Analysis and Compact Modeling of Insulator–Metal Transition Material-Based PhaseFET Including Hysteresis and Multidomain Switching

We present a physics-based compact model that captures the behavior of phase-transition materials. The model includes a self-heating module that captures the change in temperature with device operation and the resulting phase change. This is the first compact model that captures the temperature-dependent multidomain switching and the hysteresis behavior seen in such devices. The model is implemented in Verilog-A and validated with experimental data for various geometries and temperatures. It is further coupled with industry standard BSIM-BULK, ASM-HEMT, and BSIM-CMG models for SPICE simulation and validated for various phase-transition FETs, illustrating the previously proposed steep switching effect and a subthreshold slope below the Boltzmann limit of 60 mV/decade.