Nonlinear response of diffusive superconductors to ac electromagnetic fields

P Derendorf, AF Volkov, IM Eremin - Physical Review B, 2024 - APS
Motivated by the recent experimental progress in studying conventional and unconventional
superconductors in a pump-probe setup, we perform a comprehensive theoretical analysis …

Linear and nonlinear current response in disordered -wave superconductors

L Benfatto, C Castellani, G Seibold - Physical Review B, 2023 - APS
We present a detailed theoretical investigation of the linear and nonlinear optical response
in a model system for a disordered d-wave superconductor. By evaluating the quasiparticle …

Principles of two-dimensional terahertz spectroscopy of collective excitations: The case of Josephson plasmons in layered superconductors

A Gómez Salvador, PE Dolgirev, MH Michael, A Liu… - Physical Review B, 2024 - APS
Two-dimensional terahertz spectroscopy (2DTS), a terahertz analog of nuclear magnetic
resonance, is a new technique poised to address many open questions in complex …

Principles of 2D terahertz spectroscopy of collective excitations: the case of Josephson plasmons in layered superconductors

AG Salvador, PE Dolgirev, MH Michael, A Liu… - arXiv preprint arXiv …, 2024 - arxiv.org
Two-dimensional terahertz spectroscopy (2DTS), a terahertz analogue of nuclear magnetic
resonance, is a new technique poised to address many open questions in complex …

Dynamical interplay between superconductivity and pseudogap in cuprates as revealed by terahertz third-harmonic generation spectroscopy

J Yuan, L Shi, L Yue, B Li, Z Wang, S Xu, T Xu… - Science …, 2024 - science.org
We report on nonlinear terahertz third-harmonic generation (THG) measurements on
YBa2Cu3O6+ x thin films. Different from conventional superconductors, the THG signal …

Excitation-dependent features and artifacts in 2-D terahertz spectroscopy

A Liu, A Disa - Optics Express, 2024 - opg.optica.org
Recently, two-dimensional terahertz spectroscopy (2DTS) has attracted increasing attention
for studying complex solids. A number of recent studies have applied 2DTS either with long …

Probing inhomogeneous cuprate superconductivity by terahertz Josephson echo spectroscopy

A Liu, D Pavicevic, MH Michael, AG Salvador… - arXiv preprint arXiv …, 2023 - arxiv.org
Inhomogeneities play a crucial role in determining the properties of quantum materials. Yet
methods that can measure these inhomogeneities are few, and apply to only a fraction of the …

Theory of symmetry-resolved quench-drive spectroscopy: Nonlinear response of phase-fluctuating superconductors

M Puviani - Physical Review B, 2024 - APS
Recent experiments on cuprates have shown the possibility of opening a gap above the
superconducting critical temperature, in the so-called phase-fluctuating state, by enhancing …

On‐Demand Generation and Control of Giant Terahertz Nonlinearity with Metasurfaces

C Wang, Y Wen, Y Tan, S Zhao, K Yu, J Sun… - Laser & Photonics … - Wiley Online Library
Simultaneous control of the optical linearity and nonlinearity of the materials plays key roles
in next‐generation electronics and optics as it offers the potential of manipulating the …