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26 April 2024 |
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The Droplet State and the Compressibility Anomaly in Dilute 2D Electron Systems | | Junren Shi
; X. C. Xie
; | | Date: |
26 Mar 2001 | | Subject: | Strongly Correlated Electrons; Disordered Systems and Neural Networks | cond-mat.str-el cond-mat.dis-nn | | Abstract: | We investigate the space distribution of carrier density and the compressibility of two-dimensional (2D) electron systems by using the local density approximation. The strong correlation is simulated by the local exchange and correlation energies. A slowly varied disorder potential is applied to simulate the disorder effect. We show that the compressibility anomaly observed in 2D systems which accompanies the metal-insulator transition can be attributed to the formation of the droplet state due to disorder effect at low carrier densities. | | Source: | arXiv, cond-mat/0103541 | | Services: | Forum | Review | PDF | Favorites | |
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