TY - JOUR
T1 - Determination of the electron-phonon coupling constant in tungsten
AU - Daraszewicz, Szymon L.
AU - Giret, Yvelin
AU - Tanimura, Hiroshi
AU - Duffy, Dorothy M.
AU - Shluger, Alexander L.
AU - Tanimura, Katsumi
PY - 2014/7/14
Y1 - 2014/7/14
N2 - We used two methods to determine the effective electron-phonon coupling constant (G0) in tungsten. Our first principles calculations predict G0 = 1.65 × 1017W 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 G0 = 1.4(3) × 1017W 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.
AB - We used two methods to determine the effective electron-phonon coupling constant (G0) in tungsten. Our first principles calculations predict G0 = 1.65 × 1017W 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 G0 = 1.4(3) × 1017W 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.
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U2 - 10.1063/1.4890413
DO - 10.1063/1.4890413
M3 - Article
AN - SCOPUS:84904758424
VL - 105
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 2
M1 - 023112
ER -