2026-04-03T23:27:01Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1597732025-11-19T20:27:09Zcom_2072_1057col_2072_478822col_2072_478917

Spin wave excitation patterns generated by spin torque oscillators Macià Bros, Ferran Hoppensteadt, F. C. Kent, A. D. Oscil·ladors elèctrics Ferromagnetisme Spin (Física nuclear) Electric oscillators Ferromagnetism Nuclear spin Spin torque nano oscillators (STNO) are nano-scale devices that can convert a direct current into short wave-length spin-wave excitations in a ferromagnetic layer. We show that arrays of STNO can be used to create directional spin-wave radiation similar to electromagnetic antennas. Combining STNO excitations with planar spin waves also creates interference patterns. We show that these interference patterns are static and have information on the wavelength and phase of the spin waves emitted from the STNO. We describe means of actively controlling spin-wave radiation patterns with the direct current flowing through STNO, which is useful in on-chip communication and information processing and could be a promising technique for studying short wave-length spin waves in different materials. 2020-05-12T15:42:25Z 2020-05-12T15:42:25Z 2014 2020-05-12T15:42:25Z info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 0957-4484 https://hdl.handle.net/2445/159773 699914 eng Versió postprint del document publicat a: https://doi.org/10.1088/0957-4484/25/4/045303 Nanotechnology, 2014, vol. 25, num. 4, p. 045303 https://doi.org/10.1088/0957-4484/25/4/045303 (c) Institute of Physics (IOP), 2014 info:eu-repo/semantics/openAccess 10 p. application/pdf application/pdf Institute of Physics (IOP) Articles publicats en revistes (Física de la Matèria Condensada)