Zobrazeno 1 - 10
of 312
pro vyhledávání: '"Hellwig Olav"'
Autor:
Samad Fabian, Hellwig Olav
Publikováno v:
Emergent Scientist, Vol 7, p 1 (2023)
For a magnetic material, the easy and hard magnetic axes describe the directions of favourable respectively unfavourable alignment of the magnetisation. In this article, we describe how to determine these axes for cubic magnetic crystals. Usually it
Externí odkaz:
https://doaj.org/article/c3f8f94e0e1a48318081d1400e793fb1
Autor:
Sailler, Sebastian, Skobjin, Gregor, Schlörb, Heike, Boehm, Benny, Hellwig, Olav, Thomas, Andy, Goennenwein, Sebastian T. B., Lammel, Michaela
Publikováno v:
Phys. Rev. Mater. 8, 043402 (2024)
Yttrium iron garnet (YIG) is a prototypical material in spintronics due to its exceptional magnetic properties. To exploit these properties high quality thin films need to be manufactured. Deposition techniques like sputter deposition or pulsed laser
Externí odkaz:
http://arxiv.org/abs/2308.00412
Autor:
Salikhov, Ruslan, Samad, Fabian, Schneider, Sebastian, Pohl, Darius, Rellinghaus, Bernd, Böhm, Benny, Ehrler, Rico, Lindner, Jürgen, Kiselev, Nikolai S., Hellwig, Olav
Magnetic nano-objects possess great potential for more efficient data processing, storage and neuromorphic type of applications. Using high perpendicular magnetic anisotropy synthetic antiferromagnets in the form of multilayer-based metamaterials we
Externí odkaz:
http://arxiv.org/abs/2304.14775
Autor:
Hache, Toni, Koerber, Lukas, Hula, Tobias, Lenz, Kilian, Kakay, Attila, Hellwig, Olav, Lindner, Juergen, Fassbender, Juergen, Schultheiss, Helmut
We use a pure spin current originating from the spin Hall effect to generate a spin-orbit torque (SOT) strongly reducing the effective damping in an adjacent ferromagnet. Due to additional microwave excitation, large spin-wave amplitudes are achieved
Externí odkaz:
http://arxiv.org/abs/2304.02708
The magnetization dynamics in nanostructures has been extensively studied in the last decades, and nanomagnetism has evolved significantly over that time, discovering new effects, developing numerous applications, and identifying promising new direct
Externí odkaz:
http://arxiv.org/abs/2209.14824
Publikováno v:
Phys. Rev. B 106, 214413 (2022)
We present a frequency-domain study of the dynamic behavior of a magnetic vortex core within a single Permalloy disk by means of electrical detection and micromagnetic simulations. When exciting the vortex core dynamics in a non-linear regime, the li
Externí odkaz:
http://arxiv.org/abs/2209.03701
Autor:
Salikhov, Ruslan, Samad, Fabian, Arekapudi, Sri Sai Phani Kanth, Lindner, Jürgen, Kiselev, Nikolai S., Hellwig, Olav
The reversal of magnetic bubble helicity through topologically trivial transient states provides an additional degree of freedom that promises the development of multidimensional magnetic memories. A key requirement for this concept is the stabilizat
Externí odkaz:
http://arxiv.org/abs/2202.09564
Autor:
Guyader, Loïc Le, Higley, Daniel J., Pancaldi, Matteo, Liu, Tianmin, Chen, Zhao, Chase, Tyler, Granitzka, Patrick W., Coslovich, Giacomo, Lutman, Alberto A., Dakovski, Georgi L., Schlotter, William F., Shafer, Padraic, Arenholz, Elke, Hellwig, Olav, Lalieu, Mark L. M., Koopmans, Bert, Reid, Alexander H., Bonetti, Stefano, Stöhr, Joachim, Dürr, Hermann A.
We use transient absorption spectroscopy with circularly polarized x-rays to detect laser-excited hole states below the Fermi level and compare their dynamics with that of unoccupied states above the Fermi level in ferromagnetic [Co/Pd] multilayers.
Externí odkaz:
http://arxiv.org/abs/2110.15615
Autor:
Niemann, Leonhard, Fuchs, Florian, Gruschwitz, Markus, Sellge, Gabriel, Rothe, Tom, Hermann, Sascha, Köhne, Martin, Schuster, Jörg, Hellwig, Olav, Tegenkamp, Christoph
Publikováno v:
In Diamond & Related Materials August 2024 147
Autor:
Li, Zichao, Yuan, Ye, Hübner, René, Begeza, Viktor, Naumann, Thomas, Rebohle, Lars, Hellwig, Olav, Helm, Manfred, Nielsch, Kornelius, Prucnal, Slawomir, Zhou, Shengqiang
Magnetic skyrmions have been suggested as information carriers for future spintronic devices. As the first material with experimentally confirmed skyrmions, B20-type MnSi was the research focus for decades. Although B20-MnSi films have been successfu
Externí odkaz:
http://arxiv.org/abs/2109.11836