Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation

doi:10.1038/s41563-020-0665-0

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	Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation
	J. Taboada-Gutierrez,G. Alvarez-Perez,J. H. Duan,W. L. Ma,K. Crowley,I. Prieto,A. Bylinkin,M. Autore,H. Volkova,K. Kimura,T. Kimura,M. H. Berger,S. J. Li,Q. L. Bao,X. P. A. Gao,I. Errea,A. Y. Nikitin,R. Hillenbrand,J. Martin-Sanchez and P. Alonso-Gonzalez
	2020
发表期刊	Nature Materials
ISSN	1476-1122
卷号	19 期号:9 页码:964-969
摘要	The spectral range of long-lived and confined phonon polaritons in a polar van der Waals crystal is shown to be tunable by intercalation of Na atoms, expanding their potential for nanophotonic applications in the mid-infrared domain. Phonon polaritons-light coupled to lattice vibrations-in polar van der Waals crystals are promising candidates for controlling the flow of energy on the nanoscale due to their strong field confinement, anisotropic propagation and ultra-long lifetime in the picosecond range(1-5). However, the lack of tunability of their narrow and material-specific spectral range-the Reststrahlen band-severely limits their technological implementation. Here, we demonstrate that intercalation of Na atoms in the van der Waals semiconductor alpha-V2O5 enables a broad spectral shift of Reststrahlen bands, and that the phonon polaritons excited show ultra-low losses (lifetime of 4 +/- 1 ps), similar to phonon polaritons in a non-intercalated crystal (lifetime of 6 +/- 1 ps). We expect our intercalation method to be applicable to other van der Waals crystals, opening the door for the use of phonon polaritons in broad spectral bands in the mid-infrared domain.
DOI	10.1038/s41563-020-0665-0
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64344
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. Taboada-Gutierrez,G. Alvarez-Perez,J. H. Duan,W. L. Ma,K. Crowley,I. Prieto,A. Bylinkin,M. Autore,H. Volkova,K. Kimura,T. Kimura,M. H. Berger,S. J. Li,Q. L. Bao,X. P. A. Gao,I. Errea,A. Y. Nikitin,R. Hillenbrand,J. Martin-Sanchez and P. Alonso-Gonzalez. Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation[J]. Nature Materials,2020,19(9):964-969.
APA	J. Taboada-Gutierrez,G. Alvarez-Perez,J. H. Duan,W. L. Ma,K. Crowley,I. Prieto,A. Bylinkin,M. Autore,H. Volkova,K. Kimura,T. Kimura,M. H. Berger,S. J. Li,Q. L. Bao,X. P. A. Gao,I. Errea,A. Y. Nikitin,R. Hillenbrand,J. Martin-Sanchez and P. Alonso-Gonzalez.(2020).Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation.Nature Materials,19(9),964-969.
MLA	J. Taboada-Gutierrez,G. Alvarez-Perez,J. H. Duan,W. L. Ma,K. Crowley,I. Prieto,A. Bylinkin,M. Autore,H. Volkova,K. Kimura,T. Kimura,M. H. Berger,S. J. Li,Q. L. Bao,X. P. A. Gao,I. Errea,A. Y. Nikitin,R. Hillenbrand,J. Martin-Sanchez and P. Alonso-Gonzalez."Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation".Nature Materials 19.9(2020):964-969.

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