Abstract
We have studied theoretically the Bose-Einstein condensation (BEC) of two-dimensional excitons in a ring with a random variation of the effective exciton potential along the circumference. We derive a nonlinear Gross-Pitaevkii equation (GPE) for such a condensate, which is valid even in the presence of a weak magnetic field. For several types of the random potentials our numerical solution of the ground state of the GPE displays a necklace-like structure. This is a consequence of the interplay between the random potential and a strong nonlinear repulsive term of the GPE. We have investigated how the mean distance between modulation peaks depends on properties of the random potentials.
| Original language | English |
|---|---|
| Pages (from-to) | 3797-3802 |
| Number of pages | 6 |
| Journal | International Journal of Modern Physics B |
| Volume | 18 |
| Issue number | 27-29 |
| DOIs | |
| Publication status | Published - 2004 Nov 30 |
Keywords
- Exciton Bose-Einstein condensate
- Modulation of the order parameter
- Random exciton potential
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Mathematical Physics
- Physics and Astronomy (miscellaneous)
- Condensed Matter Physics
- Statistical and Nonlinear Physics
Fingerprint Dive into the research topics of 'Modulation of order parameter of exciton bose-einstein condensate in a ring'. Together they form a unique fingerprint.
Cite this
Yang, S. R., Park, Q. H., & Yeo, J. (2004). Modulation of order parameter of exciton bose-einstein condensate in a ring. International Journal of Modern Physics B, 18(27-29), 3797-3802. https://doi.org/10.1142/S0217979204027475