Possible charge ordering and anomalous transport in graphene/graphene quantum dot heterostructure

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F24%3APU151187" target="_blank" >RIV/00216305:26620/24:PU151187 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/24:00617649 RIV/00216224:14310/24:00138693
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1361-648X/ad31bf" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-648X/ad31bf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-648X/ad31bf" target="_blank" >10.1088/1361-648X/ad31bf</a>

Result language
angličtina
Original language name
Possible charge ordering and anomalous transport in graphene/graphene quantum dot heterostructure
Original language description
Observations of superconductivity and charge density waves (CDW) in graphene have been elusive thus far due to weak electron-phonon coupling (EPC) interactions. Here, we report a unique observation of anomalous transport and multiple charge ordering phases at high temperatures ( T 1 similar to 213 K , T 2 similar to 325 K ) in a 0D-2D van der Waals (vdW) heterostructure comprising of single layer graphene (SLG) and functionalized (amine) graphene quantum dots (GQD). The presence of functionalized GQD contributed to charge transfer with shifting of the Dirac point similar to 0.05 eV above the Fermi level (ab initio simulations) and carrier density n similar to - 0.3 x 10 12 cm - 2 confirming p-doping in SLG and two-fold increase in EPC interaction was achieved. Moreover, we elucidate the interplay between electron-electron and electron-phonon interactions to substantiate high temperature EPC driven charge ordering in the heterostructure through analyses of magnetotransport and weak anti-localization (WAL) framework. Our results provide impetus to investigate strongly correlated phenomena such as CDW and superconducting phase transitions in novel graphene based heterostructures.
Czech name
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Czech description
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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.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
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Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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