Helical magnetic structure and the anomalous and topological Hall effects in epitaxial B20 Fe.sub.1-y./sub.Co.sub.y./sub.Ge films

0510857 - FZÚ 2020 RIV US eng J - Článek v odborném periodiku
Spencer, C.S. - Gayles, J. - Porter, N.A. - Sugimoto, S. - Aslam, Z. - Kinane, C.J. - Charlton, T.R. - Freimuth, F. - Chadov, C. - Langridge, S. - Sinova, Jairo - Felser, C. - Bluegel, S. - Mokrousov, Y. - Marrows, C.H.
Helical magnetic structure and the anomalous and topological Hall effects in epitaxial B20 Fe_1-yCo_yGe films.
Physical Review B. Roč. 97, č. 21 (2018), s. 1-19, č. článku 214406. ISSN 2469-9950. E-ISSN 2469-9969
Grant CEP: GA ČR GB14-37427G
GRANT EU: European Commission(XE) 610115 - SC2
Institucionální podpora: RVO:68378271
Klíčová slova: helical magnetic structure * anomalous and topological hall effects * symmetry analysis * epitaxial B20 Fe_1-yCo_yGe films * skyrmions
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.736, rok: 2018
Způsob publikování: Omezený přístup
https://doi.org/10.1103/physrevb.97.214406

Epitaxial films of the B20-structure compound Fe1−yCoyGe were grown by molecular beam epitaxy on Si (111)substrates.ThemagnetizationvariedsmoothlyfromthebulklikevaluesofoneBohrmagnetonperFeatom forFeGetozerofornonmagneticCoGe.ThechirallatticestructureleadstoaDzyaloshinskii-Moriyainteraction (DMI), and the films’ helical magnetic ground state was confirmed using polarized neutron reflectometry measurements.Thepitchofthespinhelix,measuredbythismethod,varieswithCocontenty anddivergesaty ∼ 0.45.ThisindicatesazerocrossingoftheDMI,whichwereproducedincalculationsusingfirst-principlesmethods. We also measured the longitudinal and Hall resistivity of our films as a function of magnetic field, temperature, and Co contenty. The Hall resistivity is expected to contain contributions from the ordinary, anomalous, and topological Hall effects

Trvalý link: http://hdl.handle.net/11104/0301228