Valley-dependent current generation in nanotubes by twisted light
KAUST DepartmentComputational Physics and Materials Science (CPMS)
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Permanent link to this recordhttp://hdl.handle.net/10754/628780
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AbstractEach electronic band of a nanotube is associated with a specific crystal orbital angular momentum, in analogy to crystal momentum. We develop the semiclassical equations of motion of electrons in such twisted Bloch bands perturbed by electric and magnetic fields. These equations demonstrate that the absorption of twisted light generates valley-dependent current along the nanotube in the presence of an external inhomogeneous magnetic field. We show that the valley-dependent current provides a venue to detect valley polarization in twisted Bloch bands.
CitationZang X, Singh N, Schwingenschlögl U (2018) Valley-dependent current generation in nanotubes by twisted light. Physical Review B 98. Available: http://dx.doi.org/10.1103/PhysRevB.98.085401.
SponsorsThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).
PublisherAmerican Physical Society (APS)
JournalPhysical Review B