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The heterointerface created by stacking two nonpolar materials with different inversion and rotational symmetries has attracted much attention because of its unique nonlinear photovoltaic properties caused by spontaneous polarization from viewpoints of fundamental physics and potential applications, such as next-generation solar cells. The topological nonlinear photocurrent properties based on broken symmetries have been revealed from both experimental and theoretical approaches; however, the intriguing topological nonlinear photocurrent in systems with broken time-reversal (T-) symmetry in addition to spatial inversion (P-) symmetry has not been fully explored. Herein, we experimentally investigate the nonlinear photovoltaic responses in a van der Waals heterostructure consisting of a monolayer semiconductor and layered magnetic materials of MoS2/CrPS4 with a P- and T-symmetry broken system. As the shift current occurs along the direction of parallel to P-symmetry broken axis at the interface of MoS2/CrPS4, a spontaneous photocurrent is clearly observed. Moreover, we demonstrate that the spontaneous photocurrent drastically changes according to the magnetic phase of CrPS4 depending on the temperature and external magnetic field. The magnetic phase-dependent spontaneous nonlinear photocurrent provides an emerging platform for studying the nonlinear topological photoresponses in P- and T-symmetry broken systems and the potential application of magnetic controllable photovoltaic devices.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: nonlinear photovoltaic effect
, MoS2/CrPS4
, symmetry breaking


刊行年月日: 2025-05-24

出版者: Springer Science and Business Media LLC

掲載誌:

• Nature Communications (ISSN: 20411723) vol. 16 issue. 1 4827

研究助成金:

• MEXT | Japan Society for the Promotion of Science JP20H05664, JP21H05232, JP21H05235, JP21H05233, JP22K18986 and JP23H05469
• MEXT | Japan Society for the Promotion of Science JP23KJ1381
• MEXT | Japan Society for the Promotion of Science JP21H01012
• MEXT | Japan Society for the Promotion of Science JP21H05233
• MEXT | JST | Core Research for Evolutional Science and Technology JPMJCR24A5
• MEXT | Japan Science and Technology Agency JPMJFR213K
• Ministry of Education, Culture, Sports, Science and Technology JPMXP0112101001

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1038/s41467-025-58918-9

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更新時刻: 2026-04-03 16:03:47 +0900

MDRでの公開時刻: 2026-04-04 08:24:46 +0900