Quench-drive spectroscopy of cuprates

Abstract

Cuprates are d-wave superconductors which exhibit a rich phase diagram: they are characterized by superconducting fluctuations even above the critical temperature, and thermal disorder can reduce or suppress the phase coherence. However, photoexcitation can have the opposite effect: recent experiments have shown an increasing phase coherence in optimally doped BSCCO with mid-infrared driving. Time-resolved terahertz spectroscopies are powerful techniques to excite and probe non-equilibrium states of superconductors, directly addressing collective modes, such as amplitude (Higgs) oscillations. In this work, we calculate the full time evolution of the current generated by a cuprate with a quench-drive spectroscopy setup. Analyzing the response in Fourier space with respect to both the real time and the quench-drive delay time, we look for the signature of a transient modulation of higher harmonics as well as the Higgs mode, in order to characterize the ground state phase. In particular, this approach can provide a smoking gun for induced or increased phase coherence when applied to the pseudogap phase. These results can pave the way for future experimental schemes to characterize and study superconductors alongside incoherent phases and phase transitions, including induced and transient superconductivity.

arXiv comment13 pages, 8 figures

References in corpus (17)

• Inelastic Light Scattering From Correlated Electrons
• Diamagnetism and Cooper pairing above $T_c$ in cuprates
• Higgs Mode in Superconductors
• Theory of Anderson pseudospin resonance with Higgs mode in superconductors
• Two-dimensional terahertz magnetic resonance spectroscopy of collective spin waves
• Non-linear optical effects and third-harmonic generation in superconductors: Cooper-pairs vs Higgs mode contribution
• Higgs mode in the d-wave superconductor Bi2Sr2CaCu2O8+x driven by an intense terahertz pulse
• Resolving continua of fractional excitations by spinon echo in THz 2D coherent spectroscopy
• Non-equilibrium phenomena in superconductors probed by femtosecond time-domain spectroscopy
• Theory of driven Higgs oscillations and third-harmonic generation in unconventional superconductors
• Non-linear Terahertz Driving of Plasma Waves in Layered Cuprates
• Signatures of superconductivity and pseudogap formation in non-equilibrium nodal quasiparticles revealed by ultrafast angle-resolved photoemission
• Signatures of enhanced superconducting phase coherence through MID-IR excitation in optimally doped Y-Bi2212
• Transient Higgs oscillations and high-order nonlinear light-Higgs coupling in terahertz-wave drivenNbN superconductor
• Ultrafast spectroscopy of quasiparticle dynamics in cuprate superconductors
• Clocking the Onset of Bilayer Coherence in a High-${\mathrm{T}}_{\mathrm{C}}$ Cuprate
• Anisotropic Time-Domain Electronic Response in Cuprates

Cited by in corpus (4)

• Quantum Coherence Tomography of Lightwave Controlled Superconductivity
• Principles of 2D terahertz spectroscopy of collective excitations: the case of Josephson plasmons in layered superconductors
• Quench-drive spectroscopy and high-harmonic generation in BCS superconductors
• Theory of symmetry-resolved quench-drive spectroscopy: Nonlinear response of phase-fluctuating superconductors