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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • 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

  • 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

  • UT code for WoS article

    000424017500001

  • EID of the result in the Scopus database

    2-s2.0-85041901650