Semiclassical approach to the ground state and density oscillations of quantum d

2019-06-24 03:43:12

state density ground dependent oscillations

责任者: Puente, A.;Casas, M.;Serra, Ll. 单位: Universitat de les Illes Balears, Palma de Mallorca, Spain 来源出处: Physica E: Low-Dimensional Systems and Nanostructures,2000,8(4):387-397 摘要: A semiclassical Thomas-Fermi method, including a Weizsacker gradient term, is implemented to describe ground states of two-dimensional nanostructures of arbitrary shape. Time-dependent density oscillations are addressed in the same spirit using the corresponding semiclassical time-dependent equations. The validity of the approximations is tested, both for ground state and density oscillations, compared with the available microscopic Kohn-Sham solutions. 关键词: Semiconductor quantum dots;Ground state;Oscillations;Fermi level;Nanostructured materials;Density oscillations;Weizsacker gradient term