Publication: Optical bistability and hysteresis of a hybrid metal-semiconductor nanodimer
Loading...
Official URL
Full text at PDC
Publication Date
2011-07-26
Authors
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Citations
Exportar
Abstract
Optical response of an artificial composite nanodimer comprising a semiconductor quantum dot and a metal nanosphere is analyzed theoretically. We show that internal degrees of freedom of the system can manifest bistability and optical hysteresis as functions of the incident field intensity. We argue that these effects can be observed for real-world systems, such as a CdSe quantum dot and an Au nanoparticle hybrid. These properties can be revealed by measuring the optical hysteresis of Rayleigh scattering. We also show that the total dipole moment of the system can be switched abruptly between its two stable states by small changes in the excitation intensity. The latter promises various applications in the field of all-optical processing at the nanoscale, the most basic of them being the volatile optical memory.
Description
©2011 American Physical Society.
A.V.M. acknowledges support from projects MOSAICO (FIS2006-01485) and BSCH-UCM (PR58/08) and the Ramón y Cajal program (Ministerio de Ciencia e Innovación de España) and is grateful to the University of Groningen for hospitality.