Polaron Relaxation In A Quantum Dot Due To Anharmonic Coupling Within A Mean-Field Approach

Autor:	T. Stauber, M. I. Vasilevskiy, S. S. Makler, E. V. Anda, Marília Caldas, Nelson Studart
Rok vydání:	2010
Předmět:	Condensed Matter::Quantum Gases Physics Condensed matter physics Mean field theory Orders of magnitude (time) Quantum dot Phonon Anharmonicity Relaxation (physics) Coulomb blockade Condensed Matter::Strongly Correlated Electrons Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Polaron
Zdroj:	AIP Conference Proceedings.
ISSN:	0094-243X
DOI:	10.1063/1.3295407
Popis:	We study the electronic relaxation in a quantum dot (QD) within the polaron approach, by focusing on the reversible anharmonic decay of longitudinal optical (LO) phonons (forming the polaron) into longitudinal acoustic (LA) phonons. We obtain an effective decay channel for the electronic (or excitonic) polaron states, with a characteristic time constant which is 2–3 orders of magnitude smaller than previous predictions based on the Fermi’s Golden Rule.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::493dac28e7c61a01ace20c5195698b40 https://doi.org/10.1063/1.3295407 Zobrazit plný text záznamu