Searching for Circular Photo Galvanic Effect in Oxyhalide Perovskite Bi4NbO8Cl
Abstract
The ability to reconfigure spin structure and spin‐photon interactions by an external electric field is a prerequisite for seamless integration of opto‐spintronics into modern electronics. In this study, the use of electric field on the tuning of circular photo galvanic effect in a quasi‐2D oxyhalide perovskite Bi4NbO8Cl is reported. The electrical transport measurements are applied to study the switching characteristics of the microsheet devices. The electric field is used to tune the nanoscale devices and an optical orientation approach is applied to understand the field‐tuned spin‐polarized band structures. It is found that the circular photogalvanic current can be erased and re‐created by poling, indicating the electric‐field‐based control over spin structure. The study enriches the basic understanding of the symmetry‐regulated optoelectronic response in ferroelectrics with spin‐orbit coupling.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 13, 2022
- Source ID
- 10.1002/adfm.202206343
Entities
People
- Baiwei Wang
- Daniel Gall
- Esther A. Wertz
- Gwo‐ching Wang
- Hanyu Zhu
- Jian Shi
- Jie Jiang
- Jisen Tian
- Lei Gao
- Lifu Zhang
- Ru Jia
- Rui Xu
- Ryan Hawks
- Sijie Ma
- Vei Wang
- Xinchun Chen
- Yang Hu
- Yi‐yang Sun
- Yu Xiang
- Yuan Ma
- Yuwei Guo
- Zhenhan Huang
- Zhizhong Chen
Organizations
- Air Force Office of Scientific Research
- National Science Foundation
- Rensselaer Polytechnic Institute
- Rice University
- Shanghai Institute of Ceramics
- Tsinghua University
- University of Science and Technology Beijing