Portal de Periódicos da CAPES

Fano interference between collective modes in cuprate high-Tc superconductors

2023; Nature Portfolio; Volume: 14; Issue: 1 Linguagem: Inglês

10.1038/s41467-023-36787-4

2041-1723

Hao Chu, Sergey Kovalev, Zi Xiao Wang, Lukas Schwarz, Tao Dong, Liwen Feng, Rafael Haenel, Minjae Kim, Parmida Shabestari, Le Phuong Hoang, Kedar Honasoge, Robert David Dawson, Daniel Putzky, Gideok Kim, Matteo Puviani, Min Chen, Nilesh Awari, Alexey Ponomaryov, Igor Ilyakov, Martin Bluschke, Fabio Boschini, Marta Zonno, Sergey Zhdanovich, MengXing Na, G. Christiani, Г. Логвенов, David J. Jones, A. Damascelli, M. Minola, B. Keimer, Dirk Manske, Nanlin Wang, Jan‐Christoph Deinert, S. Kaiser,

Quantum and electron transport phenomena

Abstract Cuprate high- T c 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- T c 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.