Applied Physics A

, 122:408 | Cite as

Heat conductivity of copper in two-temperature state

  • K. P. Migdal
  • Yu. V. Petrov
  • D. K. Il‘nitsky
  • V. V. Zhakhovsky
  • N. A. Inogamov
  • K. V. Khishchenko
  • D. V. Knyazev
  • P. R. Levashov
Article
Part of the following topical collections:
  1. Emerging trends in photo-excitations and promising new laser ablation technologies

Abstract

Electron–ion relaxation lasts few tens of picoseconds in a submicrometer surface layer of metal after irradiation by femtosecond laser pulse of moderate intensity. During this stage, the electron temperature is many times higher than ion (lattice) temperature. The rate of this relaxation is slower for noble metals due to their small electron–ion coupling. Thus, effects caused by high electron temperature reveal more obviously for those metals. To study electron transport in noble metal nanofilms, we combine the first-principle calculations and our analytical models. The newly calculated electron–phonon coupling and heat conductivity are used in two-temperature hydrodynamics modeling. Results of such modeling are in good agreement with the experimental data and molecular dynamics simulation.

Keywords

Heat Conductivity Density Functional Theory Calculation Liquid Copper Mass Attenuation Coefficient Quantum Molecular Dynamic 

Notes

Acknowledgments

The research has been performed under financial support from Russian Science Foundation (RSCF) (Project No. 14-19-01599).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Centre of Fundamental and Applied ResearchDukhov Research Institute of Automatics (VNIIA)MoscowRussian Federation
  2. 2.Landau Institute for Theoretical PhysicsRussian Academy of ScienceMoscowRussian Federation
  3. 3.Moscow Institute of Physics and TechnologyMoscowRussian Federation
  4. 4.Joint Institute of High TemperaturesMoscowRussian Federation
  5. 5.State Scientific Center of the Russian Federation, Institute for Theoretical and Experimental PhysicsNational Research Centre Kurchatov InstituteMoscowRussian Federation
  6. 6.Tomsk State UniversityTomskRussian Federation

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