Ultrafast study of electron-phonon coupling in colloidal gold particles

被引：157

作者：

Hodak, J ^{[1
]}

Martini, I ^{[1
]}

Hartland, GV ^{[1
]}

机构：

[1] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 284卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(97)01369-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The hot electron dynamics in 11 +/- 2 nm diameter Au particles has been examined by transient absorption and bleach recovery measurements. These experiments show that the timescale for energy relaxation by electron-phonon coupling decreases as the pump laser power decreases, and that the relaxation time is independent of the pump or probe wavelength at low pump power. The electron-phonon relaxation time measured in our experiments (similar to 650 fs) is very similar to the time constant obtained from experiments with bulk gold samples. These observations are explained using the two-temperature model for electron-phonon coupling. (C) 1998 Elsevier Science B.V.

引用

页码：135 / 141

页数：7

共 35 条

[1] Effect of cobalt-59 self-decoupling on the solid-state 31P CP/MAS NMR spectra of cobaloximes [J].

Schurko, Robert W. ;

Wasylishen, Roderick E. ;

Nelson, John H. .

Journal of physical chemistry, 1996, 100 (20) :8053-8056

[2] Perspectives on the physical chemistry of semiconductor nanocrystals [J].

Alivisatos, AP .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (31) :13226-13239

[3] Optical absorption spectra of nanocrystal gold molecules [J].

Alvarez, MM ;

Khoury, JT ;

Schaaff, TG ;

Shafigullin, MN ;

Vezmar, I ;

Whetten, RL .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (19) :3706-3712

[4]

Ashcroft N.W., 1976, Solid state physics Holt, Rinehart and Winston, Vfirst

[5] SURFACE ELECTRON PHONON ENERGY EXCHANGE IN SMALL METALLIC PARTICLES [J].

BELOTSKII, ED ;

TOMCHUK, PM .

INTERNATIONAL JOURNAL OF ELECTRONICS, 1992, 73 (05) :955-957

[6] ELECTRON DYNAMICS IN COPPER METALLIC NANOPARTICLES PROBED WITH FEMTOSECOND OPTICAL PULSES [J].

BIGOT, JY ;

MERLE, JC ;

CREGUT, O ;

DAUNOIS, A .

PHYSICAL REVIEW LETTERS, 1995, 75 (25) :4702-4705

[7] FEMTOSECOND ELECTRONIC HEAT-TRANSPORT DYNAMICS IN THIN GOLD-FILMS [J].

BRORSON, SD ;

FUJIMOTO, JG ;

IPPEN, EP .

PHYSICAL REVIEW LETTERS, 1987, 59 (17) :1962-1965

[8] Reversible tuning of silver quantum dot monolayers through the metal-insulator transition [J].

Collier, CP ;

Saykally, RJ ;

Shiang, JJ ;

Henrichs, SE ;

Heath, JR .

SCIENCE, 1997, 277 (5334) :1978-1981

[9] FEMTOSECOND THERMOREFLECTIVITY AND THERMOTRANSMISSIVITY OF POLYCRYSTALLINE AND SINGLE-CRYSTALLINE GOLD-FILMS [J].

ELSAYEDALI, HE ;

JUHASZ, T ;

SMITH, GO ;

BRON, WE .

PHYSICAL REVIEW B, 1991, 43 (05) :4488-4491

[10] TIME-RESOLVED OBSERVATION OF ELECTRON-PHONON RELAXATION IN COPPER [J].

ELSAYEDALI, HE ;

NORRIS, TB ;

PESSOT, MA ;

MOUROU, GA .

PHYSICAL REVIEW LETTERS, 1987, 58 (12) :1212-1215

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