Analytic Estimation of Two-Dimensional Electron Gas Density and Current-Voltage Characteristic in AlGaN/GaN HEMT’s

Donor-Like Surface Traps on Two-Dimensional Electron Gas and Current Collapse of AlGaN/GaN HEMTs

The effect of donor-like surface traps on two-dimensional electron gas (2DEG) and drain current collapse of AlGaN/GaN high electron mobility transistors (HEMTs) has been investigated in detail. The depletion of 2DEG by the donor-like surface states is shown. The drain current collapse is found to be more sensitive to the addition of positive surface charges. Surface trap states with higher ener...

Current { Voltage Characteristics of Two { Dimensional VortexGlass

We have performed Monte Carlo simulations to determine current{voltage characteristics of two vortex glass models in two dimensions. Our results connrm earlier studies which concluded that there is a zero temperature transition. Additionally we nd that, as the temperature approaches zero, the linear resistance vanishes exponentially, and the current scale, J nl , where non-linearities appear in...

Two-Dimensional Current Density Imaging

Imaging of electrical current by measuring the magnetic field which it produces requires the solution of the magnetic inverse problem. For a current restricted to a plane, the inverse problem can theoretically be solved by a linear spatial filtering method. We have demonstrated experimentally that currents restricted to the surface of a printed circuit board can be imaged using this method. To ...

The Density of States in the Two-dimensional Electron Gas and Quantum Dots

Two-dimensional electron gas near full polarization

We establish the consistency of the Fermi liquid description and find a relation between the Fermi liquid constants for a two-dimensional electron system near the point of full polarization due to a parallel magnetic field H. Our results enable us to predict connections between different thermodynamic properties of the system. In particular, we find that near the point of full polarization Hc ,...