Výsledky vyhledávání - "Soltys, Jakub"

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An influence of parallel electric field on the dispersion relation of graphene - a new route to Dirac logics

Autor: Krukowski, Stanisław, Sołtys, Jakub, Borysiuk, Jolanta, Piechota, Jacek

Publikováno v: Journal of Crystal Growth - August 2014; 401:869-73

Ab initio density functional theory (DFT) simulations were used to investigate an influence of electric field, parallel to single and multilayer graphene on its electron dispersion relations close to K point. It was shown that for both single layer a

Externí odkaz: http://arxiv.org/abs/1209.4005

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Role of structure of C-terminated 4H-SiC(000) surface in growth of graphene layers - transmission electron microscopy and density functional theory studies

Autor: Borysiuk, Jolanta, Sołtys, Jakub, Bożek, Rafal, Piechota, Jacek, Krukowski, Stanislaw, Strupinski, Wlodzimierz, Baranowski, Jacek M., Stepniewski, Roman

Publikováno v: Physical Review B - 18 January 2012; 85: 045426-1-7

Principal structural defects in graphene layers, synthesized on a carbon-terminated face, i.e. the SiC(000) face of a 4H-SiC substrate, are investigated using microscopic methods. Results of high-resolution transmission electron microscopy (HRTEM) re

Externí odkaz: http://arxiv.org/abs/1109.6916

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Stacking Sequence Dependence of Graphene Layers on SiC(000-1) - Experimental and Theoretical Investigation

Autor: Borysiuk, Jolanta, Sołtys, Jakub, Piechota, Jacek

Publikováno v: J. Appl. Phys. 109, 093523 (2011)

Different stacking sequences of graphene are investigated using a combination of experimental and theoretical methods. The high-resolution transmission electron microscopy (HRTEM) of the stacking sequence of several layers of graphene, formed on the

Externí odkaz: http://arxiv.org/abs/1006.1040

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Density functional theory study of quasi-free-standing graphene layer on 4H-SiC(0001) surface decoupled by hydrogen atoms

Autor: Soltys, Jakub, Piechota, Jacek, Lopuszynski, Michal, Krukowski, Stanislaw

Epitaxial graphene, grown on SiC(0001) surface, has been widely studied both experimentally and theoretically. It was found that first epitaxial graphene layer in such structures is a buffer layer i.e. there are no characteristic Dirac cones in the b

Externí odkaz: http://arxiv.org/abs/1002.4717

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A comparative DFT study of electronic properties of 2H-, 4H- and 6H-SiC(0001) and SiC(000-1) clean surfaces: Significance of the surface Stark effect

Autor: Soltys, Jakub, Piechota, Jacek, Lopuszynski, Michal, Krukowski, Stanislaw

Electric field, uniform within the slab, emerging due to Fermi level pinning at its both sides is analyzed using DFT simulations of the SiC surface slabs of different thickness. It is shown that for thicker slab the field is nonuniform and this fact

Externí odkaz: http://arxiv.org/abs/0907.4320

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