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Title: Thermodynamic theory of the plasmoelectric effect

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep23283· OSTI ID:1255224
 [1];  [2];  [3];  [1]
  1. FOM Institute AMOLF, Amsterdam (Netherlands)
  2. California Institute of Technology, Pasadena, CA (United States); Texas A & M Univ., College Station, TX (United States)
  3. California Institute of Technology, Pasadena, CA (United States)

Resonant metal nanostructures exhibit an optically induced electrostatic potential when illuminated with monochromatic light under off-resonant conditions. This plasmoelectric effect is thermodynamically driven by the increase in entropy that occurs when the plasmonic structure aligns its resonant absorption spectrum with incident illumination by varying charge density. As a result, the elevated steady-state temperature of the nanostructure induced by plasmonic absorption is further increased by a small amount. Here, we study in detail the thermodynamic theory underlying the plasmoelectric effect by analyzing a simplified model system consisting of a single silver nanoparticle. We find that surface potentials as large as 473 mV are induced under 100 W/m2 monochromatic illumination, as a result of a 11 mK increases in the steady-state temperature of the nanoparticle. Hence, we discuss the applicability of this analysis for realistic experimental geometries, and show that this effect is generic for optical structures in which the resonance is linked to the charge density.

Research Organization:
California Institute of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-07ER46405
OSTI ID:
1255224
Journal Information:
Scientific Reports, Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Cited By (3)

Optically Governed Dynamic Surface Charge Redistribution of Hybrid Plasmo‐Pyroelectric Nanosystems journal July 2019
Arbitrary control of the diffusion potential between a plasmonic metal and a semiconductor by an angstrom-thick interface dipole layer journal January 2020
Quantum mechanical investigation of optoelectronic properties of gold nanoparticle attached titanium dioxide nanorods for device applications journal January 2018