Nonreciprocity of backward volume spin wave beams excited by the curved focusing transducer
- Univ. of Perugia, Perugia (Italy). Dep. of Physics and Geology
- Russian Academy of Sciences (RAS), Saratov (Russian Federation). Inst. of Radioengineering and Electronics (IRE)
- Russian Academy of Sciences (RAS), Saratov (Russian Federation). Inst. of Radioengineering and Electronics (IRE); Saratov State Univ. (Russian Federation)
- Saratov State Univ. (Russian Federation)
- Univ. of California, Riverside, CA (United States)
The focusing effect for spin waves excited by a curved micrometer-sized coplanar waveguide transducer on top of a 5-μm-thick epitaxial yttrium iron garnet film is studied by means of the micro-focused Mandelstam-Brillouin light scattering technique and micromagnetic simulations. The curvilinear transducer is designed to focus the backward volume spin waves on the in-plane bias magnetic field applied along the symmetry axis of the transducer. We show that two-dimensional maps of spin wave intensity exhibit nonreciprocal properties without mirror symmetry with respect to the magnetic field direction and the focusing effect. The observed effects are the consequence of nonreciprocity of the backward volume spin waves travelling at an angle toward the bias field direction.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES); Univ. of California, Riverside, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Russian Science Foundation
- Grant/Contract Number:
- SC0012670; 17-19-01673; 16-07- 01092
- OSTI ID:
- 1566653
- Alternate ID(s):
- OSTI ID: 1477208
- Journal Information:
- Applied Physics Letters, Vol. 113, Issue 15; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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