Details
| Original language | English |
|---|---|
| Pages (from-to) | 14-21 |
| Number of pages | 8 |
| Journal | Nano Letters |
| Volume | 22 |
| Issue number | 1 |
| Early online date | 22 Dec 2021 |
| Publication status | Published - 12 Jan 2022 |
| Externally published | Yes |
Abstract
Keywords
- cond-mat.mtrl-sci, cond-mat.str-el, magnetic force microscopy, spintronics, domain walls, topological order, chiral magnets, nonlinear magnetic response, FeGe
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanical Engineering
- Chemical Engineering(all)
- Bioengineering
- Chemistry(all)
- General Chemistry
- Materials Science(all)
- General Materials Science
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In: Nano Letters, Vol. 22, No. 1, 12.01.2022, p. 14-21.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Detection of Topological Spin Textures via Nonlinear Magnetic Responses
AU - Stepanova, Mariia
AU - Masell, Jan
AU - Lysne, Erik
AU - Schoenherr, Peggy
AU - Köhler, Laura
AU - Qaiumzadeh, Alireza
AU - Kanazawa, Naoya
AU - Rosch, Achim
AU - Tokura, Yoshinori
AU - Brataas, Arne
AU - Garst, Markus
AU - Meier, Dennis
N1 - Funding information: M.S., E.L. and D.M. acknowledge funding from the Research Council of Norway, project number 263228, and support through the Norwegian Micro- and Nano-Fabrication Facility, NorFab (project number 295864). M.S., E.L., D.M., A.Q., and A.B. acknowledge support by the Research Council of Norway through its Centres of Excellence funding scheme, Project No. 262633, “QuSpin”. D.M. thanks NTNU for support via the Onsager Fellowship Program and the Outstanding Academic Fellows Program. J.M. was financially supported as a Humboldt/JSPS International Research Fellow (19F19815). N.K. acknowledges funding from JSPS KAKENHI (Grant JP20H05155). A.Q. acknowledges the Norwegian Financial Mechanism Project No. 2019/34/H/ST3/00515, “2Dtronics”. A.R. acknowledges financial support by the Deutsche Forschungsgemeinschaft (DFG) within CRC 1238 (project number 277146847, subproject C04). N.K. and Y.T. acknowledge funding from Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST) (Grant JPMJCR1874). M.G. is supported by DFG SFB1143 (Project-id. 247310070) and DFG Project-id 270344603 and 324327023.
PY - 2022/1/12
Y1 - 2022/1/12
N2 - Topologically non-trivial spin textures, such as skyrmions and dislocations, display emergent electrodynamics and can be moved by spin currents over macroscopic distances. These unique properties and their nanoscale size make them excellent candidates for the development of next-generation logic gates, race-track memory, and artificial synapses for neuromorphic computing. A major challenge for these applications - and the investigation of nanoscale magnetic structures in general - is the realization of adequate detection schemes that provide the required resolution and sensitivity. Here, the local magnetic properties of topological defects in FeGe are studied, revealing a pronounced non-linear response that distinguishes the individual spin textures from the helimagnetic background. Combining magnetic force microscopy and micromagnetic simulations, the non-linear response is linked to the local magnetic susceptibility, representing an innovative approach for detecting topologically non-trivial spin textures and domain walls. Based on the findings, a read-out scheme is proposed using planar micro-coils compatible with semiconductor fabrication methods, facilitating the transfer to spintronics devices.
AB - Topologically non-trivial spin textures, such as skyrmions and dislocations, display emergent electrodynamics and can be moved by spin currents over macroscopic distances. These unique properties and their nanoscale size make them excellent candidates for the development of next-generation logic gates, race-track memory, and artificial synapses for neuromorphic computing. A major challenge for these applications - and the investigation of nanoscale magnetic structures in general - is the realization of adequate detection schemes that provide the required resolution and sensitivity. Here, the local magnetic properties of topological defects in FeGe are studied, revealing a pronounced non-linear response that distinguishes the individual spin textures from the helimagnetic background. Combining magnetic force microscopy and micromagnetic simulations, the non-linear response is linked to the local magnetic susceptibility, representing an innovative approach for detecting topologically non-trivial spin textures and domain walls. Based on the findings, a read-out scheme is proposed using planar micro-coils compatible with semiconductor fabrication methods, facilitating the transfer to spintronics devices.
KW - cond-mat.mtrl-sci
KW - cond-mat.str-el
KW - magnetic force microscopy
KW - spintronics
KW - domain walls
KW - topological order
KW - chiral magnets
KW - nonlinear magnetic response
KW - FeGe
UR - http://www.scopus.com/inward/record.url?scp=85122585772&partnerID=8YFLogxK
U2 - 10.1021/acs.nanolett.1c02723
DO - 10.1021/acs.nanolett.1c02723
M3 - Article
VL - 22
SP - 14
EP - 21
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 1
ER -