Collection of indirect excitons in a diamond-shaped electrostatic trap

Autor:	High, A. A., Thomas, A. K., Grosso, G., Remeika, M., Hammack, A. T., Meyertholen, A. D., Fogler, M. M., Butov, L. V., Hanson, M., Gossard, A. C.
Rok vydání:	2009
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. Lett. 103, 087403 (2009)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.103.087403
Popis:	We report on the principle and realization of a new trap for excitons -- the diamond electrostatic trap -- which uses a single electrode to create a confining potential for excitons. We also create elevated diamond traps which permit evaporative cooling of the exciton gas. We observe collection of excitons towards the trap center with increasing exciton density. This effect is due to screening of disorder in the trap by the excitons. As a result, the diamond trap behaves as a smooth parabolic potential which realizes a cold and dense exciton gas at the trap center. Comment: 4 Pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0906.0639 Zobrazit plný text záznamu View this record from Arxiv