Fano interference between collective modes in cuprate high-Tc superconductors

Hao Chu (), Sergey Kovalev, Zi Xiao Wang, Lukas Schwarz, Tao Dong, Liwen Feng, Rafael Haenel, Min-Jae Kim, Parmida Shabestari, Le Phuong Hoang, Kedar Honasoge, Robert David Dawson, Daniel Putzky, Gideok Kim, Matteo Puviani, Min Chen, Nilesh Awari, Alexey N. Ponomaryov, Igor Ilyakov, Martin Bluschke, Fabio Boschini, Marta Zonno, Sergey Zhdanovich, Mengxing Na, Georg Christiani, Gennady Logvenov, David J. Jones, Andrea Damascelli, Matteo Minola, Bernhard Keimer, Dirk Manske, Nanlin Wang, Jan-Christoph Deinert and Stefan Kaiser ()
Additional contact information
Hao Chu: Max Planck Institute for Solid State Research
Sergey Kovalev: Helmholtz-Zentrum Dresden-Rossendorf
Zi Xiao Wang: Peking University
Lukas Schwarz: Max Planck Institute for Solid State Research
Tao Dong: Peking University
Liwen Feng: Max Planck Institute for Solid State Research
Rafael Haenel: Max Planck Institute for Solid State Research
Min-Jae Kim: Max Planck Institute for Solid State Research
Parmida Shabestari: Max Planck Institute for Solid State Research
Le Phuong Hoang: Max Planck Institute for Solid State Research
Kedar Honasoge: Max Planck Institute for Solid State Research
Robert David Dawson: Max Planck Institute for Solid State Research
Daniel Putzky: Max Planck Institute for Solid State Research
Gideok Kim: Max Planck Institute for Solid State Research
Matteo Puviani: Max Planck Institute for Solid State Research
Min Chen: Helmholtz-Zentrum Dresden-Rossendorf
Nilesh Awari: Helmholtz-Zentrum Dresden-Rossendorf
Alexey N. Ponomaryov: Helmholtz-Zentrum Dresden-Rossendorf
Igor Ilyakov: Helmholtz-Zentrum Dresden-Rossendorf
Martin Bluschke: Max Planck Institute for Solid State Research
Fabio Boschini: Énergie Matériaux Télécommunications Research Centre, Institut National de la Recherche Scientifique
Marta Zonno: Max Planck Institute for Solid State Research
Sergey Zhdanovich: University of British Columbia
Mengxing Na: University of British Columbia
Georg Christiani: Max Planck Institute for Solid State Research
Gennady Logvenov: Max Planck Institute for Solid State Research
David J. Jones: University of British Columbia
Andrea Damascelli: University of British Columbia
Matteo Minola: Max Planck Institute for Solid State Research
Bernhard Keimer: Max Planck Institute for Solid State Research
Dirk Manske: Max Planck Institute for Solid State Research
Nanlin Wang: Peking University
Jan-Christoph Deinert: Helmholtz-Zentrum Dresden-Rossendorf
Stefan Kaiser: Max Planck Institute for Solid State Research

Nature Communications, 2023, vol. 14, issue 1, 1-7

Abstract: Abstract Cuprate high-Tc superconductors are known for their intertwined interactions and the coexistence of competing orders. Uncovering experimental signatures of these interactions is often the first step in understanding their complex relations. A typical spectroscopic signature of the interaction between a discrete mode and a continuum of excitations is the Fano resonance/interference, characterized by the asymmetric light-scattering amplitude of the discrete mode as a function of the electromagnetic driving frequency. In this study, we report a new type of Fano resonance manifested by the nonlinear terahertz response of cuprate high-Tc superconductors, where we resolve both the amplitude and phase signatures of the Fano resonance. Our extensive hole-doping and magnetic field dependent investigation suggests that the Fano resonance may arise from an interplay between the superconducting fluctuations and the charge density wave fluctuations, prompting future studies to look more closely into their dynamical interactions.

Date: 2023
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DOI: 10.1038/s41467-023-36787-4

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