Engineering Interlayer Electron-Phonon Coupling in WS2/BN Heterostructures

Yifei Li; Xiaowei Zhang; Jinhuan Wang; Xiaoli Ma; Jin An Shi; Xiangdong Guo; Yonggang Zuo; Ruijie Li; Hao Hong; Ning Li; Kai Xu; Xinyu Huang; Huifeng Tian; Ying Yang; Zhixin Yao; Peichi Liao; Xiao Li; Junjie Guo; Yuang Huang; Peng Gao; Lifen Wang; Xiaoxia Yang; Qing Dai; Enge Wang; Kaihui Liu; Wu Zhou; Xiaohui Yu; Liangbo Liang; Ying Jiang; Xin Zheng Li; Lei Liu

doi:10.1021/acs.nanolett.1c04598

Engineering Interlayer Electron-Phonon Coupling in WS₂/BN Heterostructures

Yifei Li, Xiaowei Zhang, Jinhuan Wang, Xiaoli Ma, Jin An Shi, Xiangdong Guo, Yonggang Zuo, Ruijie Li, Hao Hong, Ning Li, Kai Xu, Xinyu Huang, Huifeng Tian, Ying Yang, Zhixin Yao, Peichi Liao, Xiao Li, Junjie Guo, Yuang Huang, Peng GaoLifen Wang, Xiaoxia Yang, Qing Dai, Enge Wang, Kaihui Liu, Wu Zhou, Xiaohui Yu, Liangbo Liang, Ying Jiang, Xin Zheng Li, Lei Liu

Nanomaterials Theory Institute

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

In van der Waals (vdW) heterostructures, the interlayer electron-phonon coupling (EPC) provides one unique channel to nonlocally engineer these elementary particles. However, limited by the stringent occurrence conditions, the efficient engineering of interlayer EPC remains elusive. Here we report a multitier engineering of interlayer EPC in WS₂/boron nitride (BN) heterostructures, including isotope enrichments of BN substrates, temperature, and high-pressure tuning. The hyperfine isotope dependence of Raman intensities was unambiguously revealed. In combination with theoretical calculations, we anticipate that WS₂/BN supercells could induce Brillouin-zone-folded phonons that contribute to the interlayer coupling, leading to a complex nature of broad Raman peaks. We further demonstrate the significance of a previously unexplored parameter, the interlayer spacing. By varying the temperature and high pressure, we effectively manipulated the strengths of EPC with on/off capabilities, indicating critical thresholds of the layer-layer spacing for activating and strengthening interlayer EPC. Our findings provide new opportunities to engineer vdW heterostructures with controlled interlayer coupling.

Original language	English
Pages (from-to)	2725-2733
Number of pages	9
Journal	Nano Letters
Volume	22
Issue number	7
DOIs	https://doi.org/10.1021/acs.nanolett.1c04598
State	Published - Apr 13 2022

Funding

This work was supported by the National Natural Science Foundation of China (Project Nos. U1932153, 11974001, 11934003, 52025023, 51991342, 11888101, 52125307, 52021006), the National Key R&D Program of China (2019YFA0307800, 2021YFA1400500), the Beijing Natural Science Foundation (Z190011), the Key Research Program of Frontier Sciences, CAS (QYZDB-SSW-JSC019), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB28000000). We acknowledge the Electron Microscopy Laboratory at Peking University for the use of an electron microscope. L.L. acknowledges work at the Center for Nanophase Materials Sciences, which is a U.S. Department of Energy Office of Science User Facility.

Keywords

electron-phonon coupling
high-pressure engineering
interlayer spacing
isotope engineering
vdW heterostructure

Access to Document

10.1021/acs.nanolett.1c04598

Cite this

@article{3b91b10e4ec9499c83d240f396089a8a,

title = "Engineering Interlayer Electron-Phonon Coupling in WS2/BN Heterostructures",

abstract = "In van der Waals (vdW) heterostructures, the interlayer electron-phonon coupling (EPC) provides one unique channel to nonlocally engineer these elementary particles. However, limited by the stringent occurrence conditions, the efficient engineering of interlayer EPC remains elusive. Here we report a multitier engineering of interlayer EPC in WS2/boron nitride (BN) heterostructures, including isotope enrichments of BN substrates, temperature, and high-pressure tuning. The hyperfine isotope dependence of Raman intensities was unambiguously revealed. In combination with theoretical calculations, we anticipate that WS2/BN supercells could induce Brillouin-zone-folded phonons that contribute to the interlayer coupling, leading to a complex nature of broad Raman peaks. We further demonstrate the significance of a previously unexplored parameter, the interlayer spacing. By varying the temperature and high pressure, we effectively manipulated the strengths of EPC with on/off capabilities, indicating critical thresholds of the layer-layer spacing for activating and strengthening interlayer EPC. Our findings provide new opportunities to engineer vdW heterostructures with controlled interlayer coupling.",

keywords = "electron-phonon coupling, high-pressure engineering, interlayer spacing, isotope engineering, vdW heterostructure",

author = "Yifei Li and Xiaowei Zhang and Jinhuan Wang and Xiaoli Ma and Shi, {Jin An} and Xiangdong Guo and Yonggang Zuo and Ruijie Li and Hao Hong and Ning Li and Kai Xu and Xinyu Huang and Huifeng Tian and Ying Yang and Zhixin Yao and Peichi Liao and Xiao Li and Junjie Guo and Yuang Huang and Peng Gao and Lifen Wang and Xiaoxia Yang and Qing Dai and Enge Wang and Kaihui Liu and Wu Zhou and Xiaohui Yu and Liangbo Liang and Ying Jiang and Li, {Xin Zheng} and Lei Liu",

year = "2022",

month = apr,

day = "13",

doi = "10.1021/acs.nanolett.1c04598",

language = "English",

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pages = "2725--2733",

journal = "Nano Letters",

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Li, Y, Zhang, X, Wang, J, Ma, X, Shi, JA, Guo, X, Zuo, Y, Li, R, Hong, H, Li, N, Xu, K, Huang, X, Tian, H, Yang, Y, Yao, Z, Liao, P, Li, X, Guo, J, Huang, Y, Gao, P, Wang, L, Yang, X, Dai, Q, Wang, E, Liu, K, Zhou, W, Yu, X, Liang, L, Jiang, Y, Li, XZ & Liu, L 2022, 'Engineering Interlayer Electron-Phonon Coupling in WS₂/BN Heterostructures', Nano Letters, vol. 22, no. 7, pp. 2725-2733. https://doi.org/10.1021/acs.nanolett.1c04598

TY - JOUR

T1 - Engineering Interlayer Electron-Phonon Coupling in WS2/BN Heterostructures

AU - Li, Yifei

AU - Zhang, Xiaowei

AU - Wang, Jinhuan

AU - Ma, Xiaoli

AU - Shi, Jin An

AU - Guo, Xiangdong

AU - Zuo, Yonggang

AU - Li, Ruijie

AU - Hong, Hao

AU - Li, Ning

AU - Xu, Kai

AU - Huang, Xinyu

AU - Tian, Huifeng

AU - Yang, Ying

AU - Yao, Zhixin

AU - Liao, Peichi

AU - Li, Xiao

AU - Guo, Junjie

AU - Huang, Yuang

AU - Gao, Peng

AU - Wang, Lifen

AU - Yang, Xiaoxia

AU - Dai, Qing

AU - Wang, Enge

AU - Liu, Kaihui

AU - Zhou, Wu

AU - Yu, Xiaohui

AU - Liang, Liangbo

AU - Jiang, Ying

AU - Li, Xin Zheng

AU - Liu, Lei

PY - 2022/4/13

Y1 - 2022/4/13

N2 - In van der Waals (vdW) heterostructures, the interlayer electron-phonon coupling (EPC) provides one unique channel to nonlocally engineer these elementary particles. However, limited by the stringent occurrence conditions, the efficient engineering of interlayer EPC remains elusive. Here we report a multitier engineering of interlayer EPC in WS2/boron nitride (BN) heterostructures, including isotope enrichments of BN substrates, temperature, and high-pressure tuning. The hyperfine isotope dependence of Raman intensities was unambiguously revealed. In combination with theoretical calculations, we anticipate that WS2/BN supercells could induce Brillouin-zone-folded phonons that contribute to the interlayer coupling, leading to a complex nature of broad Raman peaks. We further demonstrate the significance of a previously unexplored parameter, the interlayer spacing. By varying the temperature and high pressure, we effectively manipulated the strengths of EPC with on/off capabilities, indicating critical thresholds of the layer-layer spacing for activating and strengthening interlayer EPC. Our findings provide new opportunities to engineer vdW heterostructures with controlled interlayer coupling.

AB - In van der Waals (vdW) heterostructures, the interlayer electron-phonon coupling (EPC) provides one unique channel to nonlocally engineer these elementary particles. However, limited by the stringent occurrence conditions, the efficient engineering of interlayer EPC remains elusive. Here we report a multitier engineering of interlayer EPC in WS2/boron nitride (BN) heterostructures, including isotope enrichments of BN substrates, temperature, and high-pressure tuning. The hyperfine isotope dependence of Raman intensities was unambiguously revealed. In combination with theoretical calculations, we anticipate that WS2/BN supercells could induce Brillouin-zone-folded phonons that contribute to the interlayer coupling, leading to a complex nature of broad Raman peaks. We further demonstrate the significance of a previously unexplored parameter, the interlayer spacing. By varying the temperature and high pressure, we effectively manipulated the strengths of EPC with on/off capabilities, indicating critical thresholds of the layer-layer spacing for activating and strengthening interlayer EPC. Our findings provide new opportunities to engineer vdW heterostructures with controlled interlayer coupling.

KW - electron-phonon coupling

KW - high-pressure engineering

KW - interlayer spacing

KW - isotope engineering

KW - vdW heterostructure

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