Phase Diagram of Degenerate Exciton Systems

Autor:	C. W. Lai, J. Zoch, Arthur C. Gossard, Daniel S. Chemla
Rok vydání:	2004
Předmět:	Condensed Matter::Quantum Gases Physics Multidisciplinary Photoluminescence Condensed matter physics Condensed Matter::Other Exciton Degenerate energy levels Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Molecular physics law.invention Condensed Matter::Materials Science law Excitation Bose–Einstein condensate Quantum well Biexciton Phase diagram
Zdroj:	Science. 303:503-506
ISSN:	1095-9203 0036-8075
Popis:	Degenerate exciton systems have been produced in quasi–two-dimensional confined areas in semiconductor coupled quantum well structures. We observed contractions of clouds containing tens of thousands of excitons within areas as small as (10 μm) 2 near 10 kelvin. The spatial and energy distributions of optically active excitons were determined by measuring photoluminescence as a function of temperature and laser excitation and were used as thermodynamic quantities to construct the phase diagram of the exciton system, which demonstrates the existence of distinct phases. Understanding the formation mechanisms of these degenerate exciton systems can open new opportunities for the realization of Bose-Einstein condensation in the solid state.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79c4d8b16f8c96bdd9fb64836584f160 https://doi.org/10.1126/science.1092691 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.