Solitons in PT-symmetric SRR dimers chain with alternating electric and magnetic coupling

Dynamics of a PT-symmetry chain comprising split-ring resonator (SRR) dimers with both gain and loss are investigated. A dimer is built as a pair of opposite orientations of the SRR gaps which result in the alternating electric and magnetic coupling in the chain. The transition from the exact to the broken PT-symmetric phase is presented in the linear regime. Considering the Kerr nonlinearity, it is shown that the localized modes in the form of solitons exist in the continuum limit approximation. Such localized structures are studied in the phase plane and numerical expressions are also obtained.