Analysis of interactions between drifting plasma waves in 2DEG semiconductors and electromagnetic space harmonic waves using three-dimensional transverse magnetic mode method

• Main Authors: Abdul Manaf, Hashim, Mohd. Ahir, Zon Fazlila, Kasai, Seiya, Hashizume, Tamotsu, Hasegawa, Hideki
• Format: Book Section
• Published: American Institute of Physics 2009
• Subjects: QC Physics; TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/13071/; http://dx.doi.org/10.1063/1.3192260

A theoretical three-dimensional transverse magnetic (TM) mode analysis to describe the presence of interactions between surface plasma waves of carriers in a two-dimensional electron gas (2DEG) at AlGaAs/GaAs heterostructure and electromagnetic space harmonics slow waves using the so-called interdigital-gated high-electron-mobility-transistor (HEMT) plasma wave devices is presented. First, the device structure and the outline of theoretical formulation to determine the admittance of the interdigital structure are described. Then, the analysis of the space harmonics propagating through the interdigital slow-wave structures is performed. Next, the numerical procedures to solve the integral equations which are used in determining the admittance are explained. Finally, we point out and discuss the main results of the theoretical analysis where an appearance of negative conductance is obtained.