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Title: Probing Polaritons in 2D Materials with Synchrotron Infrared Nanospectroscopy

Abstract

Abstract Polaritons, which are quasiparticles composed of a photon coupled to an electric or magnetic dipole, are a major focus in nanophotonic research of van der Waals (vdW) crystals and their derived 2D materials. For the variety of existing vdW materials, polaritons can be active in a broad range of the electromagnetic spectrum (meVs to eVs) and exhibit momenta much higher than the corresponding free‐space radiation. Hence, the use of high momentum broadband sources or probes is imperative to excite those quasiparticles and measure the frequency‐momentum dispersion relations, which provide insights into polariton dynamics. Synchrotron infrared nanospectroscopy (SINS) is a technique that combines the nanoscale spatial resolution of scattering‐type scanning near‐field optical microscopy with ultrabroadband synchrotron infrared radiation, making it highly suitable to probe and characterize a variety of vdW polaritons. Here, the advances enabled by SINS on the study of key photonic attributes of far‐ and mid‐infrared plasmon‐ and phonon‐polaritons in vdW and 2D crystals are reviewed. In that context the SINS technique is comprehensively described and it is demonstrated how fundamental polaritonic properties are retrieved for a range of atomically thin systems including hBN, MoS 2 , graphene and 2D heterostructures.

Authors:
 [1];  [2];  [3];  [3];  [4];  [1]; ORCiD logo [1]
+ Show Author Affiliations
  1. Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP (Brazil). Brazilian Synchrotron Light Laboratory (LNLS)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  3. Mackenzie Presbyterian Univ., São Paulo (Brazil). MackGraphe – Graphene and Nanomaterials Research Center
  4. Physikalisch‐Technische Bundesanstalt (PTB), Berlin (Germany)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); CNPq; São Paulo Research Foundation
OSTI Identifier:
1775370
Alternate Identifier(s):
OSTI ID: 1577874
Grant/Contract Number:  
AC02-05CH11231; 2012/50259‐8; 2015/11779‐4; 2018/07276‐5; 311564/2018‐6
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Optical Materials
Additional Journal Information:
Journal Volume: 8; Journal Issue: 5; Journal ID: ISSN 2195-1071
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 2D materials; far-infrared SINS; graphene; hexagonal boron nitride; infrared synchrotron nanospectroscopy; polaritons; s-SNOM

Citation Formats

Barcelos, Ingrid D., Bechtel, Hans A., de Matos, Christiano S., Bahamon, Dario A., Kaestner, Bernd, Maia, Francisco B., and Freitas, Raul O. Probing Polaritons in 2D Materials with Synchrotron Infrared Nanospectroscopy. United States: N. p., 2019. Web. doi:10.1002/adom.201901091.
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Barcelos, Ingrid D., Bechtel, Hans A., de Matos, Christiano S., Bahamon, Dario A., Kaestner, Bernd, Maia, Francisco B., & Freitas, Raul O. Probing Polaritons in 2D Materials with Synchrotron Infrared Nanospectroscopy. United States. https://doi.org/10.1002/adom.201901091
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Barcelos, Ingrid D., Bechtel, Hans A., de Matos, Christiano S., Bahamon, Dario A., Kaestner, Bernd, Maia, Francisco B., and Freitas, Raul O. Mon . "Probing Polaritons in 2D Materials with Synchrotron Infrared Nanospectroscopy". United States. https://doi.org/10.1002/adom.201901091. https://www.osti.gov/servlets/purl/1775370.
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@article{osti_1775370,
title = {Probing Polaritons in 2D Materials with Synchrotron Infrared Nanospectroscopy},
author = {Barcelos, Ingrid D. and Bechtel, Hans A. and de Matos, Christiano S. and Bahamon, Dario A. and Kaestner, Bernd and Maia, Francisco B. and Freitas, Raul O.},
abstractNote = {Abstract Polaritons, which are quasiparticles composed of a photon coupled to an electric or magnetic dipole, are a major focus in nanophotonic research of van der Waals (vdW) crystals and their derived 2D materials. For the variety of existing vdW materials, polaritons can be active in a broad range of the electromagnetic spectrum (meVs to eVs) and exhibit momenta much higher than the corresponding free‐space radiation. Hence, the use of high momentum broadband sources or probes is imperative to excite those quasiparticles and measure the frequency‐momentum dispersion relations, which provide insights into polariton dynamics. Synchrotron infrared nanospectroscopy (SINS) is a technique that combines the nanoscale spatial resolution of scattering‐type scanning near‐field optical microscopy with ultrabroadband synchrotron infrared radiation, making it highly suitable to probe and characterize a variety of vdW polaritons. Here, the advances enabled by SINS on the study of key photonic attributes of far‐ and mid‐infrared plasmon‐ and phonon‐polaritons in vdW and 2D crystals are reviewed. In that context the SINS technique is comprehensively described and it is demonstrated how fundamental polaritonic properties are retrieved for a range of atomically thin systems including hBN, MoS 2 , graphene and 2D heterostructures.},
doi = {10.1002/adom.201901091},
journal = {Advanced Optical Materials},
number = 5,
volume = 8,
place = {United States},
year = {Mon Dec 09 00:00:00 EST 2019},
month = {Mon Dec 09 00:00:00 EST 2019}
}
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