Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Savio Fabretti"'
Autor:
Savio Fabretti, Inga-Mareen Imort, Timo Kuschel, Thomas Dahm, Veerendra K. Guduru, Uli Zeitler, Andy Thomas
Publikováno v:
AIP Advances, Vol 4, Iss 3, Pp 037115-037115-6 (2014)
We investigated the magnetic anisotropy ratio of thin sputtered polycrystalline MgB2 films on MgO substrates. Using high magnetic field measurements, we estimated an anisotropy ratio of 1.35 for T = 0 K with an upper critical field of 31.74 T in the
Externí odkaz:
https://doaj.org/article/109e3c45f3c948e8b1df92df2607bc46
Autor:
Nicolas S. Beermann, Savio Fabretti, Karsten Rott, Hassan A. Hafez, Günter Reiss, Dmitry Turchinovich
Many modern spintronic technologies, such as spin valves, spin Hall applications, and spintronic THz emitters, are based on electrons crossing buried internal interfaces within metallic nanostructures. However, the complex current pathways within suc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f721702733ee932610c6da46c3fe0e09
http://arxiv.org/abs/2211.01898
http://arxiv.org/abs/2211.01898
Publikováno v:
2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d355bb0dc883a9934dd0046a7e75d4e4
https://doi.org/10.1109/irmmw-thz50927.2022.9896041
https://doi.org/10.1109/irmmw-thz50927.2022.9896041
Autor:
Nicolas S. Beermann, Savio Fabretti, Karsten Rott, Hassan A. Hafez, Gunter Reiss, Dmitry Turchinovich
Publikováno v:
2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1800774edf8708ae25d8c3e145ba6635
https://doi.org/10.1109/irmmw-thz50927.2022.9896034
https://doi.org/10.1109/irmmw-thz50927.2022.9896034
Publikováno v:
Optics Express. 31:19076
Many components for terahertz (THz) optical filtering are mechanically fragile and are hard to produce with large aperture, making them unsuitable for applications where larger THz beam diameter is required. In this work, the THz optical properties o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45979572b86e2d787ae9b6581b3aeb89
https://doi.org/10.1364/oe.490078
https://doi.org/10.1364/oe.490078
Autor:
Laurenz Kremeyer, Günter Reiss, Alexander Stroh, Wentao Zhang, Michael Horn-von Hoegen, Jungwoo Koo, Dmitry Turchinovich, Frank Meyer zu Heringdorf, Hassan A. Hafez, Savio Fabretti
We demonstrate the broadband THz antireflection coating based on bismuth nanofilms. The antireflection effect stems from the complex-valued conductivity of bismuth, providing excellent impedance matching with high-index dielectrics such as silicon, i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4eee42d196ef5d06be925c522098db14
https://doi.org/10.1109/irmmw-thz46771.2020.9370860
https://doi.org/10.1109/irmmw-thz46771.2020.9370860
Spin Hall magnetoresistance in heterostructures consisting of noncrystalline paramagnetic YIG and Pt
Autor:
Tobias Kosub, Denys Makarov, Andy Thomas, Kevin Geishendorf, Helena Reichlova, Richard Schlitz, Savio Fabretti, Kornelius Nielsch, Sebastian T. B. Goennenwein, Rene Huebner, Michaela Lammel
Publikováno v:
Applied Physics Letters 114(2019), 252402
The spin Hall magnetoresistance (SMR) effect arises from spin-transfer processes across the interface between a spin Hall active metal and an insulating magnet. While the SMR response of ferrimagnetic and antiferromagnetic insulators has been studied
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97d716c4ce68334d8d941581bd6ecef8
Autor:
Denys Makarov, Kornelius Nielsch, Richard Schlitz, Sebastian T. B. Goennenwein, Savio Fabretti, Tobias Kosub, Andy Thomas
Publikováno v:
Applied Physics Letters 112(2018)13, 132401
We study the evolution of magnetoresistance with temperature in thin film bilayers consisting of platinum and the antiferromagnet Cr$_2$O$_3$ with its easy axis out of the plane. We vary the temperature from 20 - 60{\deg}C, close to the N\'eel temper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1fe5be81e5a4dea262881e7e3f7c156
http://arxiv.org/abs/1712.08563
http://arxiv.org/abs/1712.08563
Autor:
Patrick Peretzki, Michael Seibt, Robert Zierold, Carmen Voigt, Andy Thomas, Savio Fabretti, Carsten Ronning, Kornelius Nielsch
Magnetic tunnel junctions with HfO2 tunnel barriers were prepared through a combination of magnetron sputtering and atomic layer deposition. We investigated the tunneling transport behavior, including the tunnel magnetoresistance ratio and the curren
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21b2d7b5bf3662c8786836e89d37f669
https://pub.uni-bielefeld.de/record/2704229
https://pub.uni-bielefeld.de/record/2704229
We fabricated superconducting MgB2 thin films on (001) MgO substrates by magnetron rf and dc co-sputtering on heated substrates. We annealed the samples exsitu and in-situ at temperatures between 450 degrees C and 750 degrees C. The substrate tempera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dcfcc99b1b35b9846b83e3c215ac24a5
https://pub.uni-bielefeld.de/record/2625972
https://pub.uni-bielefeld.de/record/2625972