Transverse Magneto-Optical Kerr Effect in Magnetite Covered by Array of Gold Nanostripes

Wide-band enhancement of the transverse magneto-optical Kerr effect in magnetite-based plasmonic crystals

“…Recent advances in nanotechnology allow one to synthesize magnetic nanostructures where the magnitude of TMOKE is significantly increased in the vicinity of optical resonances [20][21][22][23][24][25]. In particular, TMOKE enhancement has been demonstrated in magnetoplasmonic crystals [26][27][28][29][30][31][32][33] and magnetoplasmonic nanoantennas [34][35][36][37] where plasmonic resonances come into play. Of particular interest is the TMOKE in transmission obtained in structures which lack of mirror symmetry.…”

Transverse magneto-optical Kerr effect enhanced at the bound states in continuum

“…However, in traditional bulk metals magneto-optical effects are weak, and the reflectivity modulation is on the order of 10 −2 ÷10 −4 [2][3][4]. A promising alternative is to exploit the plasmonic resonances of the structure [5][6][7][8][9][10][11][12][13]. For instance, the TMOKE strength up to 1.5% has been demonstrated in the hybrid nanostructures where the magnetic material is placed near a metallic layer, supporting the surface plasmon resonance [7].…”