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Optical magnetic metamaterials based on thick metal film perforated with rectangular nanohole arrays
Author(s) -
Yuan Li,
Chen Fuyi
Publication year - 2013
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201349040
Subject(s) - antisymmetric relation , materials science , metamaterial , permeability (electromagnetism) , plasmon , current density , condensed matter physics , metal , magnetic field , optics , optoelectronics , physics , chemistry , quantum mechanics , membrane , metallurgy , mathematical physics , biochemistry
The dependence of the optical magnetic property on metal film thickness and the origin of the magnetic property in thick metal (silver) film perforated with rectangular nanohole arrays were investigated using the finite‐difference time‐domain technique. A negative permeability was observed in the thickness range where two hybridized magnetic plasmon polariton resonances are present, and a big negative permeability was observed at certain thickness when the antisymmetric coupling between the electrical current density near the top and bottom film plane with the directions of electrical current density in the plane are present. Two types of antisymmetric coupling of electrical current density in the metal film were found to probably contribute to the permeability.