Variation of spin–orbit coupling and related properties in skyrmionic system Mn FexGe
We report a systematic study of the magnetic and magnetotransport properties in skyrmionic compounds Mn ${}_{1-x}$ Fe _x Ge. Helical-spin or skyrmion orders are formed in all the compositions, which allows us to study electron band-filling dependence of those periodically-winding spin textures. Magn...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2016-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/18/4/045006 |
| _version_ | 1797750887855161344 |
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| author | N Kanazawa K Shibata Y Tokura |
| author_facet | N Kanazawa K Shibata Y Tokura |
| author_sort | N Kanazawa |
| collection | DOAJ |
| description | We report a systematic study of the magnetic and magnetotransport properties in skyrmionic compounds Mn ${}_{1-x}$ Fe _x Ge. Helical-spin or skyrmion orders are formed in all the compositions, which allows us to study electron band-filling dependence of those periodically-winding spin textures. Magnetization characteristics reflect the variation in Dzyaloshinskii–Moriya interaction or spin–orbit coupling with chemical composition, typically as a change in the critical magnetic field. This tunable spin–orbit coupling enables control of skyrmion formation, such as its size, helicity and topology. Anomalous Hall effect in Mn ${}_{1-x}$ Fe _x Ge can also be a good measure of the strength of spin–orbit coupling. Anomalous Hall conductivity ${\sigma }_{{xy}}^{A}={S}_{H}M$ is moderately temperature-dependent, obeying the magnetization variation, except for those at low temperatures in FeGe accompanied by skew contribution. The constancy of anomalous Hall coefficient S _H against temperature manifests that the contribution from reciprocal space Berry phase induced by spin–orbit coupling is dominant in anomalous Hall conductivity. Strength of Dzyaloshinskii–Moriya interaction and anomalous Hall coefficient show a similar tendency in their band-filling dependence. Spin–orbit coupling plays a fundamental role behind both of the chiral magnetism and spin-dependent transport phenomena in this system. |
| first_indexed | 2024-03-12T16:40:23Z |
| format | Article |
| id | doaj.art-4b9bbdb76cd249928d11878a1a041579 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:40:23Z |
| publishDate | 2016-01-01 |
| publisher | IOP Publishing |
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| series | New Journal of Physics |
| spelling | doaj.art-4b9bbdb76cd249928d11878a1a0415792023-08-08T14:33:46ZengIOP PublishingNew Journal of Physics1367-26302016-01-0118404500610.1088/1367-2630/18/4/045006Variation of spin–orbit coupling and related properties in skyrmionic system Mn FexGeN Kanazawa0K Shibata1Y Tokura2Department of Applied Physics, The University of Tokyo , Tokyo 113-8656, JapanDepartment of Applied Physics, The University of Tokyo , Tokyo 113-8656, JapanDepartment of Applied Physics, The University of Tokyo , Tokyo 113-8656, Japan; RIKEN Center for Emergent Matter Science (CEMS) , Wako 351-0198, JapanWe report a systematic study of the magnetic and magnetotransport properties in skyrmionic compounds Mn ${}_{1-x}$ Fe _x Ge. Helical-spin or skyrmion orders are formed in all the compositions, which allows us to study electron band-filling dependence of those periodically-winding spin textures. Magnetization characteristics reflect the variation in Dzyaloshinskii–Moriya interaction or spin–orbit coupling with chemical composition, typically as a change in the critical magnetic field. This tunable spin–orbit coupling enables control of skyrmion formation, such as its size, helicity and topology. Anomalous Hall effect in Mn ${}_{1-x}$ Fe _x Ge can also be a good measure of the strength of spin–orbit coupling. Anomalous Hall conductivity ${\sigma }_{{xy}}^{A}={S}_{H}M$ is moderately temperature-dependent, obeying the magnetization variation, except for those at low temperatures in FeGe accompanied by skew contribution. The constancy of anomalous Hall coefficient S _H against temperature manifests that the contribution from reciprocal space Berry phase induced by spin–orbit coupling is dominant in anomalous Hall conductivity. Strength of Dzyaloshinskii–Moriya interaction and anomalous Hall coefficient show a similar tendency in their band-filling dependence. Spin–orbit coupling plays a fundamental role behind both of the chiral magnetism and spin-dependent transport phenomena in this system.https://doi.org/10.1088/1367-2630/18/4/045006skyrmionspin–orbit couplingB20-type compoundDzyaloshinskii–Moriya interactionanomalous Hall effect |
| spellingShingle | N Kanazawa K Shibata Y Tokura Variation of spin–orbit coupling and related properties in skyrmionic system Mn FexGe New Journal of Physics skyrmion spin–orbit coupling B20-type compound Dzyaloshinskii–Moriya interaction anomalous Hall effect |
| title | Variation of spin–orbit coupling and related properties in skyrmionic system Mn FexGe |
| title_full | Variation of spin–orbit coupling and related properties in skyrmionic system Mn FexGe |
| title_fullStr | Variation of spin–orbit coupling and related properties in skyrmionic system Mn FexGe |
| title_full_unstemmed | Variation of spin–orbit coupling and related properties in skyrmionic system Mn FexGe |
| title_short | Variation of spin–orbit coupling and related properties in skyrmionic system Mn FexGe |
| title_sort | variation of spin orbit coupling and related properties in skyrmionic system mn fexge |
| topic | skyrmion spin–orbit coupling B20-type compound Dzyaloshinskii–Moriya interaction anomalous Hall effect |
| url | https://doi.org/10.1088/1367-2630/18/4/045006 |
| work_keys_str_mv | AT nkanazawa variationofspinorbitcouplingandrelatedpropertiesinskyrmionicsystemmnfexge AT kshibata variationofspinorbitcouplingandrelatedpropertiesinskyrmionicsystemmnfexge AT ytokura variationofspinorbitcouplingandrelatedpropertiesinskyrmionicsystemmnfexge |