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On the metallic behaviour in dilute two-dimensional systems | | A.R. Hamilton
; M.Y. Simmons
; M. Pepper
; D.A. Ritchie
; | | Date: |
17 Mar 2000 | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | Abstract: | We have studied the metallic behaviour in low density GaAs hole systems, and Si electron systems, close to the apparent two-dimensional metal-insulator transition. Two observations suggest a semi-classical origin for the metallic-like behaviour. Firstly the strength of the metallic behaviour is almost independent of the symmetry of the confining potential, and is predominantly determined by the low temperature resistivity (i.e. by k_F*l). Secondly the fractional decrease in conductivity with increasing temperature depends only on T/T_F, independent of the carrier density, in both systems. | | Source: | arXiv, cond-mat/0003295 | | Services: | Forum | Review | PDF | Favorites | |
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