Magnetic and electric excitations in split ring resonators
Abstract
We studied the electric and magnetic resonance of Ushaped SRRs. We showed that higher order excitation modes exist in both of the electric and magnetic resonances. The nodes in the current distribution were found for all the resonance modes. It turns out that the magnetic resonances are the modes with oddnumber of halfwavelength of the current wave, i.e. 1/2, 3/2 and 5/2 wavelengths modes, and the electric resonances are modes with integer number of wholewavelength of current wave, i.e. 1, 2 and 3 wavelengths modes. We discussed the electric moment and magnetic moment of the electric and magnetic resonances, and their dependence to the length of two parallel side arms. We show that the magnetic moment of magnetic resonance vanishes as the length side arms of the SRR reduces to zero, i.e. a rod does not give any magnetic moment or magnetic resonance.
 Publication:

Optics Express
 Pub Date:
 2007
 DOI:
 10.1364/OE.15.017881
 arXiv:
 arXiv:0710.0812
 Bibcode:
 2007OExpr..1517881Z
 Keywords:

 Condensed Matter  Materials Science;
 Condensed Matter  Other
 EPrint:
 Journalref and DOI link added