Journal
PHYSICAL REVIEW B
Volume 91, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.91.041404
Keywords
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Funding
- European Union
- Deutsche Forschungsgemeinschaft (DFG) [SPP 1459]
- European Research Council [338957]
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Valley polarization in graphene breaks inversion symmetry and therefore leads to second-harmonic generation. We present a complete theory of this effect within a single-particle approximation. It is shown that this may be a sensitive tool to measure the valley polarization created, e.g., by polarized light and, thus, can be used for the development of ultrafast valleytronics in graphene.
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