Zobrazeno 1 - 10
of 130
pro vyhledávání: '"Kempisty, Paweł"'
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
Autor:
Kawka, Karol, Kempisty, Pawel, Sakowski, Konrad, Krukowski, Stanislaw, Bockowski, Michal, Bowler, David, Kusaba, Akira
Publikováno v:
J. Appl. Phys. 135, 225302 (2024)
On semiconductor growth surfaces, surface reconstructions appear. Estimation of the reconstructed structures is essential for understanding and controlling growth phenomena. In this study, the stability of a mixture of two different surface reconstru
Externí odkaz:
http://arxiv.org/abs/2402.06140
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:
Sakowski, Konrad, Borowik, Łukasz, Rochat, Névine, Kempisty, Pawel, Strak, Pawel, Majewska, Natalia, Mahlik, Sebastian, Koroński, Kamil, Sochacki, Tomasz, Piechota, Jacek, Fouchier, Marc, Kaminska, Agata, Krukowski, Stanislaw
Publikováno v:
In Journal of Luminescence May 2024 269
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
Modeling of convective transport in crystallization of gallium nitride by basic ammonothermal method
Autor:
Zak, Marek, Kempisty, Pawel, Lucznik, Boleslaw, Grabianska, Karolina, Kucharski, Robert, Iwinska, Malgorzata, Bockowski, Michal
Publikováno v:
In Journal of Crystal Growth 1 February 2024 627
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
Autor:
Kempisty, Pawel, Ahmad, Ashfaq, Strak, Pawel, Sakowski, Konrad, Kafar, Anna, Piechota, Jacek, Krukowski, Stanislaw
Publikováno v:
In Computational Materials Science 25 October 2023 230
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