Gyrotropy of a Metamolecule: Wire on a Torus

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Persistent URL	http://purl.org/net/epubs/work/50917
Record Status	Checked
Record Id	50917
Title	Gyrotropy of a Metamolecule: Wire on a Torus
Contributors	N Papasimakis (ORC), VA Fedotov (ORC), K Marinov (ASTeC, STFC Daresbury Lab.), NI Zheludev (ORC)
Abstract	Sharing topology with numerous organic molecules, a wire helix bend into a torus gives a curious object with a gyrotropic behavior which is far from obvious. While a continuous constant current in opposite sections of the torus would create mutually cancelling contributions to its gyrotropic response, an array of tori can show strong circular dichroism linked to the excitation of standing current waves. Here we present the experimental study of optical activity in a chiral toroidal metamaterial and discuss its response in terms of multipole moments, including the elusive toroidal moment.
Organisation	ASTeC , ASTeC-MaRS , CI , STFC
Keywords	Physics , 41.20.Jb , 78.20.Ek
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Journal Article	Phys Rev Lett 103 (2009): 093901.	doi:10.1103/PhysRevLett.103.093901	Toroidal_PRL.pdf	2009