Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Evangelos Th. Papaioannou"'
Autor:
Dimitrios I. Anyfantis, Alexandros Barnasas, Nikolaos C. Diamantopoulos, Constantinos M. Tsakiris, Georg Schmidt, Evangelos Th. Papaioannou, Panagiotis Poulopoulos
Publikováno v:
Micro, Vol 4, Iss 1, Pp 157-169 (2024)
Perpendicular magnetic anisotropy at transition metal/oxide interfaces plays a significant role in technological applications such as magnetic storage and spintronics. In this study, we investigate the effects of thermal annealing and Pt ultrathin in
Externí odkaz:
https://doaj.org/article/b327f924996347348bc994f17991eaed
Autor:
Nikolaos Kanistras, Laura Scheuer, Dimitrios I. Anyfantis, Alexandros Barnasas, Garik Torosyan, René Beigang, Ovidiu Crisan, Panagiotis Poulopoulos, Evangelos Th. Papaioannou
Publikováno v:
Nanomaterials, Vol 14, Iss 2, p 215 (2024)
THz radiation emitted by ferromagnetic/non-magnetic bilayers is a new emergent field in ultra-fast spin physics phenomena with a lot of potential for technological applications in the terahertz (THz) region of the electromagnetic spectrum. The role o
Externí odkaz:
https://doaj.org/article/0edee6343fad4e9da47b1bb4a0a37a6a
Autor:
Valynn Katrine Mag-usara, Mary Clare Escaño, Christopher E. Petoukhoff, Garik Torosyan, Laura Scheuer, Julien Madéo, Jessica Afalla, Miezel L. Talara, Joselito E. Muldera, Hideaki Kitahara, David R. Bacon, Makoto Nakajima, Keshav Dani, Evangelos Th. Papaioannou, René Beigang, Masahiko Tani
Publikováno v:
iScience, Vol 25, Iss 7, Pp 104615- (2022)
Summary: Terahertz emission from ferromagnetic/non-magnetic spintronic heterostructures had been demonstrated as pump wavelength-independent. We report, however, the pump wavelength dependence of terahertz emission from an optimized Fe/Pt spintronic
Externí odkaz:
https://doaj.org/article/c6b5fcbd62114ef881a77bd48e55812f
Autor:
Laura Scheuer, Moritz Ruhwedel, Dimitrios Karfaridis, Isaak G. Vasileiadis, Dominik Sokoluk, Garik Torosyan, George Vourlias, George P. Dimitrakopoulos, Marco Rahm, Burkard Hillebrands, Thomas Kehagias, René Beigang, Evangelos Th. Papaioannou
Publikováno v:
iScience, Vol 25, Iss 5, Pp 104319- (2022)
Summary: Recent developments in nanomagnetism and spintronics have enabled the use of ultrafast spin physics for terahertz (THz) emission. Spintronic THz emitters, consisting of ferromagnetic (FM)/non-magnetic (NM) thin film heterostructures, have de
Externí odkaz:
https://doaj.org/article/be69c74bd3354e84a3f1abe4c1060722
Autor:
Dimitrios I. Anyfantis, Camillo Ballani, Nikos Kanistras, Alexandros Barnasas, Ioannis Tsiaoussis, Georg Schmidt, Evangelos Th. Papaioannou, Panagiotis Poulopoulos
Publikováno v:
Materials, Vol 16, Iss 4, p 1378 (2023)
Co/CoO multilayers are fabricated by means of radio-frequency magnetron sputtering. For the formation of each multilayer period, a Co layer is initially produced followed by natural oxidation. Platinum is used not only as buffer and capping layers, b
Externí odkaz:
https://doaj.org/article/9701675566204f74a6898d9d045c2d9e
Autor:
Thomas Kehagias, Dimitrios Karfaridis, Camillo Ballani, Laura Mihalceanu, Christoph Hauser, Isaak G. Vasileiadis, George P. Dimitrakopulos, George Vourlias, Evangelos Th. Papaioannou
Publikováno v:
Materials, Vol 14, Iss 16, p 4354 (2021)
We have explored the impact of elevated growth and annealing temperatures on the local interfacial structure of thin Fe(12 nm)/Pt(10 nm) spintronic bilayers, epitaxially grown on MgO (100), and their correlation to magnetization reversal and dynamics
Externí odkaz:
https://doaj.org/article/05263b132da045e8830928fee1b25141
Autor:
Richard M. Rowan-Robinson, Emil Melander, Ioan-Augustin Chioar, Blanca Caballero, Antonio García-Martín, Evangelos Th. Papaioannou, Vassilios Kapaklis
Publikováno v:
AIP Advances, Vol 9, Iss 2, Pp 025317-025317-5 (2019)
Large surface plasmon polariton assisted enhancement of the magneto-optical activity has been observed in the past, through spectral measurements of the polar Kerr rotation in Co hexagonal antidot arrays. Here, we report a strong thickness dependence
Externí odkaz:
https://doaj.org/article/35b9cb2a5cee4358b3e3bed837fff4da
Publikováno v:
Physical Review Applied. 19
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33719ce233a0333eb0ed5e05f3518463
https://doi.org/10.1103/physrevapplied.19.l041001
https://doi.org/10.1103/physrevapplied.19.l041001
Publikováno v:
Terahertz Emitters, Receivers, and Applications XIII.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d0fe0237bc08ec9152117c663dc0808
https://doi.org/10.1117/12.2633394
https://doi.org/10.1117/12.2633394
Publikováno v:
Nanophotonics, Vol 10, Iss 4, Pp 1243-1257 (2020)
The field of THz spintronics is a novel direction in the research field of nanomagnetism and spintronics that combines magnetism with optical physics and ultrafast photonics. The experimental scheme of the field involves the use of femtosecond laser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::542aa4c47c12620b7c972c5415663cb1
https://doaj.org/article/0a3700b162da4f398acc1943fca42eb4
https://doaj.org/article/0a3700b162da4f398acc1943fca42eb4