Quantum Monte Carlo Study of Hard-Core Bosons on the Anisotropic Triangular Lattice

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	Quantum Monte Carlo Study of Hard-Core Bosons on the Anisotropic Triangular Lattice
	Gan, JY ; Gan, JF
刊名	JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
	2009
卷号	78 期号:9
关键词	MODEL SUPERFLUID
ISSN号	0031-9015
通讯作者	Gan, JY (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 100190, Peoples R China.
中文摘要	We describe quantum-size and binding-site effects on the chemical and local field enhancement mechanisms of surface-enhanced resonance Raman scattering (SERRS), in which the pyridine molecule is adsorbed on one of the vertices of the Ag(20) tetrahedron. We first investigated the influence of the binding site on normal Raman scattering (NRS) and excited state properties of optical absorption spectroscopy. Second, we investigated the quantum-size effect on the electromagnetic (EM) and chemical mechanism from 300 to 1000 nm with charge difference density. It is found that the strong absorption at around 350 nm is mainly the charge transfer (CT) excitation (CT between the molecule and the silver cluster) for large clusters, which is the direct evidence for the chemical enhancement mechanism for SERRS; for a small cluster the strong absorption around 350 nm is mainly intracluster excitation, which is the direct evidence for the EM enhancement mechanism. This conclusion is further confirmed with the general Mie theory. The plasmon peak in EM enhancement will be red-shifted with the increase of cluster size. The influence of the binding site and quantum-size effects on NRS, as well as chemical and EM enhancement mechanisms on SERRS, is significant. Copyright (C) 2009 John Wiley & Sons, Ltd.
收录类别	SCI
资助信息	National Natural Science Foundation of China
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/311004/51699]
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	Gan, JY,Gan, JF. Quantum Monte Carlo Study of Hard-Core Bosons on the Anisotropic Triangular Lattice[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN,2009,78(9).
APA	Gan, JY,&Gan, JF.(2009).Quantum Monte Carlo Study of Hard-Core Bosons on the Anisotropic Triangular Lattice.JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN,78(9).
MLA	Gan, JY,et al."Quantum Monte Carlo Study of Hard-Core Bosons on the Anisotropic Triangular Lattice".JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 78.9(2009).