Zobrazeno 1 - 10
of 1 269
pro vyhledávání: '"P. Kužel"'
Autor:
Bagarello, Fabio, Kuzel, Sergiusz
Let $\mathcal{H}$ be a linear space equipped with an indefinite inner product $[\cdot, \cdot]$. Denote by $\mathcal{F}_{++}=\{f\in\mathcal{H} \ : \ [f,f]>0\}$ the nonlinear set of positive vectors in $\mathcal{H}$. We demonstrate that the properties
Externí odkaz:
http://arxiv.org/abs/2411.04247
Publikováno v:
Nanophotonics, 13, 1859 (2024)
Time-resolved terahertz spectroscopy is used to investigate formation and ultrafast long-distance propagation of electron-hole plasma in strongly photoexcited GaAs and InP. The observed phenomena involve fundamental interactions of electron-hole syst
Externí odkaz:
http://arxiv.org/abs/2409.20121
Optical pump-terahertz probe spectroscopy has been used to investigate ultrafast photo-induced charge carrier transport in 3.4 $\mu$m wide graphene ribbons upon scaling the optical pump intensity. For low pump fluences, the deposited pump energy is r
Externí odkaz:
http://arxiv.org/abs/2406.19688
Autor:
Bastien, G., Repček, D., Eliáš, A., Kancko, A., Courtade, Q., Haidamak, T., Savinov, M., Bovtun, V., Kempa, M., Carva, K., Vališka, M., Doležal, P., Kratochvílová, M., Barnett, S. A., Proschek, P., Prokleška, J., Kadlec, C., Kužel, P., Colman, R. H., Kamba, S.
Publikováno v:
Adv. Mater. 2024, 2410282
The study of magnetic frustration in classical spin systems was motivated by the prediction and discovery of classical spin liquid states. These uncommon magnetic phases are characterized by a massive degeneracy of their ground state implying a finit
Externí odkaz:
http://arxiv.org/abs/2405.19859
Publikováno v:
Phys. Rev. Res. 6, 033063 (2024)
Dynamics of plasmons in nanoribbons of (hydrogen intercalated) quasi-free-standing single layer graphene is studied by terahertz spectroscopy both in the steady state and upon photoexcitation by an ultrashort near infrared laser pulse. The use of two
Externí odkaz:
http://arxiv.org/abs/2405.13585
Self-assembly of organic molecules represents a fascinating playground to create various liquid crystalline (LC) nanostructures. In this work, we study layer undulations on micrometer scale in smectic A phases for achiral compounds, experimentally de
Externí odkaz:
http://arxiv.org/abs/2311.05365
Autor:
Bagarello, Fabio, Kużel, Sergiusz
In \cite{BK} Parseval frames were used to define bounded Hamiltonians, both in finite and in infinite dimesional Hilbert spaces. Here we continue this analysis, with a particular focus on the discrete spectrum of Hamiltonian operators defined as a we
Externí odkaz:
http://arxiv.org/abs/2304.02627
Autor:
Kubaščík, Peter, Farkaš, Andrej, Olejník, Kamil, Troha, Tinkara, Hývl, Matěj, Krizek, Filip, Joshi, Deep C., Ostatnický, Tomáš, Jechumtál, Jiří, Schmoranzerová, Eva, Campion, Richard P., Zázvorka, Jakub, Novák, Vít, Kužel, Petr, Jungwirth, Tomáš, Němec, Petr, Nádvorník, Lukáš
Antiferromagnetic CuMnAs thin films have attracted attention since the discovery of the manipulation of their magnetic structure via electrical, optical, and terahertz pulses of electric fields, enabling convenient approaches to the switching between
Externí odkaz:
http://arxiv.org/abs/2303.15268
Autor:
Shestopalov, Mykhailo, Dědič, Václav, Rejhon, Martin, Morzhuk, Bohdan, Paingad, Vaisakh C., Mohelský, Ivan, Mardelé, Florian Le, Kužel, Petr, Orlita, Milan, Kunc, Jan
We investigate the origin of the translational symmetry breaking in epitaxially grown single-layer graphene. Despite the surface morphology of homogeneous graphene films influenced by the presence of mutually parallel SiC surface terraces, the far-in
Externí odkaz:
http://arxiv.org/abs/2302.09007
Autor:
Cigl, Martin, Podoliak, Natalia, Landovský, Tomáš, Repček, Dalibor, Kužel, Petr, Novotná, Vladimíra
Since the recent discoveries, ferroelectric nematics became of upmost interest due to their outstanding ferroelectric properties. In this work, we prepared a series of polar molecules revealing a ferroelectric nematic phase (NF) with a very high diel
Externí odkaz:
http://arxiv.org/abs/2301.04865