1994/02/04 by Min-Chul Cha, H. A. Fertig · 1 citation
Materials Science · Physics and Astronomy · #Condensed matter physics #Dislocation #Electric field #Electron #Ground state #Impurity #Lattice (music) #Materials science #Organic and Molecular Conductors Research #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #cond-mat
paper · pdf · doi:10.1103/physrevlett.73.870
4 pages, RevTex3.0, uuencoded 1 postscript file for figures appended, UK-HAF-94002
arxiv created 1994/02/04 · openalex publication_date 1994/08/08 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Two-dimensional classical electron solids under the influence of modulation-doped impurities are studied by using a molecular dynamics method. We find that in the strong disorder limit the ground state configuration contains both isolated dislocations and disclinations, whereas in the weak disorder regime only dislocations are present. We show, via continuum elasticity theory, that the ground state of the lattice should be unstable against a proliferation of free disclinations above a critical dislocation density. Associated with this, the behavior of the depinning electric field changes.