von Neumann entropy signatures of a transition in one-dimensional electron systems with long-range correlated disorder
學年 99
學期 1
出版(發表)日期 2010-10-01
作品名稱 von Neumann entropy signatures of a transition in one-dimensional electron systems with long-range correlated disorder
作品名稱(其他語言)
著者 Gong, Long-Yan; Tong, Pei-Qing; Zhou, Zi-Cong
單位 淡江大學物理學系
出版者 Heidelberg : Springer
著錄名稱、卷期、頁數 The European Physical Journal B 77(3), pp.413-417
摘要 We study the von Neumann entropy and related quantities in one-dimensional electron systems with on-site long-range correlated potentials. The potentials are characterized by a power-law power spectrum S(k) ∝ 1/kα, where α is the correlation exponent. We find that the first-order derivative of spectrum-averaged von Neumann entropy is maximal at a certain correlation exponent αm for a finite system, and has perfect finite-size scaling behaviors around αm . It indicates that the first-order derivative of the spectrum-averaged von Neumann entropy has singular behavior, and αm can be used as a signature for transition points. For the infinite system, the threshold value αc = 1.465 is obtained by extrapolating αm.
關鍵字
語言 en
ISSN 1434-6028; 1434-6036
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Gong, Long-Yan; Tong, Pei-Qing; Zhou, Zi-Cong
審稿制度
國別
公開徵稿
出版型式
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