S T Chui et al 2006 J. Phys.: Condens. Matter 18 L89 doi:10.1088/0953-8984/18/6/L02
S T Chui1, C T Chan2 and Z F Lin3
Show affiliationsWe examine multilayer structures as negative refractive index and left-handed materials, and find that for one polarization there is a wide range (≈90°) of incident angle within which negative refraction will occur. This comes about because the group velocity and the Poynting vector have a large component parallel to the layers, no matter what the angle of incidence of the incoming radiation is. This behaviour in turn comes from the large anisotropy of the phase velocities. If one of the components is a ferromagnetic metal, the system can be a left-handed material above the ferromagnetic resonance frequency.
76.50.+g Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance
75.70.Cn Magnetic properties of interfaces (multilayers, superlattices, heterostructures)
Condensed matter: electrical, magnetic and optical
Surfaces, interfaces and thin films
Issue 6 (15 February 2006)
Received 21 October 2005
Published 25 January 2006
S T Chui et al 2006 J. Phys.: Condens. Matter 18 L89
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