Enhancing Hot-Carrier Lifetime through Spin Splitting and Strain Interaction in Chiral Perovskite Materials

Physical Review Letters 2026

View at publisher
Authors: Yuling Huang, Xiao-Feng Luo, Shaokuan Gong, Jie Xue, Haipeng Lu, Jin-Zhu Zhao, Xihan Chen
DOI: 10.1103/9tfy-gp2t
Cited by: 1
References: 54

Abstract

The dynamical control over electronic properties represents a key area of research in condensed-matter physics. Here, we demonstrate all-optical control of carrier-strain-mediated giant enhancement of spin splitting (100 meV) in a chiral 2D perovskite. Ultrafast circular dichroism measurements and ab initio calculations reveal that anisotropic strain from confined photoexcited excitons enhances spin splitting, thereby creating a spin-dependent hot-carrier relaxation pathway and tripling hot-carrier lifetimes. Our findings establish a versatile optical strategy for coherent spin manipulation and open avenues for developing spin-based hot-carrier devices.

Fields of Study & Subjects

Multiferroics and related materials Perovskite Materials and Applications Magnetic and transport properties of perovskites and related materials

Publication details

Journal / source
Physical Review Letters
Publisher
American Physical Society (APS)
Volume
136
Issue
25
Pages
256902–256902
Publication date
22 May 2026
Language
EN