Levente Tapaszto — Head of Department, Associate Professor at the Institute of Technical Physics and Materials Science (MFA), Center for Energy Research, Hungarian Academy of Sciences. Dr. Levente Tapaszto is the winner of the Lendület program and winner of the “Junior Prize”. In 2015, he was awarded one of the four grants in Hungary from the European Research Council “Starting Grant” for research in the amount of 1.5 million euros.
Dr. Tapaszto was born in Arad in 1979 and graduated from the University in 2002. After that, he defended his PhD for the study of carbon nanotubes in Hungary, receiving an ELTE scholarship in 2008. Successfully worked as a researcher in the laboratory of the famous Hungarian scientist Prof. László P. Biró. At the same time, he was invited by the President of the Hungarian Academy of Sciences to the Young Researchers’ Council in the field of materials science as a permanent member of the Department of Physical Sciences.
Dr. Tapaszto works in the field of two-dimensional materials research. His group specializes in changing the properties of nanostructures at the atomic level. Dr. Tapaszto is the author of numerous publications in the field of nanotechnology, published in such journals as Nature, Nature Nanotechnology, Nature Chemistry, Nature Physics, etc.
Theme of the lecture Of Prof. Levente Tapasztó: “Nanoengineering of 2D materials”
Abstract: 2D materials shifted into the focus of materials research due to their unique properties emerging from the reduced dimensionality. The nanometer scale modification of their atomic structure opens up further possibilities for engineering their electronic, magnetic or catalytic properties. In this talk, we will present several approaches developed in our laboratory for nanoengineering the structure and properties of graphene and transition metal chalcogenide single-layers.
Péter Vancsó graduated in Physics at Eötvös Loránd University, Budapest in 2010. Between
Theme of the lecture of Dr. Péter Vancsó: “Edge magnetism in graphene and MoS2 nanoribbons”
Abstract: Edges of two-dimensional (2D) crystals have recently attracted great interest due to their rich physics and the promise of applications from sensing to spintronics. In this talk we provide examples of the edge magnetism in graphene and molybdenum disulfide (MoS2), a 2D semi-metal and semiconductor. The electronic and magnetic properties of the edges were calculated by using tight-binding (TB), density functional theory (DFT) and the Hubbard model, while the measurements were performed by scanning tunneling microscopy (STM) and spectroscopy. We show that both zigzag edges of graphene and MoS2 can host magnetic moments, however the stability of the edge magnetism is quite different. Based on our results in zigzag graphene nanoribbons, we proposed a novel magnetically mediated switching mechanism for field-effect transistor (FET) applications.
- G. Zs. Magda, X. Jin, I. Hagymási, P Vancsó. et al., Room temperature magnetic order on zigzag edges of narrow graphene nanoribbons. Nature 514,
608-611 (2014) - P. Vancsó, I. Hagymási, P. Castenetto et al., Stability of edge magnetism against disorder in zigzag MoS2 nanoribbons. arXiv:1906.00568 (2019)
- P. Vancsó, I. Hagymási, L. Tapasztó, A magnetic phase-transition graphene transistor with tunable spin polarization. 2D Materials 4, 024008 (2017)