Zobrazeno 1 - 10
of 157
pro vyhledávání: '"P. Scharoch"'
Publikováno v:
Materials Research Letters, Vol 8, Iss 2, Pp 75-81 (2020)
We present experimental and theoretical studies of the electronic band structure of 2H-MoTe2 at high hydrostatic pressures. Photoreflectance measurements allowed the determination of the pressure coefficient of the direct transitions A and B, which a
Externí odkaz:
https://doaj.org/article/e8318309e7384e68afc13b99e94e8e16
Nanotechnology's impact on semiconductor industry advancement, particularly through the engineering of nanostructures like nanowires, opens new possibilities for material functionality due to the tunable physical properties of nanostructures compared
Externí odkaz:
http://arxiv.org/abs/2404.05718
In this paper, we study theoretically the electron and spectral properties of Ge1-xSnx systems, including alloys, cubic- and spherical quantum dots. The single-particle electron and hole states are calculated within the sp3d5s* tight-binding approach
Externí odkaz:
http://arxiv.org/abs/2311.18682
Autor:
Rybak, Miłosz, Junior, Paulo E. Faria, Woźniak, Tomasz, Scharoch, Paweł, Fabian, Jaroslav, Birowska, Magdalena
Here we systematically investigate the impact of the spin direction on the electronic and optical properties of transition metal phosphorus trichalcogenides (MPX$_3$, M=Mn, Ni, Fe; X=S, Se) exhibiting various antiferromagnetic arrangement within the
Externí odkaz:
http://arxiv.org/abs/2308.13109
Autor:
Linhart, W. M., Rybak, M., Birowska, M., Mosina, K., Mazanek, V., Scharoch, P., Kaczorowski, D., Sofer, Z., Kudrawiec, R.
Here, we investigate the role of the interlayer magnetic ordering of CrSBr in the framework of $\textit{ab initio}$ calculations and by using optical spectroscopy techniques. These combined studies allow us to unambiguously determine the nature of th
Externí odkaz:
http://arxiv.org/abs/2303.17926
Publikováno v:
Advances in Materials Science and Engineering, Vol 2016 (2016)
Structural and elastic properties of AlNxP1-x, a novel semiconductor alloy, are studied from the first principles in both zinc-blende and wurtzite structures. Performances of the finite difference (FD) method and the density functional perturbation t
Externí odkaz:
https://doaj.org/article/0de5863127d7496a8a3cc661daa2ea6f
Autor:
Rybak, Miłosz, Woźniak, Tomasz, Birowska, Magdalena, Dybała, Filip, Segura, Alfredo, Kapcia, Konrad J., Scharoch, Paweł, Kudrawiec, Robert
Publikováno v:
Nanomaterials 12 (19), 3433 (2022)
Optical measurements under externally applied stresses allow us to study the materials' electronic structure by comparing the pressure evolution of optical peaks obtained from experiments and theoretical calculations. We examine the stress-induced ch
Externí odkaz:
http://arxiv.org/abs/2210.12074
Publikováno v:
J. Phys. D: Appl. Phys. 54 085102 (2021)
The band gap engineering of group IV semiconductors has not been well explored theoretically and experimentally, except for SiGe. Recently, GeSn has attracted much attention due to the possibility of obtaining a direct band gap in this alloy, thereby
Externí odkaz:
http://arxiv.org/abs/2203.10361
Autor:
Oliva, Robert, Woźniak, Tomasz, Junior, Paulo E. Faria, Dybała, Filip, Kopaczek, Jan, Fabian, Jaroslav, Scharoch, Paweł, Kudrawiec, Robert
The optical properties of two-dimensional materials can be effectively tuned by strain induced from a deformable substrate. In the present work we combine first-principles calculations based on density functional theory and the effective Bethe-Salpet
Externí odkaz:
http://arxiv.org/abs/2202.08551
Autor:
Gawarecki, Krzysztof, Scharoch, Paweł, Wiśniewski, Michał, Ziembicki, Jakub, Mączko, Herbert S., Gładysiewicz, Marta, Kudrawiec, Robert
In this work we derive a ready-to-use symmetry invariant expansion of the full-zone 30-band k.p Hamiltonian for the Td point group. In order to find respective parameters, the band structures of III-V materials were calculated within a state-of-the-a
Externí odkaz:
http://arxiv.org/abs/2201.03234