@article{MTMT:34538351, title = {Tungsten Carbide Nanolayer Formation by Ion Beam Mixing with Argon and Xenon Ions for Applications as Protective Coatings}, url = {https://m2.mtmt.hu/api/publication/34538351}, author = {Rácz, Adél Sarolta and Kun, Péter and Kerner, Zsolt Gábor and Fogarassy, Zsolt and Menyhárd, Miklós}, doi = {10.1021/acsanm.2c05505}, journal-iso = {ACS APPL NANO MATER}, journal = {ACS APPLIED NANO MATERIALS}, volume = {6}, unique-id = {34538351}, year = {2023}, eissn = {2574-0970}, pages = {3816-3824}, orcid-numbers = {Fogarassy, Zsolt/0000-0003-4981-1237; Menyhárd, Miklós/0000-0003-4581-5337} } @article{MTMT:33090541, title = {Observation of competing, correlated ground states in the flat band of rhombohedral graphite}, url = {https://m2.mtmt.hu/api/publication/33090541}, author = {Hagymási, Imre and Mohd, Isa M.S. and Tajkov, Zoltán and Márity, K. and Oroszlány, László and Koltai, János and Alassaf, A. and Kun, Péter and Kandrai, Konrád and Pálinkás, András and Vancsó, Péter and Tapasztó, Levente and Nemes Incze, Péter}, doi = {10.1126/sciadv.abo6879}, journal-iso = {SCI ADV}, journal = {SCIENCE ADVANCES}, volume = {8}, unique-id = {33090541}, issn = {2375-2548}, year = {2022}, eissn = {2375-2548}, orcid-numbers = {Oroszlány, László/0000-0001-5682-6424; Koltai, János/0000-0003-2576-9740; Vancsó, Péter/0000-0003-4333-9787; Tapasztó, Levente/0000-0002-9377-8465; Nemes Incze, Péter/0000-0002-1222-3020} } @article{MTMT:32210273, title = {In situ tuning of symmetry-breaking-induced nonreciprocity in the giant-Rashba semiconductor BiTeBr}, url = {https://m2.mtmt.hu/api/publication/32210273}, author = {Kocsis, Mátyás and Zheliuk, Oleksandr and Makk, Péter and Tóvári, Endre and Kun, Péter and Tereshchenko, Oleg Evgenevich and Kokh, Konstantin Aleksandrovich and Taniguchi, Takashi and Watanabe, Kenji and Ye, Jianting and Csonka, Szabolcs}, doi = {10.1103/PhysRevResearch.3.033253}, journal-iso = {PRRESEARCH}, journal = {PHYSICAL REVIEW RESEARCH}, volume = {3}, unique-id = {32210273}, year = {2021}, eissn = {2643-1564}, orcid-numbers = {Tóvári, Endre/0000-0002-0000-3805; Kun, Péter/0000-0002-9304-068X; Tereshchenko, Oleg Evgenevich/0000-0002-6157-5874; Watanabe, Kenji/0000-0003-3701-8119} } @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:30629282, title = {Large intravalley scattering due to pseudo-magnetic fields in crumpled graphene}, url = {https://m2.mtmt.hu/api/publication/30629282}, author = {Kun, Péter and Kukucska, Gergő and Dobrik, Gergely and Koltai, János and Kürti, Jenő and Biró, László Péter and Tapasztó, Levente and Nemes Incze, Péter}, doi = {10.1038/s41699-019-0094-6}, journal-iso = {NPJ 2D MATER APPL}, journal = {NPJ 2D MATERIALS AND APPLICATIONS}, volume = {3}, unique-id = {30629282}, abstract = {The pseudo-magnetic field generated by mechanical strain in graphene can have dramatic consequences on the behavior of electrons and holes. Here we show that pseudo-magnetic field fluctuations present in crumpled graphene can induce significant intravalley scattering of charge carriers. We detect this by measuring the confocal Raman spectra of crumpled areas, where we observe an increase of the D′/D peak intensity ratio by up to a factor of 300. We reproduce our observations by numerical calculation of the double resonant Raman spectra and interpret the results as experimental evidence of the phase shift suffered by Dirac charge carriers in the presence of a pseudo-magnetic field. This lifts the restriction on complete intravalley backscattering of Dirac fermions.}, year = {2019}, eissn = {2397-7132}, orcid-numbers = {Kukucska, Gergő/0000-0002-8715-8075; Dobrik, Gergely/0000-0002-6690-274X; Koltai, János/0000-0003-2576-9740; Kürti, Jenő/0000-0001-9752-2769; Biró, László Péter/0000-0001-7261-0420; Tapasztó, Levente/0000-0002-9377-8465; Nemes Incze, Péter/0000-0002-1222-3020} } @article{MTMT:3390771, title = {Exfoliation of single layer BiTeI flakes}, url = {https://m2.mtmt.hu/api/publication/3390771}, author = {Fülöp, Bálint and Tajkov, Zoltán and Pető, János and Kun, Péter and Koltai, János and Oroszlány, László and Tóvári, Endre and Murakawa, H and Tokura, Y and Bordács, Sándor and Tapasztó, Levente and Csonka, Szabolcs}, doi = {10.1088/2053-1583/aac652}, journal-iso = {2D MATER}, journal = {2D MATERIALS}, volume = {5}, unique-id = {3390771}, issn = {2053-1583}, abstract = {Spin orbit interaction is strongly enhanced in structures where a heavy element is embedded in an inversion asymmetric crystal field. A simple way for realizing such a setup is to take a single atomic layer of a heavy element and encapsulate it between two atomic layers of different elemental composition. BiTeI is a promising candidate for such a 2D crystal. In its bulk form BiTeI consists of loosely coupled three atom thick layers where a layer of high atomic number Bi are sandwiched between Te and I sheets. Despite considerable recent attention to bulk BiTeI due to its giant Rashba spin splitting, the isolation of a single layer remained elusive. In this work we report the first successful isolation and characterization of a single layer of BiTeI using a novel exfoliation technique on stripped gold. Our scanning probe studies and first principles calculations show that the fabricated 100 mu m sized BiTeI flakes are stable at ambient conditions. Giant Rashba splitting and spin-momentum locking of this new 2D crystal opens the way towards novel spintronic applications and synthetic topological heterostructures.}, keywords = {AU; ENERGY; CRYSTALS; Graphene; Graphite; Rashba spin splitting; topological insulator; BiTeI; RASHBA; AU(111) SURFACE; DER-WAALS HETEROSTRUCTURES; SCANNING-TUNNELING-MICROSCOPE; stripped gold exfoliation; van der Waals heterostructures}, year = {2018}, eissn = {2053-1583}, orcid-numbers = {Fülöp, Bálint/0000-0001-6853-2642; Koltai, János/0000-0003-2576-9740; Oroszlány, László/0000-0001-5682-6424; Tóvári, Endre/0000-0002-0000-3805; Bordács, Sándor/0000-0003-0420-5997; Tapasztó, Levente/0000-0002-9377-8465} } @article{MTMT:3384999, title = {Dynamic strain in gold nanoparticle supported graphene induced by focused laser irradiation}, url = {https://m2.mtmt.hu/api/publication/3384999}, author = {Pálinkás, András and Kun, Péter and Koós, Antal Adolf and Osváth, Zoltán}, doi = {10.1039/C8NR02848F}, journal-iso = {NANOSCALE}, journal = {NANOSCALE}, volume = {10}, unique-id = {3384999}, issn = {2040-3364}, abstract = {Graphene on noble-metal nanostructures constitutes an attractive nanocomposite with possible applications in sensors or energy conversion. In this work we study the properties of hybrid graphene/gold nanoparticle structures by Raman spectroscopy and Scanning Probe Methods. The nanoparticles (NPs) were prepared by local annealing of gold thin films using focused laser beam. The method resulted in a patterned surface, with NPs formed at arbitrarily chosen microscale areas. Graphene grown by chemical vapour deposition was transferred onto the prepared, closely spaced gold NPs. While we found that successive higher intensity (6 mW) laser irradiation increased gradually the doping and the defect concentration in SiO2 supported graphene, the same irradiation procedure did not induce such irreversible effects in the graphene supported by gold NPs. Moreover, the laser irradiation induced dynamic hydrostatic strain in the graphene on Au NPs, which turned out to be completely reversible. These results can have implications in the development of graphene/plasmonic nanoparticle based high temperature sensors operating in dynamic regimes.}, year = {2018}, eissn = {2040-3372}, pages = {13417-13425}, orcid-numbers = {Koós, Antal Adolf/0000-0003-0563-948X; Osváth, Zoltán/0000-0003-0440-5446} } @article{MTMT:3264622, title = {Highly wear-resistant and low-friction Si3N4 composites by addition of graphene nanoplatelets approaching the 2D limit}, url = {https://m2.mtmt.hu/api/publication/3264622}, author = {Tapasztó, Orsolya and Balko, J and Puchy, V and Kun, Péter and Dobrik, Gergely and Fogarassy, Zsolt and Horváth, Zsolt Endre and Dusza, János and Balázsi, Katalin and Balázsi, Csaba and Tapasztó, Levente}, doi = {10.1038/s41598-017-10290-5}, journal-iso = {SCI REP}, journal = {SCIENTIFIC REPORTS}, volume = {7}, unique-id = {3264622}, issn = {2045-2322}, year = {2017}, eissn = {2045-2322}, orcid-numbers = {Tapasztó, Orsolya/0000-0001-6117-4635; Dobrik, Gergely/0000-0002-6690-274X; Fogarassy, Zsolt/0000-0003-4981-1237; Horváth, Zsolt Endre/0000-0002-4632-0136; Balázsi, Katalin/0000-0002-8929-9672; Balázsi, Csaba/0000-0003-4219-8783; Tapasztó, Levente/0000-0002-9377-8465} } @article{MTMT:2047559, title = {Preparation and characterization of multilayer graphene by mechanical milling and related applications for ceramic composites}, url = {https://m2.mtmt.hu/api/publication/2047559}, author = {Kun, Péter and Tapasztó, Orsolya and Czigány, Zsolt and Balázsi, Csaba}, doi = {10.4028/www.scientific.net/MSF.729.252}, journal-iso = {MATER SCI FORUM}, journal = {MATERIALS SCIENCE FORUM}, volume = {729}, unique-id = {2047559}, issn = {0255-5476}, year = {2013}, eissn = {1662-9752}, pages = {252-259}, orcid-numbers = {Tapasztó, Orsolya/0000-0001-6117-4635; Czigány, Zsolt/0000-0001-6410-8801; Balázsi, Csaba/0000-0003-4219-8783} } @article{MTMT:2047546, title = {Structural and mechanical properties of milled Si3N4/cnts composites by spark plasma sintering method}, url = {https://m2.mtmt.hu/api/publication/2047546}, author = {Balázsi, Csaba and Tapasztó, Orsolya and Károly, Zoltán and Kun, Péter and Balázsi, Katalin and Szépvölgyi, János}, doi = {10.4028/www.scientific.net/MSF.729.31}, journal-iso = {MATER SCI FORUM}, journal = {MATERIALS SCIENCE FORUM}, volume = {729}, unique-id = {2047546}, issn = {0255-5476}, year = {2013}, eissn = {1662-9752}, pages = {31-36}, orcid-numbers = {Balázsi, Csaba/0000-0003-4219-8783; Tapasztó, Orsolya/0000-0001-6117-4635; Balázsi, Katalin/0000-0002-8929-9672; Szépvölgyi, János/0000-0003-3727-4745} }