Revisiting the low temperature electron-phonon relaxation of noble metals

Abstract

The low temperature electron-phonon (e-ph) relaxation near the surface of noble metals, Cu and Ag, is studied by using the density-functional theory approach. The appearance of the surface phonon mode can give rise to a strong enhancement of the Eliashberg function at low frequency $\omega$. Assuming the Eliashberg function proportional to the square of $\omega$ in the low frequency limit, the e-ph relaxation time obtained from the surface calculations is shorter than that from the bulk calculation. The calculated e-ph relaxation time for the former is in agreement with a recent experiment for thin films.

arXiv comment5 pages, 6 figures

References in corpus (16)

• Advanced capabilities for materials modelling with Quantum ESPRESSO
• Thermal Contraction and Disordering of the Al(110) Surface
• Opportunities for mesoscopics in thermometry and refrigeration: Physics and applications
• Electron-phonon interactions and related physical properties of metals from linear-response theory
• Electron-phonon coupling and energy flow in a simple metal beyond the two-temperature approximation
• Electron relaxation in metals: Theory and exact analytical solutions
• Theory of Out-of-Equilibrium Ultrafast Relaxation Dynamics in Metals
• Thermalization in simple metals: The role of electron-phonon and phonon-phonon scatterings
• Tracking the time-evolution of the electron distribution function in Copper by femtosecond broadband optical spectroscopy
• Observation of disorder-induced weakening of electron-phonon interaction in thin noble metal films
• Electron-phonon coupling and longitudinal mechanical-mode cooling in a metallic nanowire
• Hot electrons in low-dimensional phonon systems
• Nanoscale Quantum Calorimetry with Electronic Temperature Fluctuations
• Anomalous electronic heat capacity of copper nanowires at sub-kelvin temperatures
• Low-temperature electron-phonon heat transfer in metal films
• Quantum noise of electron-phonon heat current

Cited by in corpus (2)

• Energy relaxation and electron-phonon coupling in laser-excited metals
• Evidence of the disorder-independent electron-phonon scattering time in thin NbN films