Generation of magnetic skyrmion bubbles by inhomogeneous spin Hall currents

Heinonen, Olle; Jiang, Wanjun; Somaily, Hamoud; te Velthuis, Suzanne G. E.; Hoffmann, Axel

doi:10.1103/PhysRevB.93.094407

Generation of magnetic skyrmion bubbles by inhomogeneous spin Hall currents

Journal Article · Mon Mar 07 00:00:00 EST 2016 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.93.094407· OSTI ID:1339301

Heinonen, Olle ^[1]; Jiang, Wanjun ^[2]; Somaily, Hamoud ^[3]; te Velthuis, Suzanne G. E. ^[2]; Hoffmann, Axel ^[2]

Argonne National Lab. (ANL), Lemont, IL (United States); Northwestern-Argonne Institute for Science and Engineering, Evanston, IL (United States)
Argonne National Lab. (ANL), Lemont, IL (United States)
Argonne National Lab. (ANL), Lemont, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)

Recent experiments have shown that magnetic skyrmion bubbles can be generated and injected at room temperature in thin films. In this study, we demonstrate, using micromagnetic modeling, that such skyrmions can be generated by an inhomogeneous spin Hall torque in the presence of Dzyaloshinskii-Moriya interactions (DMIs). In the experimental Ta-Co₂₀Fe₆₀B₂₀ thin films, the DMI is rather small; nevertheless, the skyrmion bubbles are stable, or at least metastable on observational time scales.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

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

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1339301

Alternate ID(s):: OSTI ID: 1240477

Journal Information:: Physical Review B, Journal Name: Physical Review B Journal Issue: 9 Vol. 93; ISSN 2469-9950; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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