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HL: Fachverband Halbleiterphysik

HL 43: Photonic crystals I

HL 43.4: Vortrag

Donnerstag, 26. März 2009, 10:15–10:30, POT 151

Stereometamaterials — Na Liu¹, •Hui Liu², Shining Zhu², and Harald Giessen¹ — ¹4th Physics Institute, University of Stuttgart, 70569 Stuttgart, Germany — ²Department of Physics, Nanjing University, Nanjing 210093, P. R. China

Abstract: We introduce a novel concept to nano-photonics, namely stereometamaterials. As model system of stereometamaterials, we theoretically and experimentally study meta-dimers, which consist of a stack of two identical split-ring resonators[1] in each unit cell with various twist angles. We demonstrate that the interplay between electric and magnetic interactions plays a crucial role for the optical properties[2]. Specifically, the influence of higher-order electric multipoles becomes clearly evident. The twisting of stereometamaterials paves the road towards engineering of complex plasmonic nanostructures with tailored electric and magnetic interactions.

[1] N. Liu et al., *Three-dimensional photonic metamaterials at optical frequencies*. Nature Mater. 7, 31 (2008). [2] H. Liu et al., *Magnetic plasmon hybridization and optical activity at optical frequencies in metallic nanostructures.*Phys. Rev. B. 76, 073101 (2007).