3 papers
cond-mat.mes-hall2026
Field-Induced Dissociation Reveals Excitonic Long-Range Photocarrier Transport in Bulk-Insulating Bi2Se3 Nanoribbons
Rodrigo Becerra Silva, Xiang Yi, Ziyi Song +1
Photoexcited charge carriers in topological insulators display anomalously long-range transport at cryogenic temperatures, but the underlying mechanism remains under debate. Here w…
cond-mat.mes-hall2025
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…
cond-mat.mes-hall2024
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…