# Engineering anisotropic electrodynamics at the graphene/CrSBr interface https://mdr.nims.go.jp/datasets/8b6410a7-7267-41a9-897b-07535ff71e70 ## File - [s41467-025-56804-y.pdf](https://mdr.nims.go.jp/filesets/f0602eb2-7379-496f-ba8e-ca599cfaa25b/download) ([Detail](https://mdr.nims.go.jp/filesets/f0602eb2-7379-496f-ba8e-ca599cfaa25b.md)) ## Id 8b6410a7-7267-41a9-897b-07535ff71e70 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2026-02-15T02:33:11.412764Z ## Updated at 2026-02-17T23:30:11.199153Z ## Published at 2026-02-17T08:57:18.026054Z ## Doi ## First published url https://doi.org/10.1038/s41467-025-56804-y ## Date published 2025-02-21 ## Recorded date published ## Resource type journal_article ## Manuscript type vor ## Collection ## Title - title: Engineering anisotropic electrodynamics at the graphene/CrSBr interface title_type: original lang: en ## Description - description: Graphene is a privileged 2D platform for hosting confined light-matter excitations known as surface plasmon-polaritons (SPPs), as it possesses low intrinsic losses and a high degree of optical confinement. However, the isotropic nature of graphene limits its ability to guide and focus SPPs, making it less suitable than anisotropic elliptical and hyperbolic materials for polaritonic lensing and canalization. Here, we present graphene/CrSBr as an engineered 2D interface that hosts highly anisotropic SPP propagation across mid-infrared and terahertz energies. Using scanning tunneling microscopy, scattering-type scanning near-field optical microscopy, and first-principles calculations, we demonstrate mutual doping in excess of 10^13 cm–2 holes/electrons between the interfacial layers of graphene/CrSBr. SPPs in graphene activated by charge transfer interact with charge-induced electronic anisotropy in the interfacial doped CrSBr, leading to preferential SPP propagation along the quasi-1D chains that compose each CrSBr layer. This multifaceted proximity effect both creates SPPs and endows them with anisotropic propagation lengths that differ by an order-of-magnitude between the in-plane crystallographic axes of CrSBr. description_type: abstract lang: und ## Creator - name: Daniel J. Rizzo role: author - name: Eric Seewald role: author - name: Fangzhou Zhao role: author - name: Jordan Cox role: author - name: Kaichen Xie role: author - name: Rocco A. Vitalone role: author - name: Francesco L. Ruta role: author - name: Daniel G. Chica role: author - name: Yinming Shao role: author - name: Sara Shabani role: author - name: Evan J. Telford role: author - name: Matthew C. Strasbourg role: author - name: Thomas P. Darlington role: author - name: Suheng Xu role: author - name: Siyuan Qiu role: author - name: Aravind Devarakonda role: author - name: Takashi Taniguchi role: author orcid: https://orcid.org/0000-0002-1467-3105 organization: National Institute for Materials Science - name: Kenji Watanabe role: author orcid: https://orcid.org/0000-0003-3701-8119 organization: National Institute for Materials Science - name: Xiaoyang Zhu role: author - name: P. James Schuck role: author - name: Cory R. Dean role: author - name: Xavier Roy role: author - name: Andrew J. Millis role: author - name: Ting Cao role: author - name: Angel Rubio role: author - name: Abhay N. Pasupathy role: author - name: D. N. Basov role: author ## Contact agent ## Publisher organization: Springer Science and Business Media LLC ## Managing organization ## Keyword - subject: 'graphene/CrSBr interface
 ' schema: not_defined - subject: anisotropic electrodynamics schema: not_defined - subject: 'surface plasmon polaritons (SPPs)
 ' schema: not_defined ## Rights - identifier: https://creativecommons.org/licenses/by/4.0/ date_licensed: 2025-02-21 ## Other identifier(s) ## Data origin - data_origin_type: other ## Embargo ## Journal - title: Nature Communications issn: '20411723' volume: '16' article_number: '1853' ## Conference ## Related item ## Funding ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: f0602eb2-7379-496f-ba8e-ca599cfaa25b filename: s41467-025-56804-y.pdf content_type: application/pdf size: 2925415 md5: '068edfda10beaeb10c88dbe6dcafdfeb' ## Thumbnail fileset_id: f0602eb2-7379-496f-ba8e-ca599cfaa25b filename: s41467-025-56804-y.pdf