Optical conductivity and damping of plasmons due to electron-electron interaction
We revisit the issue of plasmon damping due to electron-electron interaction. The plasmon
linewidth can be related to the imaginary part of the charge susceptibility or, equivalently, to …
linewidth can be related to the imaginary part of the charge susceptibility or, equivalently, to …
Charge-density response in layered metals: Retardation effects, generalized plasma waves, and their spectroscopic signatures
Transverse plasma polaritons and longitudinal plasmons describe the propagation of light-
matter modes in an isotropic metal. However, in a layered metal the anisotropy of the bare …
matter modes in an isotropic metal. However, in a layered metal the anisotropy of the bare …
Consistency between reflection momentum-resolved electron energy loss spectroscopy and optical spectroscopy measurements of the long-wavelength density …
The density fluctuation spectrum captures many fundamental properties of strange metals.
Using momentum-resolved electron energy loss spectroscopy (M-EELS), we recently …
Using momentum-resolved electron energy loss spectroscopy (M-EELS), we recently …
Optical Absorption in Tilted Geometries as an Indirect Measurement of Longitudinal Plasma Waves in Layered Cuprates
Electromagnetic waves propagating in a layered superconductor with arbitrary momentum,
with respect to the main crystallographic directions, exhibit an unavoidable mixing between …
with respect to the main crystallographic directions, exhibit an unavoidable mixing between …
Consistency between reflection M-EELS and optical spectroscopy measurements of the long-wavelength density response of BiSrCaCuO
The density fluctuation spectrum captures many fundamental properties of strange metals.
Using momentum-resolved electron energy-loss spectroscopy (M-EELS), we recently …
Using momentum-resolved electron energy-loss spectroscopy (M-EELS), we recently …
Ghost Josephson plasmon in bilayer superconductors
N Sellati, L Benfatto - arXiv preprint arXiv:2412.14927, 2024 - arxiv.org
The experimental measurement of collective charge fluctuations in metals and
superconductors is a preferential tool to benchmark fundamental interactions in solids …
superconductors is a preferential tool to benchmark fundamental interactions in solids …
Universal scaling solution for a rigidity transition: renormalization group flows near the upper critical dimension
Rigidity transitions induced by the formation of system-spanning disordered rigid clusters,
like the jamming transition, can be well-described in most physically relevant dimensions by …
like the jamming transition, can be well-described in most physically relevant dimensions by …
Theory of high-energy correlated multiphoton x-ray diffraction for synchrotron-radiation sources
A Debnath, R Santra - Physical review research, 2023 - APS
We present a theoretical formulation for the multiphoton diffraction phenomenology in the
nonrelativistic limit, suitable for interpreting high-energy x-ray diffraction measurements …
nonrelativistic limit, suitable for interpreting high-energy x-ray diffraction measurements …