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Terahertz Quantum Plasmonics of Nanoslot Antennas in Nonlinear Regime

Title
Terahertz Quantum Plasmonics of Nanoslot Antennas in Nonlinear Regime
Author
전형탁
Keywords
aluminum oxide; metal−insulator−metal tunneling; quantum plasmonics; terahertz nanoslot antenna; Terahertz nonlinearity
Issue Date
2015-10
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v. 15, NO 10, Page. 6683-6688
Abstract
Quantum tunneling in plasmonic nanostructures has presented an interesting aspect of incorporating quantum mechanics into classical optics. However, the study has been limited to the subnanometer gap regime. Here, we newly extend quantum plasmonics to gap widths well over 1 nm by taking advantage of the low-frequency terahertz regime. Enhanced electric fields of up to 5 V/nm induce tunneling of electrons in different arrays of ring-shaped nanoslot antennas of gap widths from 1.5 to 10 nm, which lead to a significant nonlinear transmission decrease. These observations are consistent with theoretical calculations considering terahertz-funneling-induced electron tunneling across the gap.
URI
http://pubs.acs.org/doi/10.1021/acs.nanolett.5b02505http://hdl.handle.net/20.500.11754/28205
ISSN
1530-6984; 1530-6992
DOI
10.1021/acs.nanolett.5b02505
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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