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	Quantum Phase Transitions of Interlayer Excitons in van der Waals Heterostructures
	J. P. Deng, Z. W. Wang, Y. Cui, Y. Y. Liu, X. J. Ma, S. J. Li and Z. Q. Li
刊名	Physica Status Solidi-Rapid Research Letters
	2023
页码	7
ISSN号	1862-6254
DOI	10.1002/pssr.202300242
英文摘要	Quantum phases of interlayer excitons (IXs) in van der Waals heterostructures (vdWHs) play a critical role in determining the fundamental properties of these structures. However, quantum phase transitions between free state and self-trapped state of IXs remain poorly understood. Herein, the physical pictures for quantum transitions of IXs stemming from the IX-interface optical phonon coupling are explored. The critical boundaries of the phase transitions among free, light, and heavy self-trapped states are given and the dependence of boundaries on the structural parameters of vdWHs is discussed, implying the controllability of these IXs states in vdWHs. In order to distinguish different quantum phases further, a strategy that multiphonon Raman scattering mediated by these exciton states is proposed. It is found find that multiphonon overtones appear in Raman spectra for the self-trapped states and not for free states, which clarifies the long-standing puzzle that free exciton can induce multiphonon Raman processes. The results lay the significant theoretical foundation for understanding the quantum phases of IX and their modulation in vdWHs. This study presents the physical pictures for quantum transitions among three types of interlayer exciton states in van der Waals heterostructures. Furthermore, a practical strategy that multiphonon Raman scattering mediated by these exciton states is proposed to distinguish three exciton phases.image (c) 2023 WILEY-VCH GmbH
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/67429]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	J. P. Deng, Z. W. Wang, Y. Cui, Y. Y. Liu, X. J. Ma, S. J. Li and Z. Q. Li. Quantum Phase Transitions of Interlayer Excitons in van der Waals Heterostructures[J]. Physica Status Solidi-Rapid Research Letters,2023:7.
APA	J. P. Deng, Z. W. Wang, Y. Cui, Y. Y. Liu, X. J. Ma, S. J. Li and Z. Q. Li.(2023).Quantum Phase Transitions of Interlayer Excitons in van der Waals Heterostructures.Physica Status Solidi-Rapid Research Letters,7.
MLA	J. P. Deng, Z. W. Wang, Y. Cui, Y. Y. Liu, X. J. Ma, S. J. Li and Z. Q. Li."Quantum Phase Transitions of Interlayer Excitons in van der Waals Heterostructures".Physica Status Solidi-Rapid Research Letters (2023):7.

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