Crucial Role of Metal Surface Morphology in Photon Emission from a Tunnel Junction at Ambient Conditions
Vitaliy A Shkoldin
1, 2
,
Mikhail Zhukov
1, 3
,
Mikhail V Zhukov
1, 3
,
Aleksandr A Vasiliev
2
,
Alexander O. Golubok
1, 3
,
A. V. Uskov
1, 4
,
Alexey D Bolshakov
2
,
Andrey Bogdanov
1
,
Anton K. Samusev
1
,
Ivan S. Mukhin
1, 2
Publication type: Journal Article
Publication date: 2019-03-11
scimago Q1
wos Q3
SJR: 0.914
CiteScore: 6.2
Impact factor: 3.2
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Abstract
In this paper, we study light emission from a tunnel contact between the Au film on a glass substrate and the Au-coated tungsten probe of the scanning tunneling microscope at ambient conditions. We investigate the dependence of the intensity of the collected optical signal on the film surface morphology, namely, on geometrical parameters of nanometer-scale gold grains (islands) constituting the film. We reveal that the magnitude of inelastic tunnel current and thus photon emission intensity increase both with the decrease of island height and the increase of island width. We show that the difference in the optical emission intensity could reach 4 orders of magnitude for poly- and monocrystalline (atomically flat) samples. The observed phenomena are explained with dependence of the effective area of a tunnel contact on the grain aspect ratio. The obtained results demonstrate the crucial role of the sample morphology in influencing the efficiency of photon emission from the tunnel junction.
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Shkoldin V. A. et al. Crucial Role of Metal Surface Morphology in Photon Emission from a Tunnel Junction at Ambient Conditions // Journal of Physical Chemistry C. 2019. Vol. 123. No. 14. pp. 8813-8817.
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Shkoldin V. A., Permyakov D. V., Ladutenko K. S., Zhukov M., Zhukov M. V., Vasiliev A. A., Golubok A. O., Uskov A. V., Bolshakov A. P., Bolshakov A. D., Bogdanov A., Samusev A. K., Mukhin I. S. Crucial Role of Metal Surface Morphology in Photon Emission from a Tunnel Junction at Ambient Conditions // Journal of Physical Chemistry C. 2019. Vol. 123. No. 14. pp. 8813-8817.
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TY - JOUR
DO - 10.1021/acs.jpcc.8b11271
UR - https://pubs.acs.org/doi/10.1021/acs.jpcc.8b11271
TI - Crucial Role of Metal Surface Morphology in Photon Emission from a Tunnel Junction at Ambient Conditions
T2 - Journal of Physical Chemistry C
AU - Shkoldin, Vitaliy A
AU - Permyakov, Dmitry V
AU - Ladutenko, Konstantin S.
AU - Zhukov, Mikhail
AU - Zhukov, Mikhail V
AU - Vasiliev, Aleksandr A
AU - Golubok, Alexander O.
AU - Uskov, A. V.
AU - Bolshakov, Alexey P.
AU - Bolshakov, Alexey D
AU - Bogdanov, Andrey
AU - Samusev, Anton K.
AU - Mukhin, Ivan S.
PY - 2019
DA - 2019/03/11
PB - American Chemical Society (ACS)
SP - 8813-8817
IS - 14
VL - 123
SN - 1932-7447
SN - 1932-7455
ER -
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@article{2019_Shkoldin,
author = {Vitaliy A Shkoldin and Dmitry V Permyakov and Konstantin S. Ladutenko and Mikhail Zhukov and Mikhail V Zhukov and Aleksandr A Vasiliev and Alexander O. Golubok and A. V. Uskov and Alexey P. Bolshakov and Alexey D Bolshakov and Andrey Bogdanov and Anton K. Samusev and Ivan S. Mukhin},
title = {Crucial Role of Metal Surface Morphology in Photon Emission from a Tunnel Junction at Ambient Conditions},
journal = {Journal of Physical Chemistry C},
year = {2019},
volume = {123},
publisher = {American Chemical Society (ACS)},
month = {mar},
url = {https://pubs.acs.org/doi/10.1021/acs.jpcc.8b11271},
number = {14},
pages = {8813--8817},
doi = {10.1021/acs.jpcc.8b11271}
}
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MLA
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Shkoldin, Vitaliy A., et al. “Crucial Role of Metal Surface Morphology in Photon Emission from a Tunnel Junction at Ambient Conditions.” Journal of Physical Chemistry C, vol. 123, no. 14, Mar. 2019, pp. 8813-8817. https://pubs.acs.org/doi/10.1021/acs.jpcc.8b11271.