Chshelokova, Alyona V.; Kapitanova, Polina V.; Poddubny, Alexander N.; Filonov, Dmitry S.; Slobozhanyuk, Alexey P.; Kivshar, Yuri S.; Belov, Pavel A.
We demonstrate how to realize an indefinite media with hyperbolic isofrequency surfaces in wavevector space by employing two-dimensional metamaterial transmission lines. We classify different types of such media, and visualize the peculiar character of wave propagation by study of the cross-like emission pattern of a current source placed in the lattice center. Our results are supported by a solution of the Kirchhoff equations, an analytical theory, and experimental data.
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