Quantum phase transition in double triangular layer

機構典藏 > College of Sciences > Graduate Institute & Department of Physics > Journal Article > Item 987654321/27589

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/27589

Title:	Quantum phase transition in double triangular layer
Authors:	Shik, H. Y.;陳惟堯;Chen, Wei-yeu;Lin, Hai-qing
Contributors:	淡江大學物理學系
Keywords:	Dimerized state;Quantum phase transition;Soluble quantum spin model
Date:	2004-05-01
Issue Date:	2009-12-31 10:27:52 (UTC+8)
Publisher:	Elsevier
Abstract:	We study a quantum spin model defined on a double triangular layer whose ground state and the first few excited states could be rigorously obtained for any spin S. There exist two kinds of ground state, one is a complete dimerized state, and the other one is the ground state of corresponding spin-2S model defined on the single triangular layer. Quantum phase transition points are determined by the spin-wave theory and verified by exact diagonalization study of finite clusters. The excitation spectrum is investigated and we found that there exists a singlet to singlet transition as well as triplet to singlet transition as parameters vary.
Relation:	Journal of Magnetism and Magnetic Materials 272-276(1), pp.203-204
DOI:	10.1016/j.jmmm.2003.12.1039
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

Files in This Item:

File	Description	Size	Format
		0Kb	Unknown	351	View/Open
Quantum phase transition in double triangular layer.pdf		168Kb	Adobe PDF	3	View/Open