
Physics
Terahertz signatures of ultrafast Dirac fermion relaxation at the surface of topological insulators
S. Kovalev, K. Tielrooij, et al.
This research conducted by S. Kovalev and colleagues reveals groundbreaking insights into ultrafast carrier dynamics in topological insulators. By utilizing photoexcitation with terahertz photons, the study uncovers the astonishingly rapid relaxation of charge carriers in Dirac surface states, promising exciting potential for enhanced THz nonlinear conversion efficiencies.
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