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Title: Strong Metasurface–Josephson Plasma Resonance Coupling in Superconducting La 2− x Sr x CuO 4

Abstract

Abstract Terahertz spectroscopy of the c ‐axis Josephson plasma resonance (JPR) in high‐temperature cuprates is a powerful probe of superconductivity, providing a route to couple to and interact with the condensate. Electromagnetic coupling between metasurface arrays of split ring resonators (SRRs) and the JPR of a La 2− x Sr x CuO 4 single crystal ( T c = 32 K) is investigated. The metasurface resonance frequency (ω MM ), determined by the SRR geometry, is swept through the JPR frequency (ω JPR = 1.53 THz) using a series of interchangeable tapes applied to the same single crystal. Terahertz reflectivity measurements on the resulting hybrid superconducting metamaterials (HSMMs) reveal anticrossing behavior characteristic of strong coupling. The experimental results, validated with numerical simulations, indicate a normalized Rabi frequency of Ω R = 0.29. Further, it is shown that HSMMs with ω MM > ω JPR provide a route to couple to hyperbolic waveguide modes in c ‐axis cuprate samples. This work informs future possibilities for optimizing the coupling strength of HSMMs and investigating nonlinear superconductivity under high field terahertz excitation.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2];  [3]; ORCiD logo [4]; ORCiD logo [1];  [2];  [5]; ORCiD logo [1]
  1. Department of Physics University of California San Diego La Jolla CA 92093 USA
  2. Department of Mechanical Engineering Boston University Boston MA 02215 USA
  3. Department of Physics Kyung Hee University Seoul 02447 Republic of Korea
  4. Department of Mechanical Engineering Columbia University New York NY 10027 USA
  5. Department of Physics Columbia University New York NY 10027 USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1558129
Grant/Contract Number:  
DE‐SC0018218
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Advanced Optical Materials
Additional Journal Information:
Journal Name: Advanced Optical Materials Journal Volume: 7 Journal Issue: 21; Journal ID: ISSN 2195-1071
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
Germany
Language:
English

Citation Formats

Schalch, Jacob S., Post, Kirk, Duan, Guangwu, Zhao, Xiaoguang, Kim, Young Duck, Hone, James, Fogler, Michael M., Zhang, Xin, Basov, Dmitri N., and Averitt, Richard D. Strong Metasurface–Josephson Plasma Resonance Coupling in Superconducting La 2− x Sr x CuO 4. Germany: N. p., 2019. Web. doi:10.1002/adom.201900712.
Schalch, Jacob S., Post, Kirk, Duan, Guangwu, Zhao, Xiaoguang, Kim, Young Duck, Hone, James, Fogler, Michael M., Zhang, Xin, Basov, Dmitri N., & Averitt, Richard D. Strong Metasurface–Josephson Plasma Resonance Coupling in Superconducting La 2− x Sr x CuO 4. Germany. https://doi.org/10.1002/adom.201900712
Schalch, Jacob S., Post, Kirk, Duan, Guangwu, Zhao, Xiaoguang, Kim, Young Duck, Hone, James, Fogler, Michael M., Zhang, Xin, Basov, Dmitri N., and Averitt, Richard D. Wed . "Strong Metasurface–Josephson Plasma Resonance Coupling in Superconducting La 2− x Sr x CuO 4". Germany. https://doi.org/10.1002/adom.201900712.
@article{osti_1558129,
title = {Strong Metasurface–Josephson Plasma Resonance Coupling in Superconducting La 2− x Sr x CuO 4},
author = {Schalch, Jacob S. and Post, Kirk and Duan, Guangwu and Zhao, Xiaoguang and Kim, Young Duck and Hone, James and Fogler, Michael M. and Zhang, Xin and Basov, Dmitri N. and Averitt, Richard D.},
abstractNote = {Abstract Terahertz spectroscopy of the c ‐axis Josephson plasma resonance (JPR) in high‐temperature cuprates is a powerful probe of superconductivity, providing a route to couple to and interact with the condensate. Electromagnetic coupling between metasurface arrays of split ring resonators (SRRs) and the JPR of a La 2− x Sr x CuO 4 single crystal ( T c = 32 K) is investigated. The metasurface resonance frequency (ω MM ), determined by the SRR geometry, is swept through the JPR frequency (ω JPR = 1.53 THz) using a series of interchangeable tapes applied to the same single crystal. Terahertz reflectivity measurements on the resulting hybrid superconducting metamaterials (HSMMs) reveal anticrossing behavior characteristic of strong coupling. The experimental results, validated with numerical simulations, indicate a normalized Rabi frequency of Ω R = 0.29. Further, it is shown that HSMMs with ω MM > ω JPR provide a route to couple to hyperbolic waveguide modes in c ‐axis cuprate samples. This work informs future possibilities for optimizing the coupling strength of HSMMs and investigating nonlinear superconductivity under high field terahertz excitation.},
doi = {10.1002/adom.201900712},
journal = {Advanced Optical Materials},
number = 21,
volume = 7,
place = {Germany},
year = {Wed Aug 21 00:00:00 EDT 2019},
month = {Wed Aug 21 00:00:00 EDT 2019}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1002/adom.201900712

Citation Metrics:
Cited by: 7 works
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