Scaling, rotation, and channeling behavior of helical and skyrmion spin textures in thin films of Te-doped Cu 2 OSeO 3

Han, M. -G.; Garlow, J. A.; Kharkov, Y.; Camacho, L.; Rov, R.; Sauceda, J.; Vats, G.; Kisslinger, K.; Kato, T.; Sushkov, O.; Zhu, Y.; Ulrich, C.; Söhnel, T.; Seidel, J.

doi:10.1126/sciadv.aax2138

Scaling, rotation, and channeling behavior of helical and skyrmion spin textures in thin films of Te-doped Cu ₂ OSeO ₃

Journal Article · Fri Mar 27 00:00:00 EDT 2020 · Science Advances

DOI:https://doi.org/10.1126/sciadv.aax2138· OSTI ID:1616435

^[1]; ^[1]; Kharkov, Y. ^[2]; ^[3]; ^[4]; ^[2]; ^[2]; ^[5]; Kato, T. ^[6]; Sushkov, O. ^[2]; ^[1]; ^[2]; ^[4]; ^[2]

Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
Univ. of New South Wales, Sydney, NSW (Australia)
Univ. of Auckland (New Zealand)
Univ. of Auckland (New Zealand); Victoria Univ. of Wellington, Wellington (New Zealand). MacDiarmid Inst. of Advanced Materials and Nanotechnology
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Nanostructures Research Lab., Nagoya (Japan). Japan Fine Ceramics Center

Topologically nontrivial spin textures such as vortices, skyrmions, and monopoles are promising candidates as information carriers for future quantum information science. Their controlled manipulation including creation and annihilation remains an important challenge toward practical applications and further exploration of their emergent phenomena. Here, we report controlled evolution of the helical and skyrmion phases in thin films of multiferroic Te-doped Cu₂OSeO₃ as a function of material thickness, dopant, temperature, and magnetic field using in situ Lorentz phase microscopy. We report two previously unknown phenomena in chiral spin textures in multiferroic Cu₂OSeO₃: anisotropic scaling and channeling with a fixed-Q state. The skyrmion channeling effectively suppresses the recently reported second skyrmion phase formation at low temperature. Our study provides a viable way toward controlled manipulation of skyrmion lattices, envisaging chirality-controlled skyrmion flow circuits and enabling precise measurement of emergent electromagnetic induction and topological Hall effects in skyrmion lattices.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: Australian Research Council (ARC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: SC0012704

OSTI ID:: 1616435

Report Number(s):: BNL--214879-2020-JAAM

Journal Information:: Science Advances, Journal Name: Science Advances Journal Issue: 13 Vol. 6; ISSN 2375-2548

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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