Quantum mechanical effects in plasmonic structures with subnanometre gaps

被引:683
作者
Zhu, Wenqi [1 ,2 ]
Esteban, Ruben [3 ,4 ]
Borisov, Andrei G. [3 ,4 ,5 ]
Baumberg, Jeremy J. [6 ]
Nordlander, Peter [7 ]
Lezec, Henri J. [1 ]
Aizpurua, Javier [3 ,4 ]
Crozier, Kenneth B. [8 ,9 ]
机构
[1] NIST, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA
[2] Univ Maryland, Maryland Nanoctr, College Pk, MD 20742 USA
[3] Univ Basque Country, CSIC, Ctr Phys Mat, Paseo Manuel Lardizabal 5, Donostia San Sebastian 20018, Spain
[4] DIPC, Paseo Manuel Lardizabal 5, Donostia San Sebastian 20018, Spain
[5] Univ Paris 11, CNRS, Inst Sci Mol Orsay, UMR 8214, Batiment 351, F-91405 Orsay, France
[6] Univ Cambridge, Cavendish Lab, Nanophoton Ctr, Cambridge CB3 0HE, England
[7] Rice Univ, Dept Phys, Lab Nanophoton, MS61, Houston, TX 77005 USA
[8] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia
[9] Univ Melbourne, Dept Elect & Elect Engn, Melbourne, Vic 3010, Australia
基金
英国工程与自然科学研究理事会; 澳大利亚研究理事会;
关键词
ENHANCED RAMAN-SCATTERING; SCANNING-TUNNELING-MICROSCOPY; SINGLE-MOLECULE JUNCTIONS; GOLD NANOPARTICLE DIMERS; FIELD ENHANCEMENT; OPTICAL-PROPERTIES; NANOWIRE DIMERS; ATOMIC-SCALE; ELECTROMAGNETIC-FIELDS; SILVER NANOPARTICLES;
D O I
10.1038/ncomms11495
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
Metallic structures with nanogap features have proven highly effective as building blocks for plasmonic systems, as they can provide a wide tuning range of operating frequencies and large near-field enhancements. Recent work has shown that quantum mechanical effects such as electron tunnelling and nonlocal screening become important as the gap distances approach the subnanometre length-scale. Such quantum effects challenge the classical picture of nanogap plasmons and have stimulated a number of theoretical and experimental studies. This review outlines the findings of many groups into quantum mechanical effects in nanogap plasmons, and discusses outstanding challenges and future directions.
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页数:14
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