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Title: Direct Observation of Infrared Plasmonic Fano Antiresonances by a Nanoscale Electron Probe

Journal Article · · Physical Review Letters
ORCiD logo [1]; ORCiD logo [2];  [2]; ORCiD logo [3]; ORCiD logo [4];  [5]; ORCiD logo [6]; ORCiD logo [7]; ORCiD logo [3]
  1. Univ. of Washington, Seattle, WA (United States); Dept. of Physics
  2. Univ. of Notre Dame, IN (United States). Dept. of Chemistry and Biochemistry
  3. Univ. of Washington, Seattle, WA (United States). Dept. of Chemistry
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
  5. Univ. of Tennessee, Knoxville, TN (United States) Dept. of Materials Science and Engineering
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS) Dept. of Materials Science and Engineering
  7. Univ. of Notre Dame, IN (United States). Dept. of Chemistry and Biochemistry; Univ. of Tennessee, Knoxville, TN (United States) Dept of Materials Science and Engineering

In this report, we exploit recent breakthroughs in monochromated aberration-corrected scanning transmission electron microscopy (STEM) to resolve infrared plasmonic Fano antiresonances in individual nanofabricated disk-rod dimers. Using a combination of electron energy-loss spectroscopy and theoretical modeling, we investigate and characterize a subspace of the weak coupling regime between quasi-discrete and quasi-continuum localized surface plasmon resonances where infrared plasmonic Fano antiresonances appear. Our research illustrates the capability of STEM instrumentation to experimentally observe nanoscale plasmonic responses that were previously the domain only of higher-resolution infrared spectroscopies.

Research Organization:
Univ. of Washington, Seattle, WA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Notre Dame, IN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
SC0018040; AC05-00OR22725; SC0018169
OSTI ID:
1597420
Alternate ID(s):
OSTI ID: 1907178
Journal Information:
Physical Review Letters, Vol. 123, Issue 17; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

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Figures / Tables (3)