Daraszewicz, SL;
Giret, Y;
Tanimura, H;
Duffy, DM;
Shluger, AL;
Tanimura, K;
(2014)
Determination of the electron-phonon coupling constant in tungsten.
Applied Physics Letters
, 105
(2)
, Article 023112. 10.1063/1.4890413.
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Abstract
We used two methods to determine the effective electron-phonon coupling constant (G 0) in tungsten. Our first principles calculations predict G 0 = 1.65 × 1017 W m−3 K−1. The temporal decay of the femtosecond-resolution optical reflectivity for a (100) surface of bulk W was measured using a pump-probe scheme and analysed using ab initio parameterised two temperature model, which includes both the effects of the electron-phonon coupling and thermal conduction into bulk. This analysis gives G 0 = 1.4(3) × 1017 W m−3 K−1, in good agreement with the theoretical prediction. The described effective method of calculating and measuring G0 in bulk materials can be easily extended to other metals.
| Type: | Article |
|---|---|
| Title: | Determination of the electron-phonon coupling constant in tungsten |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.4890413 |
| Publisher version: | http://dx.doi.org/10.1063/1.4890413 |
| Language: | English |
| Additional information: | Reprinted with permission from Daraszewicz, SL; Giret, Y; Tanimura, H; Duffy, DM; Shluger, AL; Tanimura, K; (2014) Determination of the electron-phonon coupling constant in tungsten. Applied Physics Letters, 105 (2), Article 023112, 10.1063/1.4890413. Copyright 2014, American Institute of Physics. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1451162 |
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