Control of spatial structures in a semiconductor-gas discharge system with a semi-insulating GaAs cathode

Nonlinear current transport in transversely extended gas discharge system with a semi-insulating GaAs cathode is studied. The emerging spatial patterns appear in the semiconductor electrode, while the application of a thin gas-discharge gap allows to visualize the patterns. Sequences of scenarios in the pattern formation under changing control parameters are presented. It is experimentally shown that the dynamics of the structure is not noticeably influenced by inhomogeneities of the experimental system. Among results obtained, variation of scenarios under changing the temperature of the GaAs electrode are presented.