Quantum Plasmon Resonances Controlled by Molecular Tunnel Junctions

被引：396

作者：

Tan, Shu Fen ^{[1
]}

Wu, Lin ^{[2
]}

Yang, Joel K. W. ^{[3
,4
]}

Bai, Ping ^{[2
]}

Bosman, Michel ^{[3
]}

Nijhuis, Christian A. ^{[1
,3
,5
,6
]}

机构：

[1] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore

[2] ASTAR, Inst High Performance Comp, Singapore 138632, Singapore

[3] ASTAR, Inst Mat Res & Engn, Singapore 117602, Singapore

[4] Singapore Univ Technol & Design, Singapore 138682, Singapore

[5] Natl Univ Singapore, Graphene Res Ctr, Singapore 117542, Singapore

[6] Natl Univ Singapore, Solar Energy Res Inst Singapore SERIS, Singapore 117574, Singapore

来源：

SCIENCE | 2014年 / 343卷 / 6178期

基金：

新加坡国家研究基金会;

关键词：

NANOPARTICLES; ENHANCEMENT; SCALE;

D O I：

10.1126/science.1248797

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Quantum tunneling between two plasmonic resonators links nonlinear quantum optics with terahertz nanoelectronics. We describe the direct observation of and control over quantum plasmon resonances at length scales in the range 0.4 to 1.3 nanometers across molecular tunnel junctions made of two plasmonic resonators bridged by self-assembled monolayers (SAMs). The tunnel barrier width and height are controlled by the properties of the molecules. Using electron energy-loss spectroscopy, we directly observe a plasmon mode, the tunneling charge transfer plasmon, whose frequency (ranging from 140 to 245 terahertz) is dependent on the molecules bridging the gaps.

引用

页码：1496 / 1499

页数：4

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