2005/10/18 by O. É. Raichev, O. E. Raichev, F. T. Vasko · 1 citation
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Atomic physics #Computer science #Current (fluid) #Electrical engineering #Electron #Engineering #Photochemistry and Electron Transfer Studies #Physics #Quantum mechanics #Semiconductor materials and devices #Thermodynamics #Transient (computer programming) #Transient response #Transition Metal Oxide Nanomaterials #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.72.193304
published in Physical Review B 72(19) (American Physical Society) · 5 pages, 3 figures
arxiv created 2005/10/18 · openalex publication_date 2005/11/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The time-dependent current of the electrons excited in the conduction band after ultrafast interband photogeneration is studied theoretically. The transient photocurrent is calculated for the nonlinear regime of response to a stationary electric field. The response demonstrates transient absolute negative conductivity when the electrons are excited slightly below the optical phonon energy, while the periodic oscillations of the electric current appear after formation of the streaming distribution. The quenching of these peculiarities by the elastic scattering of electrons is also considered.