Magnetic‐Electrical Synergetic Control of Non‐Volatile States in Bilayer Graphene‐CrOCl Heterostructures
Anti-ferromagnetic insulator chromium oxychloride (CrOCl) has shown peculiar charge transfer and correlation-enhanced emerging properties when interfaced with other van der Waals conductive channels. However, the influence of its spin states to the channel material remains largely unknown. Here, this issue is addressed by directly measuring the density of states in bilayer graphene (BLG) interfaced with CrOCl via a high-precision capacitance measurement technique and a surprising hysteretic behavior in the charging states of the heterostructure is observed. Such hysteretic behavior depends only on the history of magnetization, but not on the history of electrical gating; it can also be turned off electrically, providing a synergetic control of these non-volatile states. First-principles calculations attribute this observation to magnetic field-controlled charge transfer between BLG and CrOCl during the phase transition of CrOCl from antiferromagnetic (AFM) to ferrimagnetic-like (FiM) states. This magnetic-electrical synergetic control mechanism broadens the scope of proximity effects and opens new possibilities for the design of advanced 2D heterostructures and devices.
Authors
- Pingfan Gu (ORCID: https://orcid.org/0000-0002-4203-794X)
- Tingting Hao (ORCID: https://orcid.org/0000-0001-6176-6665)
- Xiaoming Xie (ORCID: https://orcid.org/0000-0002-9891-6927)
- Takashi Taniguchi (ORCID: https://orcid.org/0000-0003-0017-7669)
- Shimin Cao (ORCID: https://orcid.org/0000-0001-9245-586X)
- Kenji Watanabe (ORCID: https://orcid.org/0000-0003-3701-8119)
- Nan Ma (ORCID: https://orcid.org/0000-0003-4006-1003)
- Jianhao Chen (ORCID: https://orcid.org/0000-0002-9485-1759)
- Zheng Han (ORCID: https://orcid.org/0000-0001-5721-6206)
- Runjie Zheng
- Cong Wang (ORCID: https://orcid.org/0000-0003-2880-2120)
- Yuxin Zhang (ORCID: https://orcid.org/0000-0003-4698-5645)
- Yu Ye (ORCID: https://orcid.org/0000-0001-6046-063X)
- Yaning Wang (ORCID: https://orcid.org/0000-0001-8982-5604)
- Wei Ji (ORCID: https://orcid.org/0000-0001-5249-6624)
- Yang Liu (ORCID: https://orcid.org/0009-0003-7672-2931)
- Yuanjun Song (ORCID: https://orcid.org/0000-0002-9648-8519)
- Mantang Chen (ORCID: https://orcid.org/0000-0002-7777-128X)
- Ya Feng
Institutions
- Shanxi University (CN)
- Chinese Academy of Sciences (CN)
- Peking University (CN)
- National Institute for Materials Science (JP)
- Fudan University (CN)
- Hefei University (CN)
- Collaborative Innovation Center of Quantum Matter (CN)
- Beijing Academy of Quantum Information Sciences (CN)
- State Key Laboratory of Quantum Optics and Quantum Optics Devices
- Renmin University of China (CN)
Publication Details
- Journal
- Advanced Materials
- Published
- 2024-11-28
- DOI
- https://doi.org/10.1002/adma.202411300
- Citations
- 9
- Primary Topic
- Graphene research and applications
- Type
- article
- Field-Weighted Citation Impact
- 1.05
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities