Photonic-crystal waveguides are excellent model systems to investigate band-gap related phenomena in condensed matter physics. An example is the effect of disorder on the band edge. Even for state-of-the-art systems, the smallest effects of disorder are enhanced in the so-called slow-light regime, eventually leading to Anderson localization and, hence, breakdown of the transport of light. We employ...
We present broadband reflectivity measurements on micropillars, resolving distinct modes inside the cavity resonance. We observe that the spectral mode position and spacing strongly depend on both pillar diameter and illumination position.
We present experimental results on the optical and magnetic properties of transition metal films with sub-wavelength hole arrays. Magneto-optic measurements show a spectacular magneto-optic response at wavelengths where surface plasmon-polaritons are supported by the structure.
Mn films from the sub-monolayer to about 100Å film thickness are grown on Si(111)–(√3×√3):Bi. Mn is observed to remove Bi from the surface reconstruction at room temperature, where Mn growth is polycrystalline. Annealing to 250°C leads to ordered films with a Si layer on top of a Mn film. Growth at elevated temperature results in a complicated sequence of two distinct Mn phases.
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