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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 |
2007-01-01 | |
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). |
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