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A lack of inversion symmetry coupled with the presence of time‐reversal symmetry endows 2D transition metal dichalcogenides with individually addressable valleys in momentum space at the K and K′ points in the first Brillouin zone. This valley addressability opens up the possibility of using the momentum state of electrons, holes, or excitons as a completely new paradigm in information processing...
In a valleytronic material, the stable momentum valleys of charge carriers form the computational basis states |0> and |1>. In article number 1801483, Steven A. Vitale and co‐workers show that circularly polarized photons can be used to prepare (σ+, red), manipulate (yellow), and detect (σ−, green) the carrier state, while electric fields move (vertical) and manipulate (horizontal) the carriers...
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