Double barrier design proposed to enhance tunneling electroresistance

https://phys.org/news/2023-08-barrier-tunneling-electroresistance.html

"double barrier ferroelectric tunnel junction multi-state storage... high TER ratios quantify change in conductance between 2 polarization states... transmission coefficient double barrier structure, 2 single barriers in series, related to product transmission coefficients of 2 single barriers... increases exponentially... 2 additional polarization states with head-to-head and tail-to-tail ferroelectric polarization achieved by separately controlling polarization direction of each barrier, resulting in multiple resistance states"