For nanocomposite and photonic crystal interface a complete theoretic study of optical Tamm state is presented. The nanocomposite consists of prolate metallic nanoparticles dispersed in a transparent matrix. It is characterized by resonant effective permittivity; whereas the optical properties of the initial materials have no resonant features. The nanocomposite anisotropy optimizes Tamm state localization and makes the photonic band gap wider.
$^1$ Kirensky Institute of Physics, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036 Russia.
$^2$ Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041 Russia.