Optical properties of antiferromagnetic/ion-crystal superlattices

Optical Properties of Antiferromagnetic/Ion-Crystalic Photonic Crystals

“…The transmission spectra based on FeF2/TIBr PCs reveal that there exist two intriguing guided modes in a wide stop band [11]. Additionally, FeF2/TIBr PCs possess either the negative refraction or the quasi left-handedness, or even simultaneously hold them at certain frequencies of two guided modes, which require both negative magnetic permeability of AF layers and negative permittivity of IC layers.…”

“…Recently, our group investigated the optical properties of antiferromagnetic/ ion-crystal (AF/IC) PCs [8][9][10][11]. It is well known that the two resonant frequencies of AFs, such as, FeF2 and MnF2, fall into the millimeter or far infrared frequencies regions and some ionic semiconductors possess a very low phonon-resonant frequency range like the AFs.…”

“…In the presence of external magnetic field and damping, MPPs spectra display two petty bulk mode bands with negative group velocity. It is worthy of mentioning that many surface modes emerge in the vicinity of two petty bulk mode bands, and that some surface modes bear nonreciprocality [11]. The optical properties of the AF/IC PCs can be modulated by an external magnetic field.…”

The comparative study of bulk magneto-phonon and magnetic polaritons of lateral antiferromagnetic superlattices for potential THz applications

“…Compared with complicated two-and three-dimensional photonic crystals [7][8][9][10], the tunable one-dimensional photonic crystals via external stimuli without changing any constituents are readily available and widely used [11][12][13][14]. Since the idea of a lateral superlattice was originally suggested by Wang and Tilley [15], investigations on the topic of lateral magnetic superlattice have become increasingly attractive [15][16][17][18][19][20].…”