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5 papers · 2 filters
Ternary Tetradymite Compounds as Topological Insulators
Lin-Lin Wang, Duane D. Johnson
Ternary tetradymites Bi2Te2S, Bi2Te2Se and Bi2Se2Te are found to be stable, bulk topological insulators via theory, showing band inversion between group V and VI pz orbitals. We id…
Optical forces in nanowire pairs and metamaterials
Rongkuo Zhao, Philippe Tassin, Thomas Koschny +1
We study the optical force arising when isolated gold nanowire pairs and metamaterials with a gold nanowire pair in the unit cell are illuminated with laser radiation. Firstly, we…
Large group delay in a microwave metamaterial analogue of electromagnetically induced transparency
Lei Zhang, Philippe Tassin, Thomas Koschny +3
We report on our experimental work concerning a planar metamaterial exhibiting classical electromagnetically induced transparency (EIT). Using a structure with two mirrored split-r…
Unveiling a two-dimensional electron gas with universal subbands at the surface of SrTiO3
A. F. Santander-Syro, O. Copie, T. Kondo +14
Similar to silicon that is the basis of conventional electronics, strontium titanate (SrTiO3) is the bedrock of the emerging field of oxide electronics. SrTiO3 is the preferred tem…
Conjugated gammadion chiral metamaterial with uniaxial optical activity and negative refractive index
R. Zhao, L. Zhang, J. Zhou +2
We demonstrate numerically and experimentally a conjugated gammadion chiral metamaterial that uniaxially exhibits huge optical activity and circular dichroism, and gives a negative…