Scaling Properties of Energy Gap in Dimerized Spinless Fermion Chains with  Quasiperiodic Modulation

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	Scaling Properties of Energy Gap in Dimerized Spinless Fermion Chains with Quasiperiodic Modulation
其他题名	Scaling Properties of Energy Gap in Dimerized Spinless Fermion Chains with Quasiperiodic Modulation
	2007
发表期刊	中国物理快报：英文版
ISSN	0256-307X
摘要	By employing the exact diagonalization method, we investigate the low-energy benavlour ot the almenzed spinless fermion chains with quasiperiodic modulation. It is found that for off-diagonal modulation, the energy gap with length N scales as exp（-cN^ω） with nonuniversal exponent ω if the dimerization is nonzero. However, for diagonal modulation, there may exist a critical dimerization δc beyond which the system exhibits a metal-insulator transition.
其他摘要	By employing the exact diagonalization method, we investigate the low-energy benavlour ot the almenzed spinless fermion chains with quasiperiodic modulation. It is found that for off-diagonal modulation, the energy gap with length N scales as exp（-cN^ω） with nonuniversal exponent ω if the dimerization is nonzero. However, for diagonal modulation, there may exist a critical dimerization δc beyond which the system exhibits a metal-insulator transition.
关键词	能隙对角化方法费米子量子学
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:2719401
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/51643
专题	中国科学院合肥物质科学研究院
推荐引用方式 GB/T 7714	. Scaling Properties of Energy Gap in Dimerized Spinless Fermion Chains with Quasiperiodic Modulation[J]. 中国物理快报：英文版,2007,024.
APA	(2007).Scaling Properties of Energy Gap in Dimerized Spinless Fermion Chains with Quasiperiodic Modulation.中国物理快报：英文版,024.
MLA	"Scaling Properties of Energy Gap in Dimerized Spinless Fermion Chains with Quasiperiodic Modulation".中国物理快报：英文版 024(2007).