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Ground-state energy and compressibility of a disordered two-dimensional electron gas

Tanatar, B ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.1142/s0217979207043531
  3. Publisher: World Scientific Publishing Co. Pte Ltd , 2007
  4. Abstract:
  5. Two-dimensional (2D) electron systems in the presence of disorder are of interest in connection with the observed metal-insulator transition in such systems. We use density functional theory in its local-spin density approximation (LSDA) to calculate the ground-state energy of a 2D electron system in the presence of remote charged impurities which up on averaging provides disorder. The inverse compressibility calculated from the ground-state energy exhibits a minimum at a critical density controlled by the disorder strength. Our findings are in agreement with experimental results. © World Scientific Publishing Company
  6. Keywords:
  7. 2D electron gas ; Compressibility ; Disorder effects
  8. Source: International Journal of Modern Physics B ; Volume 21, Issue 13-14 , 2007 , Pages 2134-2144 ; 02179792 (ISSN)
  9. URL: https://www.worldscientific.com/doi/abs/10.1142/S0217979207043531