J. Hlinka

Experimentally constrained modeling of the Pockels response of KNbO3 and KTaNbO3

Virginie de Mestral, Lorenzo Bastonero, Petr Bednyakov, Fedir Borodavka et autres

The soft-mode of electro-optic (EO) metal-oxide perovskites plays a critical role in determining their Pockels responses. This is the case of potassium tantalate niobate (KTN), which exhibits an intrinsic Pockels response 2.5 times larger than that of state-of-the-art barium titanate (BTO), highlighting …

ch, us, cz, be (code pays fourni par la source)

Experimentally constrained modeling of the Pockels response of KNbO3 and KTaNbO3

Virginie de Mestral, Lorenzo Bastonero, Petr Bednyakov, Fedir Borodavka et autres

The soft-mode of electro-optic (EO) metal-oxide perovskites plays a critical role in determining their Pockels response. This is the case of potassium tantalate niobate (KTN), which exhibits an intrinsic Pockels response 2.5 times larger than that of state-of-the-art barium titanate (BTO), highlighting …

ch, us, cz, be (code pays fourni par la source)

Pyramidal charged domain walls in ferroelectric BiFeO3 - data

Pavel Márton, Marek Paściak, Mauro A. P. Gonçalves, O. Novák et autres

BFO_1.arr was used to generate Fig. 4 (a,d) BFO_2.arr was used to generate Fig. 3 (a,b,c) BFO_3.arr was used to generate Fig. 2 (c,d), Fig. 3 (b,e), Fig. 5 BFO_4.arr was used to generate Fig. 4 (c,f) BTO_1.arr was used to generate …

Curvature-controlled polarization in adaptive ferroelectric membranes - data

G. Segantini, L. Tovaglieri, C. J. Roh, C.Y. Hsu et autres

viz readme.txt in Segantini_2025.zip with following description: "fig5_tetragonality.txt" This file contains 4 columns representing the x, y, and z coordinates, and the z/x tetragonality ratio. These data are used to generate the panels in Figure 5. "fig5_polarization.txt" This file contains 4 columns …

Terahertz-field activation of polar skyrons

Huaiyu Hugo Wang, Vladimir Alexandru Stoica, Cheng Dai, Marek Paściak et autres

Unraveling collective modes arising from coupled degrees of freedom is crucial for understanding complex interactions in solids and developing new functionalities. Unique collective behaviors emerge when two degrees of freedom, ordered on distinct length scales, interact. Polar skyrmions, three-dimensional electric polarization textures …

us, cz, in, cn, fr (code pays fourni par la source)

Curvature‐Controlled Polarization in Adaptive Ferroelectric Membranes

Greta Segantini, Ludovica Tovaglieri, Chang Jae Roh, Chih‐Ying Hsu et autres

Abstract This study explores the ferroelectric domain structure and mechanical properties of PbTiO 3 ‐based membranes, which develop a well‐ordered and crystallographic‐oriented ripple pattern upon release from their growth substrate. The ferrolectric domain structure of the PbTiO 3 layer is examined at …

ch, cz, sk (code pays fourni par la source)

Pyramidal charged domain walls in ferroelectric BiFeO3

Pavel Márton, Marek Paściak, Mauro A. P. Gonçalves, Ondřej Novák et autres

Abstract Domain structures play a crucial role in the electric, mechanical, and other properties of ferroelectric materials. In this study, we uncover the physical origins of the enigmatic zigzag domain structure in the prototypical multiferroic material BiFeO3. Using phase-field simulations within the …

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Establishing a pure antiferroelectric PbZrO3 phase through tensile epitaxial strain

Pauline Dufour, Emma Texier, Cécile Carrétéro, Xiaoyan Li et autres

Abstract The nature of lead zirconate, the historical antiferroelectric material, has recently been challenged. In PbZrO3 epitaxial films, thickness reduction engenders competition among antiferroelectric, ferrielectric and ferroelectric phases. All studies so far on PbZrO3 films have utilized commercially-available oxide single crystals with …

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Correction to “Robust SrTiO3 Passivation of Silicon Photocathode by Reduced Graphene Oxide for Solar Water Splitting”

H.P. Ho, Milutin Smiljanić, Zoran Jovanović, Miha Čekada et autres

Thermal stability and topological charge fragmentation in antiskyrmions of rhombohedral barium titanate

Florian Mayer, J. Hlinka

Antiskyrmions, as topological quasiparticles, hold significant promise for spintronics and nanoscale data storage applications. Using molecular dynamics simulations based on effective Hamiltonians, we investigated the thermal stability of antiskyrmion nanodomains in rhombohedral barium titanate. At 1 K, antiskyrmions with a topological charge …

at, cz (code pays fourni par la source)

Orbital angular momentum impact on light scattering by phonons tested experimentally

Anastasiia Pylypets, Fedir Borodavka, I. Rafalovskyi, I. Gregora et autres

Polarized Raman spectra of piezoelectric bismuth germanate single crystal were recorded using vortex light in order to verify the predicted symmetry selection rules for Raman scattering of photons with nonzero orbital angular momentum. First, the phonon spectrum is fully characterized by the …

cz (code pays fourni par la source)

Creation, annihilation and transport of nonmagnetic antiskyrmions within Ginzburg–Landau–Devonshire model

Vilgelmina Stepkova, J. Hlinka

Atomistic model calculations recently revealed that the polarization pattern at the cross section through nanoscale ferroelectric nanodomains in rhombohedral barium titanate shows a clear antiskyrmion attributes such as the net invariant topological charge of minus two. The present work confirms that these …

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