Wednesday, June 5, 2013

1306.0677 (S. Longhi et al.)

Transparency at the interface between two isospectral crystals    [PDF]

S. Longhi, G. Della Valle
Reflection at an interface separating two different media is a rather universal phenomenon which arises because of wave mismatching at the interface. By means of supersymmetric quantum mechanics methods, it is shown that a fully transparent interface can be realized, connecting two isospectral but different one-dimensional crystals. An example of reflectionless interface is presented for the sinusoidal (Mathieu) crystal connected to a non-sinusoidal potential by a transparent domain wall.
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