Zobrazeno 1 - 10
of 1 387
pro vyhledávání: '"Kapaklis"'
Autor:
Vantaraki, Christina, Grassi, Matías P., Ignatova, Kristina, Foerster, Michael, Arnalds, Unnar B., Primetzhofer, Daniel, Kapaklis, Vassilios
We investigate the design of magnetic ordering in one-dimensional mesoscopic magnetic Ising chains by modulating long-range interactions. These interactions are affected by geometrical modifications to the chain, which adjust the energy hierarchy and
Externí odkaz:
http://arxiv.org/abs/2410.21903
Autor:
Vantaraki, Christina, Ström, Petter, Tran, Tuan T., Grassi, Matías P., Fevola, Giovanni, Foerster, Michael, Sadowski, Jerzy T., Primetzhofer, Daniel, Kapaklis, Vassilios
Publikováno v:
Appl. Phys. Lett. 125, 202403 (2024)
We present a method for the additive fabrication of planar magnetic nanoarrays with minimal surface roughness. Synthesis is accomplished by combining electron-beam lithography, used to generate nanometric patterned masks, with ion implantation in thi
Externí odkaz:
http://arxiv.org/abs/2409.10433
Autor:
Parchenko, Sergii, Riepp, Matthias, Marotzke, Simon, Larsson, Agne Åberg, Kapaklis, Vassilios, Oppeneer, Peter M., Scherz, Andreas
We explore the impact of optical excitation using two interfering ultrashort optical pulses on ultrafast magnetization dynamics. Our investigation focuses on Pt/Co/Pt multilayers and TbCo alloy samples, employing a dual pump approach. We observe sign
Externí odkaz:
http://arxiv.org/abs/2404.15110
We demonstrate the feasibility of obtaining accurate pair distribution functions of thin amorphous films down to 80 nm, using modern laboratory-based x-ray sources. The pair distribution functions are obtained using a single diffraction scan (one-sho
Externí odkaz:
http://arxiv.org/abs/2403.12163
Publikováno v:
Journal of Physics: Condensed Matter 36, 405804 (2024)
We investigate the magnetization dynamics in nanomagnet vertices often found in artificial spin ices. Our analysis involves creating a simplified model that depicts edge magnetization using magnetic charges. We utilize the model to explore the energy
Externí odkaz:
http://arxiv.org/abs/2402.03036
Autor:
Mottamchetty, Venkatesh, Brucas, Rimantas, Ravensburg, Anna L., Maciel, Renan, Thonig, Danny, Henk, Jurgen, Gupta, Rahul, Roos, Arne, Tai, Cheuk Wai, Kapaklis, Vassilios, Svedlindh, Peter
We report efficient terahertz (THz) generation in epitaxial $\alpha$-W/Co$_{60}$Fe$_{40}$ spintronic emitters. Two types of emitters have been investigated; epitaxial $\alpha$-W$(110)$/Co$_{60}$Fe$_{40}(110)$ and $\alpha$-W$(001)$/Co$_{60}$Fe$_{40}(0
Externí odkaz:
http://arxiv.org/abs/2401.10123
The effect of iron layer thickness on the interlayer exchange coupling in Fe/MgO (001) superlattices
Publikováno v:
Phys. Rev. B 109, 224404 (2024)
We describe the effect of the Fe layer thickness on the antiferromagnetic interlayer exchange coupling in [Fe/MgO]$_N$ superlattices. An increase in coupling strength with increasing Fe layer thickness is observed, which highlights the need of includ
Externí odkaz:
http://arxiv.org/abs/2401.08336
Autor:
Ravensburg, Anna L., Werwiński, Mirosław, Rychły-Gruszecka, Justyna, Snarski-Adamski, Justyn, Elsukova, Anna, Persson, Per O. Å., Rusz, Ján, Brucas, Rimantas, Hjövarsson, Björgvin, Svedlindh, Peter, Pálsson, Gunnar K., Kapaklis, Vassilios
Publikováno v:
Phys. Rev. Materials 8, L081401 (2024)
We report the discovery of a boundary-induced body-centered tetragonal (bct) iron phase in thin films deposited on MgAl$_{2}$O$_{4}$ ($001$) substrates. We present evidence for this phase using detailed x-ray analysis and ab-initio density functional
Externí odkaz:
http://arxiv.org/abs/2401.05990
Autor:
Parchenko, Sergii, Larsson, Agne Åberg, Kapaklis, Vassilios, Sharma, Sangeeta, Scherz, Andreas
The parallel or antiparallel arrangement of electron spins plays a pivotal role in determining the properties of a physical system. To meet the demands for innovative technological solutions, extensive efforts have been dedicated to exploring effecti
Externí odkaz:
http://arxiv.org/abs/2311.05507
GenL is a flexible program that can be used to simulate and/or fit x-ray diffraction data from epitaxial thin films exhibiting Laue oscillations. It utilizes differential evolution within a genetic algorithm for the fitting of data and is based on th
Externí odkaz:
http://arxiv.org/abs/2310.13539