Zobrazeno 1 - 10
of 362
pro vyhledávání: '"P. Strąk"'
Autor:
Ewa Przeździecka, P. Strąk, A. Wierzbicka, A. Adhikari, A. Lysak, P. Sybilski, J. M. Sajkowski, A. Seweryn, A. Kozanecki
Publikováno v:
Nanoscale Research Letters, Vol 16, Iss 1, Pp 1-9 (2021)
Abstract Trends in the behavior of band gaps in short-period superlattices (SLs) composed of CdO and MgO layers were analyzed experimentally and theoretically for several thicknesses of CdO sublayers. The optical properties of the SLs were investigat
Externí odkaz:
https://doaj.org/article/2e6478ae6a0c46219b664783f4106303
Autor:
Strak, Pawel, Kempisty, Pawel, Sakowski, Konrad, Piechota, Jacek, Grzegory, Izabella, Monroy, Eva, Kaminska, Agata, Krukowski, Stanislaw
Fundamental properties of spontaneous and piezo polarization are reformulated and critically reviewed. It was demonstrated that Landau definition of polarization as a dipole density could be used to the infinite systems. The difference between the bu
Externí odkaz:
http://arxiv.org/abs/2407.01134
Publikováno v:
Appl. Phys. Lett., 121, 242103 (2022)
Semiconductor superlattices have found widespread applications in electronic industries. In this work, short-period superlattice structure (SLs) composed of CdO and MgO layers was grown using the plasma-assisted molecular beam epitaxy (PA-MBE) techni
Externí odkaz:
http://arxiv.org/abs/2402.08354
Publikováno v:
Materials 29 May 2024; 17: 2614
Ab initio calculations were applied to large size slabs simulations for determination of the properties of the principal structures of the stoichiometric GaN(0001) surface. The results are different from published previously: stoichiometric GaN(0001)
Externí odkaz:
http://arxiv.org/abs/2401.06531
Autor:
Sakowski, Konrad, Strak, Pawel, Kempisty, Pawel, Piechota, Jacek, Grzegory, Izabella, Perlin, Piotr, Monroy, Eva, Kaminska, Agata, Krukowski, Stanislaw
Defect-mediated nonradiative recombination, known as Shockley-Read-Hall (SRH) recombination is reformulated. The introduced model considers Coulomb attraction between charged deep defect and the approaching free carrier, showing that this effect may
Externí odkaz:
http://arxiv.org/abs/2310.11823
Autor:
Krukowski, Stanislaw, Sakowski, Konrad, Strak, Paweł, Kempisty, Paweł, Piechota, Jacek, Grzegory, Izabella
Publikováno v:
Progress in Crystal Growth and Characterization of Materials - 6 September 2022; 68 :100581
Step pattern stability of the vicinal surfaces during growth was analyzed using various surface kinetic models. It was shown that standard analysis of the vicinal surfaces provides no indication on the possible step coalescence and therefore could no
Externí odkaz:
http://arxiv.org/abs/2203.11825
Autor:
Ahmad, Ashfaq, Strak, Pawel, Kempisty, Pawel, Sakowski, Konrad, Piechota, Jacek, Kangawa, Yoshihiro, Grzegory, Izabella, Leszczynski, Michal, Zytkiewicz, Zbigniew R., Muziol, Grzegorz, Monroy, Eva, Krukowski, Stanislaw, Kaminska, Agata
In this work, we study the emergence of polarization doping in AlxGa1-xN layers with graded composition from a theoretical viewpoint. We demonstrate that the charge conservation law applies for fixed and mobile charges separately, leading to nonlocal
Externí odkaz:
http://arxiv.org/abs/2106.01029
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New method for ab initio calculations of the properties of large size system based on phase-amplitude functional is presented. It is shown that Schrodinger equation for many electrons complex system including large size molecules, or clusters and als
Externí odkaz:
http://arxiv.org/abs/1910.04011
The paper reports on the solution in the semi-space corresponding to topological surface state. It was shown that the exponential surface state results from selection of the energy outside the allowed energy range. In the result, the kinetic energy o
Externí odkaz:
http://arxiv.org/abs/1902.07612