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A graphene resonato...
A graphene resonator as an ultrasound detector for generalized Love waves in a polymer film with two level states
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- Laitinen, Antti (author)
- Aalto-Yliopisto,Aalto University
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- Kaikkonen, Jukka-Pekka (author)
- Aalto-Yliopisto,Aalto University
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- Abhilash, Thanniyil S. (author)
- Aalto-Yliopisto,Aalto University
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- Todoshchenko, Igor (author)
- Aalto-Yliopisto,Aalto University
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- Manninen, Juuso (author)
- Aalto-Yliopisto,Aalto University
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- Zavyalov, Vladislav (author)
- Aalto-Yliopisto,Aalto University
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- Savin, Alexander (author)
- Aalto-Yliopisto,Aalto University
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- Isacsson, Andreas, 1975 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Hakonen, Pertti J. (author)
- Aalto-Yliopisto,Aalto University
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(creator_code:org_t)
- 2019-04-04
- 2019
- English.
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In: Journal of Physics D: Applied Physics. - : IOP Publishing. - 1361-6463 .- 0022-3727. ; 52:24
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Abstract
Subject headings
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- We have investigated surface shear waves at 22 MHz in a 0.5 micron thick polymer film on a SiO2/Si substrate at low temperatures using suspended and non-suspended graphene as detectors. By tracking ultrasound modes detected by oscillations of a trilayer graphene membrane both in vacuum and in helium superfluid, we assign the resonances to surface shear modes, generalized Love waves, in the resist/silicon-substrate system loaded with gold. The propagation velocity of these shear modes displays a logarithmic temperature dependence below 1 K, which is characteristic for modification of the elastic properties of a disordered solid owing to a large density of two level state systems. For the dissipation of the shear mode, we find a striking logarithmic temperature dependence, which indicates a basic relation between the speed of the surface wave propagation and the mode dissipation.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- low temperatures
- Love wave
- shear mode
- graphene
- LOR
- two level system
Publication and Content Type
- art (subject category)
- ref (subject category)
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