ac conductivity of a one-dimensional site-disordered lattice
Journal Article
·
· Phys. Rev., B; (United States)
We report the results of a numerical study of the ac conductivity for the Anderson model of a one-dimensional, site-disordered system of 400 atoms. For different degrees of disorder, we directly diagonalized the Anderson Hamiltonian, used the Kubo-Greenwood formula to evaluate the conductivity, and then averaged the conductivity over 12 configurations. We found that the dominant frequency dependence of the conductivity consisted of a single peak which shifted to higher frequency and decreased in overall magnitude as the disorder was increased. The joint density of states and the eigenstate localization were also computed and are discussed in connection with our results.
- Research Organization:
- Theoretical Division, Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545
- OSTI ID:
- 6733092
- Journal Information:
- Phys. Rev., B; (United States), Vol. 17:12
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
METALS
ELECTRIC CONDUCTIVITY
ONE-DIMENSIONAL CALCULATIONS
ALTERNATING CURRENT
CORRELATED-PARTICLE MODELS
CRYSTAL LATTICES
ENERGY-LEVEL DENSITY
CRYSTAL STRUCTURE
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
MATHEMATICAL MODELS
PARTICLE MODELS
PHYSICAL PROPERTIES
656000* - Condensed Matter Physics
SUPERCONDUCTIVITY AND SUPERFLUIDITY
METALS
ELECTRIC CONDUCTIVITY
ONE-DIMENSIONAL CALCULATIONS
ALTERNATING CURRENT
CORRELATED-PARTICLE MODELS
CRYSTAL LATTICES
ENERGY-LEVEL DENSITY
CRYSTAL STRUCTURE
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
MATHEMATICAL MODELS
PARTICLE MODELS
PHYSICAL PROPERTIES
656000* - Condensed Matter Physics