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Laser-excited acoustic oscillations in silver and bismuth nanowires

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Title: Laser-excited acoustic oscillations in silver and bismuth nanowires
Author: Jerebtsov, Sergey N.; Kolomenskii, Alexandre A.; Liu, Haidong; Zhang, Hong; Ye, Zuxin; Luo, Zhiping; Wu, Wenhao; Paulus, Gerhard G.; Schuessler, Hans A.
Abstract: Coherent acoustic oscillations in Bi and Ag nanowire samples were studied with a femtosecond pump-probe technique and detection of the scattered light. The observed optical and acoustic properties reflect the nanostructure of these materials. The electronic and lattice contributions to the excitation of coherent acoustic phonons are described using a two-temperature model. The excitation is performed at different laser fluences, and the high density of optically induced excitations modifies the state of the lattice. A transient state with softening of the lattice was observed in Ag nanowire samples.
Description: Journals published by the American Physical Society can be found at http://journals.aps.org/
Publisher: American Physical Society
Subject: ELASTIC CONSTANTS
METAL NANOPARTICLES
LIGHT-SCATTERING
GOLD
DYNAMICS
ELECTRON
EXCITATION
PARTICLES
NANORODS
NANOCRYSTALS
Physics
Department: Physics and Astronomy
URI: http://dx.doi.org/10.1103/PhysRevB.76.184301
Date: 2007

Citation

Sergey N. Jerebtsov, Alexandre A. Kolomenskii, Haidong Liu, Hong Zhang, Zuxin Ye, Zhiping Luo, Wenhao Wu, Gerhard G. Paulus and Hans A. Schuessler. Phys.Rev.B 76 184301 2007."Copyright (2007) by the American Physical Society."

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