Scientists have produced electron gas (2d-electron gas(2DEG)) with ultra-high
mobility, which can speed up transfer of quantum information and signal from one part of a
device to another and increase data storage and memory.
Analysis
• The need for attaining new functionalities in modern electronic devices has led to the
manipulation of property of an electron called spin degree of freedom along with its
charge.
• This has given rise to an altogether new field of spin-electronics or ‘spintronics’. It has
been realized that a phenomenon called the ‘Rashba effect’, which consists of splitting of
spin-bands in an electronic system, might play a key role in spintronic devices.
• Due to the high mobility of the electron gas, electrons do not collide inside the medium
for a long distance and hence do not lose the memory and information.
o Hence, such a system can easily remember and transfer its memory for a long time
and distance.
• In addition, since they collide less during their flow, their resistance is very low, and
hence they don’t dissipate energy as heat. So, such devices do not heat up easily and
need less input energy to operate.