Electronic and mechanical response of graphene on BaTiO3 at martensitic phase transitions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10374662" target="_blank" >RIV/00216208:11320/18:10374662 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/18:00580117
Result on the web
<a href="https://doi.org/10.1088/1361-648X/aaa8b7" target="_blank" >https://doi.org/10.1088/1361-648X/aaa8b7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-648X/aaa8b7" target="_blank" >10.1088/1361-648X/aaa8b7</a>
Alternative languages
Result language
angličtina
Original language name
Electronic and mechanical response of graphene on BaTiO3 at martensitic phase transitions
Original language description
Graphene is extremely sensitive to optical, electrical and mechanical stimuli, which cause a significant variation of the band structure, thus the physiochemical properties. In our work, we report on changes of strain and doping in graphene grown by chemical vapor deposition on copper and transferred onto a BaTiO3(1 0 0) (BTO) single-crystal. The BTO is known as a ferroelectric material, which undergoes several thermoelastic martensitic phase transitions when it is cooled from 300 K to 10 K. In order to enhance the very weak Raman signal of the graphene monolayer (ML) on the BTO, a 15 nm thin gold layer was deposited on top of the graphene ML to benefit from the surface enhanced Raman scattering. Using temperature dependent Raman spectral mapping, the principal Raman modes (D, G and 2D) of the graphene ML were followed in situ. From a careful analysis of these Raman modes, we conclude that the induced strain and doping of the graphene ML follows the martensitic phase transitions of the BTO crystal. Our study suggests potential exploitation of the graphene as a highly sensitive opto-mechanical sensor or transducer.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physics Condensed Matter
ISSN
0953-8984
e-ISSN
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Volume of the periodical
30
Issue of the periodical within the volume
8
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
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UT code for WoS article
000424017500001
EID of the result in the Scopus database
2-s2.0-85041901650