Left-handed behavior of strontium-doped lanthanum manganite in the millimeter waveband

Khodzitsky, M. K.; Kalmykova, T. V.; Tarapov, S. I.; Belozorov, D. P.; Pogorily, A. M.; Tovstolytkin, A. I.; Belous, A. G.; Solopan, S. A.
August 2009
Applied Physics Letters;8/24/2009, Vol. 95 Issue 8, p082903
Academic Journal
Left-handed behavior of strontium-doped lanthanum manganite was revealed in the millimeter waveband. The bulk specimen of La1-xSrxMnO3, was used as a boundary medium for one-dimensional photonic crystal. In the absence of magnetic field known Tamm peak appears in the forbidden zone of photonic crystal indicating that manganite is a single negative medium (negative permittivity). In the presence of external magnetic field somewhat above frequency of ferromagnetic resonance the additional (field sensitive) transparency peak appears in photonic crystal forbidden zone, indicating that manganite becomes double negative medium (negative permittivity and permeability). Model theoretical calculations corroborate the experimental findings.


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