IOP Publishing
2D Materials
,  volume 12 ,  issue 2 ,  pages 25015

The Role of α-RuCl3 Flat Bands in G Peak Splitting in Graphene/α-RuCl3 Heterostructures

Xiaofan Cai 1
, 
Renjun Du 1
, 
Song Bao 1
, 
Zijing Guo 1
, 
Jiabei Huang 1
, 
Jingkuan Xiao 1
, 
Siqi Jiang 1
, 
Guodong Ma 1
, 
Di Zhang 1
, 
Xiang Cui 1
, 
Kenji Watanabe 2
, 
Takashi Taniguchi 3
, 
Jinsheng Wen 1, 4
, 
Xiaoxiang Xi 1, 4
, 
Paul K. Chu 1, 4
, 
Libo Gao 1, 4
, 
Vasily Stolyarov 5
, 
Alexander S Mayorov 1, 4
, 
Hongxin Yang 6
, 
Lei Wang 1, 4, 7
, 
Geliang L. Yu 1, 4, 7
1
 
2
 
3
 
4
 
5
 
6
 
7
 
Jiangsu Physical Research Center, Nanjing 210093, People’s Republic of China | 
Publication type: Journal Article
Publication date: 2025-02-06
IOP Publishing
scimago Q1
wos Q2
SJR: 1.338
CiteScore: 9.3
Impact factor: 4.3
ISSN: 20531583
Abstract

α-RuCl3 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-RuCl3/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 CrCl3/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.

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Cai X. et al. The Role of α-RuCl3 Flat Bands in G Peak Splitting in Graphene/α-RuCl3 Heterostructures // 2D Materials. 2025. Vol. 12. No. 2. p. 25015.
GOST all authors (up to 50) Copy
Cai X. et al. The Role of α-RuCl3 Flat Bands in G Peak Splitting in Graphene/α-RuCl3 Heterostructures // 2D Materials. 2025. Vol. 12. No. 2. p. 25015.
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TY - JOUR
DO - 10.1088/2053-1583/adafc2
UR - https://iopscience.iop.org/article/10.1088/2053-1583/adafc2
TI - The Role of α-RuCl3 Flat Bands in G Peak Splitting in Graphene/α-RuCl3 Heterostructures
T2 - 2D Materials
AU - Cai, Xiaofan
AU - Du, Renjun
AU - Bao, Song
AU - Guo, Zijing
AU - Huang, Jiabei
AU - Xiao, Jingkuan
AU - Jiang, Siqi
AU - Ma, Guodong
AU - Zhang, Di
AU - Cui, Xiang
AU - Watanabe, Kenji
AU - Taniguchi, Takashi
AU - Wen, Jinsheng
AU - Xi, Xiaoxiang
AU - Chu, Paul K.
AU - Gao, Libo
AU - Stolyarov, Vasily
AU - Mayorov, Alexander S
AU - Yang, Hongxin
AU - Wang, Lei
AU - Yu, Geliang L.
PY - 2025
DA - 2025/02/06
PB - IOP Publishing
SP - 25015
IS - 2
VL - 12
SN - 2053-1583
ER -
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@article{2025_Cai,
author = {Xiaofan Cai and Renjun Du and Song Bao and Zijing Guo and Jiabei Huang and Jingkuan Xiao and Siqi Jiang and Guodong Ma and Di Zhang and Xiang Cui and Kenji Watanabe and Takashi Taniguchi and Jinsheng Wen and Xiaoxiang Xi and Paul K. Chu and Libo Gao and Vasily Stolyarov and Alexander S Mayorov and Hongxin Yang and Lei Wang and Geliang L. Yu and others},
title = {The Role of α-RuCl3 Flat Bands in G Peak Splitting in Graphene/α-RuCl3 Heterostructures},
journal = {2D Materials},
year = {2025},
volume = {12},
publisher = {IOP Publishing},
month = {feb},
url = {https://iopscience.iop.org/article/10.1088/2053-1583/adafc2},
number = {2},
pages = {25015},
doi = {10.1088/2053-1583/adafc2}
}
MLA
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Cai, Xiaofan, et al. “The Role of α-RuCl3 Flat Bands in G Peak Splitting in Graphene/α-RuCl3 Heterostructures.” 2D Materials, vol. 12, no. 2, Feb. 2025, p. 25015. https://iopscience.iop.org/article/10.1088/2053-1583/adafc2.