In: Electrical Engineering
what new advances are being made in solid state memory. Be sure to cite your sources.
Solid state memories are classified as charge storage memories and non charge storage based memory.
Charge storage based memory includes Flash, DRAM, sram.
NON charge storage based memories includes ferroelectric memory, phase controlled memory, ReRAM, MRAM .
As the scaling continues charge stored based memory suffers from reliablity point of view as the number of stored electrons reduces and scaling is limited to 20 nm technology node.
However beyong 20 nm non charge storage memory are promising.
Likewise FeRAM stores data in form of polarization, PCRAm is basically temperature controlled phase of material, Reram resitance is dependant on filament formation.
However non charge storage memories have problems like Feram is difficult to scale, endurance issue in Reram, read/write cycles in PCRAM etc.
Therefore research is moving very fast on improving non charge based memory and they will be seen very much commercially soon.
Ref: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8013049
https://pubs.acs.org/doi/abs/10.1021/nl073225h