Format

Send to

Choose Destination
See comment in PubMed Commons below
Phys Rev Lett. 2005 Dec 9;95(24):247009. Epub 2005 Dec 9.

Negative refraction in ferromagnet-superconductor superlattices.

Author information

1
Experimentalphysik V, Center for Electronic Correlations and Magnetism, Universit├Ąt Augsburg, 86135 Augsburg, Germany.

Abstract

Negative refraction, which reverses many fundamental aspects of classical optics, can be obtained in systems with negative magnetic permeability and negative dielectric permittivity. This Letter documents an experimental realization of negative refraction at millimeter waves, finite magnetic fields, and cryogenic temperatures utilizing a multilayer stack of ferromagnetic and superconducting thin films. In the present case the superconducting YBa2Cu3O7 layers provide negative permittivity while negative permeability is achieved via ferromagnetic (La:Sr)MnO3 layers for frequencies and magnetic fields close to the ferromagnetic resonance. In these superlattices the refractive index can be switched between positive and negative regions using external magnetic field as tuning parameter.

PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Physical Society
    Loading ...
    Support Center