrott plot of SrRuO3. Our results reveal that the magnetization behavior as presented by the Arrott plot is extremely sensitive to structural distortions. The linearity of the Arrott plot for SrRuO3 is actually part of a continuous curvature evolution as lattice distortions and spin-orbit coupling change; it may have little to do with Stoner-Wohlfarth itinerant-electron ferromagnetism. The data for these ruthenates point to a distinct phase appearing between localized-electron and broad-band behavior that exhibits a strong ferromagnetism stabilized by strong correlations among electrons of a narrow band.
收录类别	SCI
资助信息	National Natural Science Foundation of China [11075193, 10821504]; National Basic Research Program of China [2010CB833000]
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/311004/38589]
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	Shao, H. Gauge mediation with heavy doublet superparticles[J]. PHYSICAL REVIEW D,2012,85(9).
APA	Shao, H.(2012).Gauge mediation with heavy doublet superparticles.PHYSICAL REVIEW D,85(9).
MLA	Shao, H."Gauge mediation with heavy doublet superparticles".PHYSICAL REVIEW D 85.9(2012).