Generation of propagating backward volume spin waves by phase-sensitive mode conversion in two-dimensional microstructures

Journal Article · Mon Apr 01 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4800005· OSTI ID:22162829

Braecher, T.; Sebastian, T. ^[1]; Pirro, P.; Westermann, J.; Laegel, B.; Hillebrands, B. ^[1]; Van de Wiele, B. ^[2]; Vansteenkiste, A. ^[3]

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1. Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universitaet Kaiserslautern, D-67663 Kaiserslautern (Germany)
2. Department of Electrical Energy, Systems and Automation, Ghent University, B-9000 Ghent (Belgium)
3. Department of Solid State Sciences, Ghent University, B-9000 Ghent (Belgium)

We present the generation of propagating backward volume (BV) spin waves in a T shaped Ni{sub 81}Fe{sub 19} microstructure. These waves are created from counterpropagating Damon Eshbach spin waves, which are excited using microstrip antennas. By employing Brillouin light scattering microscopy, we show how the phase relation between the counterpropagating waves determines the mode generated in the center of the structure, and prove its propagation inside the longitudinally magnetized part of the T shaped microstructure. This gives access to the effective generation of backward volume spin waves with full control over the generated transverse mode.

• OSTI ID: 22162829
• Journal Information: Applied Physics Letters, Vol. 102, Issue 13; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTENNAS
CRYSTAL STRUCTURE
IRON ALLOYS
LIGHT SCATTERING
MICROSTRUCTURE
MODE CONVERSION
NICKEL ALLOYS
SPECTRA
SPIN WAVES
TWO-DIMENSIONAL CALCULATIONS
WAVE PROPAGATION