Interfacial Mirror Symmetry Breaking Induced Helicity-Dependent Photocurrents in hBN/CrPS<sub>4</sub> Heterostructure
Research on quantum geometric-related effects in antiferromagnetic van der Waals heterostructures has predominantly focused on separating the contributions of Berry curvature and quantum metric through the manipulation of Parity-Time (PT) symmetry. However, the critical role of interfacial symmetry-breaking mechanisms, particularly those emerging from parity inversion symmetry manipulation, has remained underexplored. This study advances the field by investigating the hBN/CrPS<sub>4</sub> heterojunction, where the mirror symmetry at the interface is systematically controlled. A significant circular photogalvanic effect is induced through the breaking of mirror symmetry, as evidenced by helicity-dependent photocurrent measurements. Symmetry analysis reveals that the observed difference in left- and right-handed circular photocurrents originates from a Berry curvature dipole, which is directly linked to the broken mirror symmetry. Our research highlights the critical role of interface symmetry breaking in inducing quantum geometric-related effects at magnetic material interfaces and pioneers a new strategy for manipulating interface PT symmetry.
Authors
- Shuangpeng Wang (ORCID: https://orcid.org/0000-0001-8464-4994)
- Wei Chen (ORCID: https://orcid.org/0000-0002-4807-205X)
- Jinluo Cheng (ORCID: https://orcid.org/0000-0003-4875-9342)
- Baoling Huang (ORCID: https://orcid.org/0000-0001-7507-5371)
- Xueyan Cui
- Binghui Li (ORCID: https://orcid.org/0000-0002-4692-4781)
- Shanqing Li (ORCID: https://orcid.org/0000-0001-9829-5852)
- Xiuhua Xie (ORCID: https://orcid.org/0000-0002-2210-7031)
- Yuwei Shan (ORCID: https://orcid.org/0000-0001-7890-6214)
- Zhen Cheng (ORCID: https://orcid.org/0000-0001-5086-0410)
- Shichen Su (ORCID: https://orcid.org/0000-0001-5786-8933)
- Jishan Liu
- Hongyu Chen (ORCID: https://orcid.org/0000-0002-3926-1959)
Institutions
- South China Normal University (CN)
- Chinese Academy of Sciences (CN)
- University of Macau (MO)
- Changchun Institute of Optics, Fine Mechanics and Physics (CN)
- Shanghai Advanced Research Institute (CN)
- Institute of Microelectronics (CN)
- Lumtec (Taiwan) (TW)
- University of Chinese Academy of Sciences (CN)
- Shanghai Synchrotron Radiation Facility
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2025-07-21
- DOI
- https://doi.org/10.1021/acsami.5c08396
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00