Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Nikolai S. Kiselev"'
Autor:
Thibaud Denneulin, András Kovács, Raluca Boltje, Nikolai S. Kiselev, Rafal E. Dunin-Borkowski
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-10 (2024)
Abstract Magnetic skyrmions are quasi-particles with a swirling spin texture that form two-dimensional lattices. Skyrmion lattices can exhibit defects in response to geometric constraints, variations of temperature or applied magnetic fields. Measuri
Externí odkaz:
https://doaj.org/article/d383572fbb9b45d693c09f776521c45d
Publikováno v:
Frontiers in Physics, Vol 11 (2023)
In magnetic multilayers with perpendicular anisotropy, the competition of short-range and long-range interactions gives rise to the stability of cylindrical magnetic domains, also known as magnetic bubbles. The presence of Dzyaloshinsky-Moriya intera
Externí odkaz:
https://doaj.org/article/df3b08c2412d43d4b0b12b15bd4f8497
Autor:
Vladyslav M. Kuchkin, Nikolai S. Kiselev, Filipp N. Rybakov, Igor S. Lobanov, Stefan Blügel, Valery M. Uzdin
Publikováno v:
Frontiers in Physics, Vol 11 (2023)
Cubic chiral magnets exhibit a remarkable diversity of two-dimensional topological magnetic textures, including skyrmions. However, the experimental confirmation of topological states localized in all three spatial dimensions remains challenging. In
Externí odkaz:
https://doaj.org/article/d46143ebc9d04bc082c4c93b439c6336
Publikováno v:
Frontiers in Physics, Vol 11 (2023)
We report tailed skyrmions—a new class of stable soliton solutions of the 2D chiral magnet model. Tailed skyrmions have elongated shapes and emerge in a narrow range of fields near the transition between the spin spirals and the saturated state. We
Externí odkaz:
https://doaj.org/article/f239776476ff4fef81479659e74014ba
Autor:
Filipp N. Rybakov, Nikolai S. Kiselev, Aleksandr B. Borisov, Lukas Döring, Christof Melcher, Stefan Blügel
Publikováno v:
APL Materials, Vol 10, Iss 11, Pp 111113-111113-10 (2022)
Hopfions are an intriguing class of string-like solitons, named according to a classical topological concept classifying three-dimensional direction fields. The search for hopfions in real physical systems has been ongoing for nearly half a century,
Externí odkaz:
https://doaj.org/article/fd2ec3a027584368b6336e5f25d12b35
Autor:
Fengshan Zheng, Filipp N. Rybakov, Nikolai S. Kiselev, Dongsheng Song, András Kovács, Haifeng Du, Stefan Blügel, Rafal E. Dunin-Borkowski
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Skyrmions are topological two-dimensional spin textures that in three-dimensional systems resemble strings or tubes. Here, using transmission electron microscopy Zheng et al observe the braiding of skyrmion strings in FeGe and predict this phenomenon
Externí odkaz:
https://doaj.org/article/5943577719c84074bac1634bc473c588
Autor:
Andrii S. Savchenko, Vladyslav M. Kuchkin, Filipp N. Rybakov, Stefan Blügel, Nikolai S. Kiselev
Publikováno v:
APL Materials, Vol 10, Iss 7, Pp 071111-071111-12 (2022)
This work studies the resonance excitations of the three-dimensional skyrmions lattice in the finite thickness plate of an isotropic chiral magnet using spin dynamics simulations. We found that the absorption spectra and resonance modes differ from t
Externí odkaz:
https://doaj.org/article/4ecba40339e04c0889ab28d6eb299786
Autor:
Andrii S. Savchenko, Fengshan Zheng, Nikolai S. Kiselev, Luyan Yang, Filipp N. Rybakov, Stefan Blügel, Rafal E. Dunin-Borkowski
Publikováno v:
APL Materials, Vol 10, Iss 6, Pp 061110-061110-6 (2022)
The diversity of three-dimensional magnetic states in a FeGe nanocylinder is studied using micromagnetic simulations and off-axis electron holography in the transmission electron microscope. In particular, we report the observation of a dipole string
Externí odkaz:
https://doaj.org/article/37a00f9db98c4085b78ee92fc3935c7d
Autor:
Markus Hoffmann, Bernd Zimmermann, Gideon P. Müller, Daniel Schürhoff, Nikolai S. Kiselev, Christof Melcher, Stefan Blügel
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017)
Skyrmions, localized defects in the magnetization, can be stabilised in materials by the Dzyaloshinskii-Moriya interaction (DMI). Hoffmann et al. predict that, when the DMI is anisotropic, antiskyrmions can be formed and coexist with skyrmions, enabl
Externí odkaz:
https://doaj.org/article/4fd8c618b02a411cae14c663b571a51a
Autor:
Chiming Jin, Zi-An Li, András Kovács, Jan Caron, Fengshan Zheng, Filipp N. Rybakov, Nikolai S. Kiselev, Haifeng Du, Stefan Blügel, Mingliang Tian, Yuheng Zhang, Michael Farle, Rafal E Dunin-Borkowski
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017)
Proposals for skyrmion-based high-density memory devices require an understanding of the formation and shape of skyrmions in confined geometries. Here, the authors use electron holography to image magnetic textures in FeGe nanostripes and explore the
Externí odkaz:
https://doaj.org/article/5a09ab0d3180476badb8c249c5412bdd