Critical behavior of ac conductivity near the Anderson transition

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概要

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• 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.

• American Physical Societyの論文
• 1999-11-15

著者

• Shima H

  Hokkaido Univ. Sapporo Jpn

関連論文

• Critical behavior of ac conductivity near the Anderson transition

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