Imaging of discrete breathers.
In this paper I review our experiments on visualization of discrete breathers (intrinsic localized modes) in nonlinear lattices made of Josephson junctions. Properties of Josephson junctions and arrays made of such junctions are discussed in the Introduction. The visualization technique based on low temperature laser scanning microscopy (LSM) is described in detail. Images of discrete breathers in Josephson junction arrays of various geometries are presented. Possible further experiments that can be done using LSM technique are envisioned.
Ustinov
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Physikalisches Institut III, Universitat Erlangen-Nurnberg, Erwin-Rommel-Strasse 1, D-91058 Erlangen, Germany. ustinov@physik.uni-erlangen.de