Thanks for this Green!
I had no idea cosmic rays were responsible for those errors. That explains why the GaAs material has the advantage :)
Your article refers to DRAM and I found an old article (probably significanly cout of date) that says SRAM is 1000 times more susceptible to cosmic rays!
http://www.geek.com/chips/sram-chips-plagued-by-cosmic-rays-553340/
I guess this explains why POET can improve soft error rates in memories by several orders of magnitude.