Phys. Rev. E 64, 036203 (2001) [4 pages]Two-dimensional oscillatory patterns in semiconductors with point contactsReceived 17 January 2001; published 14 August 2001 Planar samples of n-GaAs with attached point contacts at different dc voltages may display a variety of spatiotemporal patterns arising from the dynamics of curved charge dipole waves. Patterns rank from oscillations due to recycling and motion of simple quasiplanar or cylindrical wave fronts to more complex patterns that include merging and splitting of different fronts. Results of numerical simulations are interpreted by means of simple one-dimensional asymptotic theories. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.64.036203
DOI:
10.1103/PhysRevE.64.036203
PACS:
05.45.-a, 85.30.Fg, 47.54.+r
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