Direct observation and imaging of a spin-wave soliton with p-like symmetry

Bonetti, S.; Kukreja, R.; Chen, Z.; Macià, F.; Hernàndez, J. M.; Eklund, A.; Backes, D.; Frisch, J.; Katine, J.; Malm, G.; Urazhdin, S.; Kent, A. D.; Stöhr, J.; Ohldag, H.; Dürr, H. A.

doi:10.1038/ncomms9889

Title: Direct observation and imaging of a spin-wave soliton with p-like symmetry

Journal Article · Mon Nov 16 00:00:00 EST 2015 · Nature Communications

DOI:https://doi.org/10.1038/ncomms9889· OSTI ID:1237588

^[1]; Kukreja, R. ^[2]; Chen, Z. ^[1]; Macià, F. ^[3]; Hernàndez, J. M. ^[3]; Eklund, A. ^[4]; Backes, D. ^[5]; Frisch, J. ^[2]; Katine, J. ^[6];

^[4]; Urazhdin, S. ^[7]; Kent, A. D. ^[5]; Stöhr, J. ^[2]; Ohldag, H. ^[2]; Dürr, H. A. ^[2]

Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Univ. of Barcelona (Spain)
KTH Royal Inst. of Technology, Stockholm (Sweden)
New York Univ. (NYU), NY (United States)
HGST Inc., San Jose, CA (United States)
Emory Univ., Atlanta, GA (United States)

Spin waves, the collective excitations of spins, can emerge as nonlinear solitons at the nanoscale when excited by an electrical current from a nanocontact. These solitons are expected to have essentially cylindrical symmetry (that is, s-like), but no direct experimental observation exists to confirm this picture. Using a high-sensitivity time-resolved magnetic X-ray microscopy with 50 ps temporal resolution and 35 nm spatial resolution, we are able to create a real-space spin-wave movie and observe the emergence of a localized soliton with a nodal line, that is, with p-like symmetry. Moreover, micromagnetic simulations explain the measurements and reveal that the symmetry of the soliton can be controlled by magnetic fields. Our results broaden the understanding of spin-wave dynamics at the nanoscale, with implications for the design of magnetic nanodevices.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

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

Grant/Contract Number:: AC03-76SF00515

OSTI ID:: 1237588

Report Number(s):: SLAC-PUB-16394; ncomms9889

Journal Information:: Nature Communications, Vol. 6; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 47 works

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