Real-Time Electron Dynamics with Exact-Exchange Time-Dependent Density-Functional Theory
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The exact exchange potential in time- dependent density-functional theory is defined as an orbital functional through the time-dependent optimized effective potential (TDOEP) method. We numerically solve the TDOEP integral equation for the real-time nonlinear intersubband electron dynamics in a semiconductor quantum well with two occupied subbands. It is found that memory effects become significant in the vicinity of intersubband resonances.
Phys. Rev. Lett. 100, 056404 (2008)