Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Metlov, Konstantin L."'
Publikováno v:
Phys. Rev. B 109, L220408 (2024)
Magnetic hopfions are three-dimensional localized magnetic topological solitons which can exist in the bulk of magnetic materials. Based on a Ritz model for magnetic hopfions in a chiral magnet, the unpolarized magnetic small-angle neutron scattering
Externí odkaz:
http://arxiv.org/abs/2404.17998
Autor:
Metlov, Konstantin L.
Magnetic hopfions are three-dimensional localized topological solitons in the volume of a magnet. In this work, starting with a classical free energy density of a helimagnet, an approximate variational model of hopfions is studied. The hopfion stabil
Externí odkaz:
http://arxiv.org/abs/2404.07964
Autor:
Bersweiler, Mathias, Oba, Yojiro, Sinaga, Evelyn Pratami, Peral, Inma, Titov, Ivan, Adams, Michael P., Metlov, Konstantin L., Michels, Andreas
Publikováno v:
Physical Review B 108, 094434 (2023)
Taking advantage of recent progress in neutron instrumentation and in the understanding of magnetic-field-dependent small-angle neutron scattering, here, we study the three-dimensional magnetization distribution within an isotropic Nd-Fe-B bulk magne
Externí odkaz:
http://arxiv.org/abs/2303.15330
Autor:
Metlov, Konstantin L.
A coding scheme is introduced, allowing to store a set of linked bit strings in planar magnetic nanoelements with holes. Analytical expressions for the corresponding magnetization distributions are developed up to a homotopy and the specific examples
Externí odkaz:
http://arxiv.org/abs/2302.10819
Autor:
Metlov, Konstantin L.
Publikováno v:
Physica D 443, 133561 (2023)
Localized magnetic topological solitons with Hopf index of 1 in an unbounded bulk magnet are studied theoretically, starting with the classical micromagnetic Hamiltonian. It is shown analytically that (like Bloch and N\'eel walls in classical magneti
Externí odkaz:
http://arxiv.org/abs/2202.03123
Autor:
Oba, Yojiro, Bersweiler, Mathias, Titov, Ivan, Adachi, Nozomu, Todaka, Yoshikazu, Gilbert, Elliot Paul, Steinke, Nina-Juliane, Metlov, Konstantin L., Michels, Andreas
Publikováno v:
Phys. Rev. Materials 5, 084410 (2021)
Magnetic-field-dependent unpolarized small-angle neutron scattering (SANS) experiments demonstrate that high-pressure torsion (HPT) straining induces spin misalignments in pure Ni, which persist in magnetic fields up to 4 T. The spin-misalignment sca
Externí odkaz:
http://arxiv.org/abs/2105.04167
Autor:
Donnelly, Claire, Metlov, Konstantin L., Scagnoli, Valerio, Guizar-Sicairos, Manuel, Holler, Mirko, Bingham, Nicholas S., Raabe, Jörg, Heyderman, Laura J., Cooper, Nigel, Gliga, Sebastian
Vortex rings are remarkably stable structures occurring in numerous systems: for example in turbulent gases, where they are at the origin of weather phenomena [1]; in fluids with implications for biology [2]; in electromagnetic discharges [3]; and in
Externí odkaz:
http://arxiv.org/abs/2009.04226
Autor:
Boylo, Irina V., Metlov, Konstantin L.
Publikováno v:
R. Soc. Open Sci. 8:210677 (2021)
Because the local concentration of vacancies in any material is bounded, their motion must be accompanied by nonlinear effects. Here we look for such effects in a simple model for electric field driven vacancy motion in memristors, solving the corres
Externí odkaz:
http://arxiv.org/abs/2004.04465
Publikováno v:
Phys. Rev. B 101, 214410 (2020)
A recent theory [Metlov and Michels, Phys. Rev. B 91, 054404 (2015)] predicts a qualitatively new effect in the magnetic small-angle neutron scattering (SANS) cross section of statistically-isotropic disordered ferromagnetic media. The effect is due
Externí odkaz:
http://arxiv.org/abs/1912.11816
The magnetic textures on nanoscale possess topological features due to the continuity of the magnetization vector field and its boundary conditions. In thin planar nanoelements, where the dependence of the magnetization across the thickness is inesse
Externí odkaz:
http://arxiv.org/abs/1810.06011