@misc{MTMT:33111090, title = {Visible-frequency graphene plasmons}, url = {https://m2.mtmt.hu/api/publication/33111090}, author = {Dobrik, Gergely and Nemes Incze, Péter and Majérus, Bruno and Süle, Péter and Vancsó, Péter and Piszter, Gábor and Menyhárd, Miklós and Kalas, Benjamin and Petrik, Péter and Henrard, Luc and Tapasztó, Levente}, unique-id = {33111090}, year = {2022}, orcid-numbers = {Dobrik, Gergely/0000-0002-6690-274X; Nemes Incze, Péter/0000-0002-1222-3020; Vancsó, Péter/0000-0003-4333-9787; Piszter, Gábor/0000-0001-7155-4025; Menyhárd, Miklós/0000-0003-4581-5337; Petrik, Péter/0000-0002-5374-6952; Tapasztó, Levente/0000-0002-9377-8465} } @misc{MTMT:32816824, title = {Observation of visible-frequency graphene plasmons in nanocorrugated graphene}, url = {https://m2.mtmt.hu/api/publication/32816824}, author = {Tapasztó, Levente and Dobrik, Gergely and Nemes Incze, Péter and Majerus, Bruno and Süle, Péter and Vancsó, Péter and Henrard, Luc}, unique-id = {32816824}, year = {2022}, orcid-numbers = {Tapasztó, Levente/0000-0002-9377-8465; Dobrik, Gergely/0000-0002-6690-274X; Nemes Incze, Péter/0000-0002-1222-3020; Vancsó, Péter/0000-0003-4333-9787} } @article{MTMT:32100733, title = {Large-area nanoengineering of graphene corrugations hosting visible-frequency graphene plasmons}, url = {https://m2.mtmt.hu/api/publication/32100733}, author = {Dobrik, Gergely and Nemes Incze, Péter and Majerus, B and Süle, Péter and Vancsó, Péter and Piszter, Gábor and Menyhárd, Miklós and Kalas, Benjamin and Petrik, Péter and Henrard, L and Tapasztó, Levente}, doi = {10.1038/s41565-021-01007-x}, journal-iso = {NAT NANOTECHNOL}, journal = {NATURE NANOTECHNOLOGY}, volume = {17}, unique-id = {32100733}, issn = {1748-3387}, year = {2022}, eissn = {1748-3395}, pages = {61-66}, orcid-numbers = {Dobrik, Gergely/0000-0002-6690-274X; Nemes Incze, Péter/0000-0002-1222-3020; Vancsó, Péter/0000-0003-4333-9787; Piszter, Gábor/0000-0001-7155-4025; Menyhárd, Miklós/0000-0003-4581-5337; Petrik, Péter/0000-0002-5374-6952; Tapasztó, Levente/0000-0002-9377-8465} } @CONFERENCE{MTMT:32185471, title = {T6: Thin film growth mechanism and models, new approaches Fine gas inlet regulation down to base pressure of a sputtering system by means of a peristaltic pump}, url = {https://m2.mtmt.hu/api/publication/32185471}, author = {Sáfrán, György and Szász, Noémi and Dobrik, Gergely and Serényi, Miklós}, booktitle = {Book of Abstracts, 18TH INTERNATIONAL CONFERENCE ON THIN FILMS & 18TH JOINT VACUUM CONFERENCE}, unique-id = {32185471}, year = {2020}, pages = {126-128}, orcid-numbers = {Sáfrán, György/0000-0003-3708-3551; Dobrik, Gergely/0000-0002-6690-274X; Serényi, Miklós/0000-0003-4684-3452} } @inproceedings{MTMT:31798272, title = {Self-regulating gas dosage for reactive RF sputtering of composition spread Hf oxy-nitride combinatorial layers}, url = {https://m2.mtmt.hu/api/publication/31798272}, author = {Sáfrán, György and Szász, Noémi and Dobrik, Gergely and Kalas, Benjamin and Serényi, Miklós}, booktitle = {Proceedings of Anyagtudományi Szimpózium}, unique-id = {31798272}, year = {2020}, pages = {41-44}, orcid-numbers = {Sáfrán, György/0000-0003-3708-3551; Dobrik, Gergely/0000-0002-6690-274X; Serényi, Miklós/0000-0003-4684-3452} } @article{MTMT:31779701, title = {Robust quantum point contact operation of narrow graphene constrictions patterned by AFM cleavage lithography}, url = {https://m2.mtmt.hu/api/publication/31779701}, author = {Kun, Péter and Fülöp, Bálint and Dobrik, Gergely and Nemes Incze, Péter and Lukács, István Endre and Csonka, Szabolcs and Hwang, Chanyong and Tapasztó, Levente}, doi = {10.1038/s41699-020-00177-x}, journal-iso = {NPJ 2D MATER APPL}, journal = {NPJ 2D MATERIALS AND APPLICATIONS}, volume = {4}, unique-id = {31779701}, year = {2020}, eissn = {2397-7132}, orcid-numbers = {Fülöp, Bálint/0000-0001-6853-2642; Dobrik, Gergely/0000-0002-6690-274X; Nemes Incze, Péter/0000-0002-1222-3020; Lukács, István Endre/0000-0002-4985-4475; Tapasztó, Levente/0000-0002-9377-8465} } @article{MTMT:31426164, title = {Ultra-flat twisted superlattices in 2D heterostructures}, url = {https://m2.mtmt.hu/api/publication/31426164}, author = {Szendrő, Márton and Süle, Péter and Dobrik, Gergely and Tapasztó, Levente}, doi = {10.1038/s41524-020-00364-w}, journal-iso = {NPJ COMPUT MATER}, journal = {NPJ COMPUTATIONAL MATERIALS}, volume = {6}, unique-id = {31426164}, issn = {2057-3960}, abstract = {Moire-superlattices are ubiquitous in 2D heterostructures, strongly influencing their electronic properties. They give rise to new Dirac cones and are also at the origin of the superconductivity observed in magic-angle bilayer graphene. The modulation amplitude (corrugation) is an important yet largely unexplored parameter in defining the properties of 2D superlattices. The generally accepted view is that the corrugation monotonically decreases with increasing twist angle, while its effects on the electronic structure diminish as the layers become progressively decoupled. Here we found by lattice relaxation of around 8000 different Moire-superstructures using high scale Classical Molecular Simulations combined with analytical calculations, that even a small amount of external strain can substantially change this picture, giving rise to more complex behavior of superlattice corrugation as a function of twist angle. One of the most surprising findings is the emergence of an ultra-flat phase that can be present for arbitrary small twist angle having a much lower corrugation level than the decoupled phase at large angles. Furthermore, Moire-phase maps evidence that the state with no external strain is located in the close vicinity of a triple Moire-phase boundary, implying that very small external strain variations can cause drastic changes in the realized superlattice morphology and corrugation. This renders the practical realization of 2D heterostructures with large-area homogeneous superlattice morphology highly challenging.}, year = {2020}, eissn = {2057-3960}, orcid-numbers = {Dobrik, Gergely/0000-0002-6690-274X; Tapasztó, Levente/0000-0002-9377-8465} } @article{MTMT:31407536, title = {Smart gas dosage by a peristaltic pump for reactive RF sputtering of composition spread combinatorial hafnium-oxy-nitride layers}, url = {https://m2.mtmt.hu/api/publication/31407536}, author = {Sáfrán, György and Szász, Noémi and Dobrik, Gergely and Kalas, Benjamin and Serényi, Miklós}, doi = {10.1016/j.vacuum.2020.109675}, journal-iso = {VACUUM}, journal = {VACUUM}, volume = {182}, unique-id = {31407536}, issn = {0042-207X}, abstract = {Thin metal-oxy-nitride layers are widely used for wavelength selective optical coatings. We aimed to prepare composition spread metal-oxy-nitride combinatorial layers by reactive radiofrequency sputtering for a highly efficient characterization of their optical properties in a wide range of O/N ratios. Affinity of metals requires oxygen proportion, in the Ar-O-N plasma, be set orders of magnitude lower compared to nitrogen. The required low partial pressure range of oxygen was covered by a new concept self-regulating gas inlet assembly based on a peristaltic pump delivering gas from a finite volume vial. Accordingly, oxygen partial pressure was gradually decreasing from 8 × 10−5 mbar towards the base pressure of the chamber. It effected a continuous oxygen depletion and a transition of the deposited film from oxide to nitride. The suitability of our combinatorial method was proved by both energy dispersive spectrometry mapping and ellipsometry of the correlated refractive indices along a composition-spread HfON sample.}, keywords = {RF sputtering; Composition spread sample; Peristaltic pump; Oxy-nitrides; Self-controlled reactive gas inlet}, year = {2020}, eissn = {1879-2715}, orcid-numbers = {Sáfrán, György/0000-0003-3708-3551; Dobrik, Gergely/0000-0002-6690-274X; Serényi, Miklós/0000-0003-4684-3452} } @article{MTMT:30864570, title = {Moderate strain induced indirect bandgap and conduction electrons in MoS2 single layers}, url = {https://m2.mtmt.hu/api/publication/30864570}, author = {Pető, János and Dobrik, Gergely and Kukucska, Gergő and Vancsó, Péter and Koós, Antal Adolf and Koltai, János and Nemes Incze, Péter and Hwang, Chanyong and Tapasztó, Levente}, doi = {10.1038/s41699-019-0123-5}, journal-iso = {NPJ 2D MATER APPL}, journal = {NPJ 2D MATERIALS AND APPLICATIONS}, volume = {3}, unique-id = {30864570}, year = {2019}, eissn = {2397-7132}, orcid-numbers = {Dobrik, Gergely/0000-0002-6690-274X; Kukucska, Gergő/0000-0002-8715-8075; Vancsó, Péter/0000-0003-4333-9787; Koós, Antal Adolf/0000-0003-0563-948X; Koltai, János/0000-0003-2576-9740; Nemes Incze, Péter/0000-0002-1222-3020; Tapasztó, Levente/0000-0002-9377-8465} } @article{MTMT:30854315, title = {Influence of Native Defects on the Electronic and Magnetic Properties of CVD Grown MoSe2 Single Layers}, url = {https://m2.mtmt.hu/api/publication/30854315}, author = {Koós, Antal Adolf and Vancsó, Péter and Szendrő, Márton and Dobrik, Gergely and Antognini, Silva D. and Popov, Z.I. and Sorokin, P.B. and Henrard, L. and Hwang, C. and Biró, László Péter and Tapasztó, Levente}, doi = {10.1021/acs.jpcc.9b05921}, journal-iso = {J PHYS CHEM C}, journal = {JOURNAL OF PHYSICAL CHEMISTRY C}, volume = {123}, unique-id = {30854315}, issn = {1932-7447}, year = {2019}, eissn = {1932-7455}, pages = {24855-24864}, orcid-numbers = {Koós, Antal Adolf/0000-0003-0563-948X; Vancsó, Péter/0000-0003-4333-9787; Dobrik, Gergely/0000-0002-6690-274X; Biró, László Péter/0000-0001-7261-0420; Tapasztó, Levente/0000-0002-9377-8465} }