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Super-diffusion of Photoexcited Carriers in Topological Insulator Nanoribbons
Rodrigo Becerra Silva, Jay Huang, Bob Minyu Wang +3
Understanding the ultrafast dynamics and transport of photoexcited carriers in topological insulators is crucial for the optical manipulation of spins and may shed light on the nat…
Electrically Switchable Circular Photogalvanic Effect in Methylammonium Lead Iodide Microcrystals
Yuqing Zhu, Ziyi Song, Rodrigo Becerra Silva +6
We investigate the circular photogalvanic effect (CPGE) in single-crystalline methylammonium lead iodide microcrystals under a static electric field. The external electric field ca…
Schottky Electric Field Induced Circular Photogalvanic Effect in Cd3As2 Nanobelts
Bob Minyu Wang, Yuqing Zhu, Henry Clark Travaglini +2
Dirac semimetals are expected to forbid the manifestation of the circular photogalvanic effect (CPGE) because of their crystal inversion symmetry. Here, we report the observation o…