The role of α-RuCl<sub>3</sub> flat bands in G peak splitting in graphene/α-RuCl<sub>3</sub> heterostructures
Abstract α -RuCl 3 is known for its potential to realize a Kitaev quantum spin liquid by tuning the competing interactions, such as doping effects. Here, we investigated the doping effect of α -RuCl 3 /graphene heterostructures and observed a G peak splitting related to different spins, as revealed by Raman spectroscopy. The deliberate disruption of the heterostructure led to a transition from a double G peak to a single peak, underscoring the significance of interface quality. This finding was corroborated by density functional theory calculations. Additionally, we distinguished the contributions of doping and strain by employing Raman mapping, drawing comparisons to CrCl 3 /graphene heterostructures. These findings present a high-resolution technique for assessing the uniformity of similar heterostructure surfaces and investigating the behavior of distinct spins in Raman scattering influenced by magnetic proximity effects.
Authors
- Jiawei Jiang (ORCID: https://orcid.org/0000-0002-1070-3952)
- Xiaoxiang Xi (ORCID: https://orcid.org/0000-0002-8685-9267)
- Alexander S. Mayorov (ORCID: https://orcid.org/0000-0003-4558-3425)
- Jiabei Huang (ORCID: https://orcid.org/0009-0007-1683-237X)
- Hongxin Yang (ORCID: https://orcid.org/0000-0003-2627-0888)
- Takashi Taniguchi (ORCID: https://orcid.org/0000-0002-1467-3105)
- Kenji Watanabe (ORCID: https://orcid.org/0000-0003-3701-8119)
- Geliang L. Yu (ORCID: https://orcid.org/0000-0002-0169-7781)
- Renjun Du (ORCID: https://orcid.org/0009-0003-9843-2003)
- Siqi Jiang (ORCID: https://orcid.org/0000-0002-8005-2585)
- Libo Gao (ORCID: https://orcid.org/0000-0002-7822-9812)
- Lei Wang (ORCID: https://orcid.org/0000-0003-3999-6303)
- Yaqing Han (ORCID: https://orcid.org/0009-0007-2509-9990)
- Zijing Guo
- Jingkuan Xiao (ORCID: https://orcid.org/0000-0001-5277-2190)
- Jinsheng Wen (ORCID: https://orcid.org/0000-0001-5864-1466)
- Song Bao (ORCID: https://orcid.org/0000-0002-6241-7712)
- Xiaofan Cai
- Di Zhang (ORCID: https://orcid.org/0000-0002-9199-5634)
- Ping Wang (ORCID: https://orcid.org/0009-0001-2432-091X)
- Fuzhuo Lian (ORCID: https://orcid.org/0009-0004-4098-1111)
- Guodong Ma
- Xiang-Xi Cui
Publication Details
- Journal
- 2D Materials
- Published
- 2025-01-29
- DOI
- https://doi.org/10.1088/2053-1583/adafc2
- Primary Topic
- Conducting polymers and applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities