Selective operation of enhancement and depletion modes of nanoscale field-effect transistors

https://phys.org/news/2024-03-depletion-modes-nanoscale-field-effect.html

"5 nm dielectric alumina thickness enables electrostatic interaction even without external voltage... with low-work function metal aluminum (4.4 eV), FET operates in enhancement mode... with high-work function gate metal gold (5.0 eV), certain number of holes induced in channel at 0 gate voltage lead to good current (depletion mode)... for larger thicknesses FETs in enhancement mode even for high-work function gate metals... compact, accurate, reconfigurable oscillator, quantum, high-frequency (D mode) devices"