Testing of two-dimensional local approximations in the current-spin and spin-density-functional theories

Article

关键词: DIMENSIONAL ELECTRON-GAS;    CORRELATION-ENERGY;    MAGNETIC-FIELDS;    QUANTUM DOTS;    STATES;   

DOI  :  10.1103/PhysRevB.67.205327

来源: SCIE

【 摘 要 】

We study a model quantum dot system in an external magnetic field by using both spin-density-functional theory and current-spin density-functional theory. The theories are used with local approximations for the spin-density and vorticity. The reliabilities of different parametrizations for the exchange-correlation functionals are tested by comparing the ensuing energetics with quantum Monte Carlo results. The limit where the vorticity dependence should be used in the exchange-correlation functionals is discussed.

【 授权许可】

Free