It is shown that in in-plane magnetized ferromagnetic films there exist backward volume waves with a negative group velocity anti-parallel to the in-plane wave vector of propagation. Analytical expressions of the group velocity are given. Analogies and differences with electromagnetic waves propagating in backward-wave isotropic materials are discussed.

Magnetic Matter Spin Waves with “Negative” Group Velocity - Presentazione poster by R. Zivieri

ZIVIERI, Roberto
2015

Abstract

It is shown that in in-plane magnetized ferromagnetic films there exist backward volume waves with a negative group velocity anti-parallel to the in-plane wave vector of propagation. Analytical expressions of the group velocity are given. Analogies and differences with electromagnetic waves propagating in backward-wave isotropic materials are discussed.
2015
978-88-941141-0-2
Metamaterials, group velocity, backward volume waves
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2337897
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