NewsDouble layer of graphene helps to control spin
currents

17th October 2019by admin0
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In order to make transistors that operate using the
spin of electrons rather than their charge, it is necessary to find
a way of switching spin currents on and off. Furthermore, the
lifetime of the spins should at least be equal to the time taken
for these electrons to travel through a circuit. University of
Groningen scientists have now taken an important step forward by
creating a device that meets both of these requirements, based on a
double layer of graphene on top of a layer of tungsten disulfide.
Their results have been published on 16 October in the journal
Physical Review B.

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      The New Fusion technology is based on a phenomenon called triplet-triplet annihilation (TTA) which is a process in which two triplet excitons annihilate and produce a higher energy singlet exciton.

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