TY - JOUR
T1 - Electrical resistivity of solid and liquid Cu up to 5 GPa
T2 - Decrease along the melting boundary
AU - Ezenwa, Innocent C.
AU - Secco, Richard A.
AU - Yong, Wenjun
AU - Pozzo, Monica
AU - Alfè, Dario
N1 - Publisher Copyright:
© 2017 The Authors
PY - 2017/11
Y1 - 2017/11
N2 - The electrical resistivity of high purity Cu has been investigated by both experiments and first principle calculations at pressures up to 5 GPa and at temperatures in the liquid phase up to 1730 K. The resistivity decreases with P and increases with T and our data are in very good agreement in relation to 1 atm data. Our melting temperature data agree with other experimental studies. We show that resistivity of Cu decreases along the P,T-dependent melting boundary in disagreement with prediction of resistivity invariance along the melting boundary. These findings are interpreted in terms of the competing effects of P and T on the electronic structure of liquid Cu. The electronic thermal conductivity is calculated from resistivity data using the Wiedemann-Franz law and is shown to increase with P in both the solid and liquid states but upon T increase, it decreases in the solid and increases in the liquid state.
AB - The electrical resistivity of high purity Cu has been investigated by both experiments and first principle calculations at pressures up to 5 GPa and at temperatures in the liquid phase up to 1730 K. The resistivity decreases with P and increases with T and our data are in very good agreement in relation to 1 atm data. Our melting temperature data agree with other experimental studies. We show that resistivity of Cu decreases along the P,T-dependent melting boundary in disagreement with prediction of resistivity invariance along the melting boundary. These findings are interpreted in terms of the competing effects of P and T on the electronic structure of liquid Cu. The electronic thermal conductivity is calculated from resistivity data using the Wiedemann-Franz law and is shown to increase with P in both the solid and liquid states but upon T increase, it decreases in the solid and increases in the liquid state.
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U2 - 10.1016/j.jpcs.2017.06.030
DO - 10.1016/j.jpcs.2017.06.030
M3 - Article
AN - SCOPUS:85021917159
SN - 0022-3697
VL - 110
SP - 386
EP - 393
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
ER -