Towards graded-index magnonics: Steering spin waves in magnonic networks
Physical Review B - Condensed Matter and Materials Physics
American Physical Society
Magnonics explores precessional excitations of ordered spins in magnetic materials - so-called spin waves - and their use as information and signal carriers within networks of magnonic waveguides. Here, we demonstrate that the nonuniformity of the internal magnetic field and magnetization inherent to magnetic structures creates a medium of graded refractive index for propagating magnetostatic waves and can be used to steer their propagation. The character of the nonuniformity can be tuned and potentially programmed using the applied magnetic field, which opens exciting prospects for the field of graded-index magnonics.
The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under Grant Agreement No. 247556 (NoWaPhen), from the Engineering and Physical Sciences Research Council of the United Kingdom under Projects No. EP/L019876/1 and No. EP/L020696/1, from Russian Science Foundation (Project No. 14-19-00760), and the Scholarship of the President of Russian Federation (SP-313.2015.5).
This is the final version of the article. Available from the American Physical Society via the DOI in this record.
The erratum to this article was published in Physical Review B volume 95, article 019901. DOI: http://dx.doi.org/10.1103/PhysRevB.95.019901
The erratum to this article is in ORE: http://hdl.handle.net/10871/26160
Vol. 92, article 020408(R)