- Conference date: 3–5 November 2010
- Location: Bad Honnef, (Germany)
Spatial nonlocality is known to play an important role at distances of a few nanometers, but few efforts have been made to theoretically investigate nonlocal effects in a rigorous way. We explore the effect of nonlocal response, which can be critical in the optical performance of metals at distances of 1–2 nanometers. This is particularly significant in situations for which small regions dominate the response of a larger structure. We present two different approaches to account for nonlocality in metal nanoparticles: (i) the non‐retarded specular reflection model (SRM) and (ii) the fully retarded hydrodynamical model. Comparison with available experiments results in excellent agreement with our parameter‐free modelling of nonlocal effects, which produce dramatic changes with respect to the customary local theory. We show that nonlocal effects in both models produce sizable plasmon blue shift and broadening in single metal nanoparticles as well as in dimers and shell structures. The hydrodynamical model in particular offers a way to include smooth electron distributions at surfaces and is therefore a competitor to ab initio methods.
- Hydrological modeling
- Metal optics
- Ab initio calculations
- Blue shift
Daniel Baumann, Mark G. Jackson, Peter Adshead, Alexandre Amblard, Amjad Ashoorioon, Nicola Bartolo, Rachel Bean, Maria Beltrán, Francesco de Bernardis, Simeon Bird, Xingang Chen, Daniel J. H. Chung, Loris Colombo, Asantha Cooray, Paolo Creminelli, Scott Dodelson, Joanna Dunkley, Cora Dvorkin, Richard Easther, Fabio Finelli, Raphael Flauger, Mark P. Hertzberg, Katherine Jones‐Smith, Shamit Kachru, Kenji Kadota, Justin Khoury, William H. Kinney, Eiichiro Komatsu, Lawrence M. Krauss, Julien Lesgourgues, Andrew Liddle, Michele Liguori, Eugene Lim, Andrei Linde, Sabino Matarrese, Harsh Mathur, Liam McAllister, Alessandro Melchiorri, Alberto Nicolis, Luca Pagano, Hiranya V. Peiris, Marco Peloso, Levon Pogosian, Elena Pierpaoli, Antonio Riotto, Uroš Seljak, Leonardo Senatore, Sarah Shandera, Eva Silverstein, Tristan Smith, Pascal Vaudrevange, Licia Verde, Ben Wandelt, David Wands, Scott Watson, Mark Wyman, Amit Yadav, Wessel Valkenburg and Matias Zaldarriaga
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