Impurity-screening effects on electronic states of the two-dimensional system under a quantizing magnetic field

1993 ◽  
Vol 47 (4) ◽  
pp. 2176-2183 ◽  
Author(s):  
Flávio Aristone ◽  
Nelson Studart
Keyword(s):  
Magnetic Field ◽  
Electronic States ◽  
Dimensional System ◽  
Two Dimensional ◽  
Two Dimensional System ◽  
Quantizing Magnetic Field

scholarly journals Steady states of non-axial dipolar rods driven by rotating fields

Soft Matter ◽  
2020 ◽  
Vol 16 (5) ◽  
pp. 1201-1210
Author(s):  
Jorge L. C. Domingos ◽  
Everton A. de Freitas ◽  
W. P. Ferreira
Keyword(s):  
Magnetic Field ◽  
Dipole Moment ◽  
External Magnetic Field ◽  
Steady States ◽  
Dimensional System ◽  
Two Dimensional ◽  
Axial Dipole ◽  
Two Dimensional System ◽  
Magnetic Colloids

We investigate a two-dimensional system of magnetic colloids with anisotropic geometry (rods) and non-axial dipole moment subjected to an oscillating external magnetic field.

Localization and interaction effects in weakly disordered two-dimensional systems

1982 ◽  
Vol 60 (5) ◽  
pp. 746-756 ◽  
Author(s):  
Moshe Kaveh
Keyword(s):  
Thin Film ◽  
Density Of States ◽  
Hall Coefficient ◽  
Electronic States ◽  
Dimensional System ◽  
Two Dimensional ◽  
Theoretical Approaches ◽  
Two Dimensional System ◽  
Interaction Approach ◽  
Localization Approach

The question of whether a two-dimensional metal can exist is discussed. The theoretical and experimental position is reviewed. Experimentally, the conductivity of a two-dimensional system (such as inversion layers or thin film metals) shows the following nonmetallic behavior: (i) logarithmic decrease of the conductivity as T → 0. (ii) negative magnetoresistance, (iii) logarithmic decrease of the Hall coefficient as T → 0, and (iv) nonohmic conductivity, increasing logarithmically with electric field.The nonmetallic behavior of the conductivity is discussed in view of two recent theoretical approaches, (i) The localization approach, which predicts that all electronic states in a two-dimensional system are localized, and (ii) the interaction approach which predicts a logarithmic decrease in the density of states as the temperature is decreased.Evidence for both theories is presented.

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