The Conductivity Measure for the Anderson Model
نویسندگان
چکیده
We study the ac-conductivity in linear response theory for the Anderson tight-binding model. We define the electrical acconductivity and calculate the linear-response current at zero temperature for arbitrary Fermi energy. In particular, the Fermi energy may lie in a spectral region where extended states are believed to exist.
منابع مشابه
Experimental investigation of relative thermal conductivity of MWCNTs-CuO/Water nanofluids
This work presents a model for calculating the effective thermal conductivity of nanofluids. The proposed model includes the effects of nanoparticles and thermal conductivity base fluid.We will focus on experimental of the volume concentration parameter and temperature on thermal conductivity, nano-fluid combination and Multi-Walled Carbon nanotubes-Oxide / Copper-paid deionized Water. T...
متن کاملModifications to Walker-Anderson Model for Analysis of High-velocity Penetration of an Eroding Long-rod Projectile into Semi-infinite Concrete Targets
This paper presents a modified form of the Walker-Anderson (W-A) model for analyzing high velocity penetration of an eroding projectile into a concrete target in which the W-A model is improved by incorporating calculations for the plastic flow field of concrete in terms of its compressibility and strain rate sensitivity under severe pressure. With the changes to and calculations of plastic fie...
متن کاملLaboratory Investigation on the Influence of Cyclic Water Injection Pressure on Sands Hydraulic Conductivity
Hydraulic conductivity variations around the boreholes in uniformly graded sands for cyclic water injection pressure have been evaluated by laboratory tests. Prototype laboratory devices have been designed and constructed for this research. The cell has a capability to model the well, the boundary condition and to measure the hydraulic conductivity. While increasing water injection pressure, hy...
متن کاملModel for Thermal Conductivity of Nanofluids Using a General Hybrid GMDH Neural Network Technique
In this study, a model for estimating the NFs thermal conductivity by using a GMDH-PNN has been investigated. NFs thermal conductivity was modeled as a function of the nanoparticle size, temperature, nanoparticle volume fraction and the thermal conductivity of the base fluid and nanoparticles. For this purpose, the developed network contains 8 layers with 2 inputs in each layer and also tra...
متن کاملStudying Spatial Changes of Groundwater\'s Nitrate Content in Central District of Khodabandeh, Iran
Background: This research aims to measure and study spatial changes, and the reason behind the increasing nitrate content in water wells in the Central District of Khodabandeh County in the Zanjan Province. Methods: The nitrate and nitrite content, electrical conductivity, dissolved oxygen, temperature, total hardness and pH were measured at 40 sampling stations in the study area. The obtained...
متن کامل