Zobrazeno 1 - 10
of 210
pro vyhledávání: '"Buczko, R."'
Autor:
Polley, C. M., Dziawa, P., Reszka, A., Szczerbakow, A., Minikayev, R., Domagala, J. Z., Safaei, S., Kacman, P., Buczko, R., Adell, J., Berntsen, M. H., Wojek, B. M., Tjernberg, O., Kowalski, B. J., Story, T., Balasubramanian, T.
Publikováno v:
Phys. Rev. B 89, 075317 (2014)
We present angle resolved photoemission spectroscopy measurements of the surface states on in-situ grown (111) oriented films of Pb$_{1-x}$Sn$_{x}$Se, a three dimensional topological crystalline insulator. We observe surface states with Dirac-like di
Externí odkaz:
http://arxiv.org/abs/1312.3226
Using a tight-binding approach we study theoretically the nature of surface states in Pb0.4Sn0.6Te - the newly discovered topological-crystalline-insulator. Apart from the studied before (001) surface states, two other surface families, {011} and {11
Externí odkaz:
http://arxiv.org/abs/1303.7119
Publikováno v:
J Phys Chem C 117, 20361(2013)
Using ab initio methods based on the density functional theory, we investigate the segregation and formation energies for various dopants (Si, Be, Zn, Sn), commonly used to obtain p- or ntype conductivity in GaAs and InAs nanowires. The distribution
Externí odkaz:
http://arxiv.org/abs/1302.0702
Autor:
Wojek, B. M., Buczko, R., Safaei, S., Dziawa, P., Kowalski, B. J., Berntsen, M. H., Balasubramanian, T., Leandersson, M., Szczerbakow, A., Kacman, P., Story, T., Tjernberg, O.
Publikováno v:
Phys. Rev. B 87, 115106 (2013)
We study the nature of (001) surface states in Pb_{0.73}Sn_{0.27}Se in the newly discovered topological-crystalline-insulator (TCI) phase as well as the corresponding topologically trivial state above the band-gap-inversion temperature. Our calculati
Externí odkaz:
http://arxiv.org/abs/1212.1783
Autor:
Dziawa, P., Kowalski, B. J., Dybko, K., Buczko, R., Szczerbakow, A., Szot, M., Łusakowska, E., Balasubramanian, T., Wojek, B. M., Berntsen, M. H., Tjernberg, O., Story, T.
Publikováno v:
Nature Materials 11, 1023-1027 (2012)
Topological insulators are a novel class of quantum materials in which time-reversal symmetry, relativistic (spin-orbit) effects and an inverted band structure result in electronic metallic states on the surfaces of bulk crystals. These helical state
Externí odkaz:
http://arxiv.org/abs/1206.1705
Autor:
Ungier, W., Buczko, R.
In CuCl bulk crystal negatively charged excitons (trions $X^-$) can be induced by the resonant optical excitation of extra electrons in conduction band minimum. In the case of light polarization and due to the top valence band structure of CuCl only
Externí odkaz:
http://arxiv.org/abs/cond-mat/0504368
Publikováno v:
Phys. Rev. B 66, 064521 (2002)
We consider a spin Hamiltonian describing $d$-$d$ exchange interactions between localized spins $d$ of a finite antiferromagnet as well as $p$-$d$ interactions between a conducting hole ($p$) and localized spins. The spin Hamiltonian is solved numeri
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105254
The possibility of formation of a new type of polaron based on the quantum aniferromagnet (AF) model is reported. We take into account exchange interactions between localized d-d spins of the AF, as well as the p-d interaction of the AF with p-carrie
Externí odkaz:
http://arxiv.org/abs/cond-mat/9907081
Publikováno v:
In Physica E: Low-dimensional Systems and Nanostructures 2010 42(4):795-798
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