Single-particle plasmon resonance spectroscopy of phase transition in vanadium dioxide

被引：70

作者：

Lei, Dang Yuan ^{[1
]}

Appavoo, Kannatassen ^{[2
]}

Sonnefraud, Yannick ^{[1
]}

Haglund, Richard F., Jr. ^{[2
]}

Maier, Stefan A. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

来源：

OPTICS LETTERS | 2010年 / 35卷 / 23期

基金：

英国工程与自然科学研究理事会; 美国国家科学基金会;

关键词：

INSULATOR-TRANSITION; VO2;

D O I：

10.1364/OL.35.003988

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate thermally controlled plasmon resonance modulation of single gold nanoparticles on vanadium dioxide thin films by performing dark-field spectroscopy measurements at different temperatures. The plasmon resonance of the nanoparticles exhibits a significant blueshift in the visible range when the vanadium dioxide film undergoes its insulator-to-metal phase transition around 67 degrees C. More importantly, the resonance shift shows a clear hysteresis, mirroring the behavior of the vanadium dioxide film. At a fixed wavelength, the scattering intensity of Au particles also shows a hysteretic behavior decorated with an overshoot before (after) the insulator-metal (metal-insulator) phase transition of the vanadium dioxide film, suggesting that the nanoparticle is probing local variations in the phase transition. (C) 2010 Optical Society of America

引用

页码：3988 / 3990

页数：3

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