Найдено научных статей и публикаций: 1, для научной тематики: Collective properties
1.
S. A. MOSKALENKO, M. A. LIBERMAN, E. V. DUMANOV, I. V. PODLESNY
- Wiley Periodicals , 2009
The article consists of two parts describing two associated properties of
two-dimensional magnetoexcitons. In the first part, the theory of combined excitoncyclotron
resonance in the quantum well structures is developed for a strong magnetic
field. In the first part, we calculate the absorption band...
The article consists of two parts describing two associated properties of
two-dimensional magnetoexcitons. In the first part, the theory of combined excitoncyclotron
resonance in the quantum well structures is developed for a strong magnetic
field. In the first part, we calculate the absorption band structure for optical quantum
transitions with circularly polarized radiation creating a two-dimensional exciton and
simultaneously exciting one of the resident electrons from the lowest to the first excited
Landau level. In the second part, we discuss the collective elementary excitations of the
system of two-dimensional magnetoexcitons in the ground state of Bose–Einstein
condensation on the arbitrary wave vector k 0 in the Hartree–Fock approximation. The
breaking of the gauge symmetry of the initial Hamiltonian was introduced following the
idea proposed by Bogoliubov in his theory of quasi-averages. The energy spectrum of the
collective elementary excitations is characterized by the interconnection of the exciton and
plasmon branches.
International Journal of Quantum Chemistry, Vol 110, 177–194 (2010)