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Possible charge ordering and anomalous transport in graphene/graphene quantum dot heterostructure
dc.contributor.author | Gómez Pérez, Inmaculada Jénnifer | |
dc.contributor.author | Roy, Rajarshi | |
dc.contributor.author | Holec, David | |
dc.contributor.author | Michal, Lukáš | |
dc.contributor.author | Hemzal, Dušan | |
dc.contributor.author | Sarkar, Saikat | |
dc.contributor.author | Gundam, Sandeep Kumar | |
dc.contributor.author | Nečas, David | |
dc.contributor.author | Dhankhar, Meena | |
dc.contributor.author | Kaushik, Preeti | |
dc.contributor.author | Zajickova, Lenka | |
dc.date.accessioned | 2024-08-14T08:45:15Z | |
dc.date.available | 2024-08-14T08:45:15Z | |
dc.date.issued | 2024 | |
dc.identifier.citation | Roy, R., Holec, D., Michal, L., Hemzal, D., Sarkar, S., Sandeep Kumar, G., Nečas, D., Dhankhar, M., Kaushik, P., Jénnifer Gómez, & Zajíčková, L. (2024). Possible charge ordering and anomalous transport in graphene/graphene quantum dot heterostructure. Journal of Physics Condensed Matter, 36(26). https://doi.org/10.1088/1361-648X/AD31BF | es_ES |
dc.identifier.uri | http://hdl.handle.net/2183/38588 | |
dc.description.abstract | [Abstract] 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 (T1 ∼ 213K, T2 ∼ 325K) 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 ∼ 0.05 eV above the Fermi level (ab initio simulations) and carrier density n ∼ −0.3 × 1012 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) ramework. Our results provide impetus to investigate strongly correlated phenomena such as CDW and superconducting phase transitions in novel graphene based heterostructures. | es_ES |
dc.description.sponsorship | R R would like to acknowledge funding by European Regional Development Fund-Project 'MSCAfellow2@MUNI' (No. CZ.02.2.69/0.0/0.0/18070/0009846). I J G would like to thank for the support of the Operational Program Research, Development and Education Project 'MSCAfellow4@MUNI' (CZ.02.2.69/0.0/0.0/20079/0017045) and the Spanish Ministry of Universities for Beatriz Galindo (BG22/000147) and Maria Zambrano funding (RSU.UDC.MZ09 [RSU.UDC.MZ11]) transferred by the European Union Next Generation EU. We acknowledge CzechNanoLab Research Infrastructure supported by MEYS CR (LM2023051) to carry out this research. The computational results presented have been achieved using the Vienna Scientific Cluster (VSC). The authors would like to acknowledge Sumit Mandal, Vidyasagar College, Calcutta University, Subhajit Saha from the Department of Renewable energy, Maulana Abul Kalam Azad University, West Bengal, India and Jan Michalička, CEITEC Brno University of Technology, Brno 61200, Czechia for helpful discussions during this work. | es_ES |
dc.description.sponsorship | Česká republika. Ministerstvo školství, mládeže a tělovýchovy České republiky; LM2023051 | es_ES |
dc.language.iso | eng | es_ES |
dc.relation | info:eu-repo/grantAgreement/MUNI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/BG22%2F00147/ES | es_ES |
dc.relation.uri | https://doi.org/10.1088/1361-648X/AD31BF | es_ES |
dc.rights | Creative Commons Attribution 4.0 licence | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | Graphene | es_ES |
dc.subject | Graphene quantum dots | es_ES |
dc.subject | Heterostructure | es_ES |
dc.subject | Charge ordering | es_ES |
dc.subject | Raman spectroscopy | es_ES |
dc.subject | Low temperature transport | es_ES |
dc.subject | Ab initio simulation | es_ES |
dc.title | Possible charge ordering and anomalous transport in graphene/graphene quantum dot heterostructure | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.access | info:eu-repo/semantics/openAccess | es_ES |
UDC.journalTitle | Journal of Physics Condensed Matter | es_ES |
UDC.volume | 36 | es_ES |
UDC.issue | 26 | es_ES |
UDC.startPage | 5601 | es_ES |
dc.identifier.doi | 10.1088/1361-648X/AD31BF |