Critical behavior of ac conductivity near the Anderson transition


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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/6071

Title:	Critical behavior of ac conductivity near the Anderson transition
Authors:	Shima, Hiroyuki¹ Browse this author →KAKEN DB
Authors:	Nakayama, Tsuneyoshi Browse this author
Authors(alt):	島, 弘幸¹
Issue Date:	15-Nov-1999
Publisher:	American Physical Society
Journal Title:	Physical Review B
Volume:	60
Issue:	20
Start Page:	14066
End Page:	14071
Publisher DOI:	10.1103/PhysRevB.60.14066
Abstract:	We investigate the dynamic scaling behavior of ac conductivity σ(ω) in three-dimensional (3D) unitary and symplectic systems in addition to orthogonal one by means of large-scale simulations. It is demonstrated that the ac conductivity near the Anderson transition behave as σ(ω)∝ωδ(δ≃1/3) for all of the above systems. Numerical calculations are performed by an efficient algorithm based on the forced oscillator method (FOM), which enables us to accurately treat large-scale quantum systems with less computational effort. The values of the exponents δ are determined by the finite-time scaling method for the FOM.
Rights:	Copyright © 1999 American Physical Society
Relation:	http://www.aps.org/
Type:	article
URI:	http://hdl.handle.net/2115/6071
Appears in Collections:	工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 島弘幸

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