1999/08/19 by G. Aichmayr, M. Jetter, Michael Jetter +8 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum and electron transport phenomena #Quantum, superfluid, helium dynamics #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.83.2433
published as Phys. Rev. Lett. 83, 2433 (1999) · 5 pages, 4 eps figures, RevTeX, Physical Review Letters (in press)
arxiv created 1999/08/19 · openalex publication_date 1999/09/20 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We have shown experimentally that an electric field decreases the energy separation between the two components of a dense spin-polarized exciton gas in a coupled double quantum well, from a maximum splitting of \ensuremath∼4meV to zero, at a field of \ensuremath∼35kV/cm. This decrease, due to the field-induced deformation of the exciton wave function, is explained by an existing calculation of the change in the spin-dependent exciton-exciton interaction with the electron-hole separation. However, a new theory that considers the modification of screening with that separation is needed to account for the observed dependence on excitation power of the individual energies of the two exciton components.