Quasi-particle Contribution in Thermal Expansion and Thermal Conductivity in Metals

Research & Reviews: Journal of Pure and Applied Physics

article

Edema OG¹  Osiele OM² 

[1] Federal Polytechnic;Delta State University

关键词: Electron gas;    Quasi-particles;    Electron density parameter;    Thermal expansion;    Thermal conductivity;   

来源: Research & Reviews

【 摘 要 】

In this paper the modified Landau theory of Fermi Liquids was used to compute thermal expansion and thermal conductivity of quasi-particles in metals. The result revealed that as temperature increases the thermal expansion of quasi-particles in metals increases in all the metals investigated. It is also observed that as the electron density parameter increases the thermal expansion of quasi-particles increases. This shows that at low density region the thermal expansion of quasi-particles is large. The result obtained for the thermal conductivity of quasi-particles in metals revealed that for all the metals computed the thermal conductivity of quasi-particles decreases as temperature increases. This seems to suggest that as temperature increases the separation between quasi-particles increases because they are not heavy particles hence, the rate of absorbing heat decreases. The computed thermal expansion and thermal conductivity of quasi-particles are in better agreement with experimental values. This suggests that the introduction of the electron density parameter is promising in predicting the contribution of quasi-particles to the bulk properties of metals. This study revealed the extent to which quasi-particles contribute to the bulk properties of metals, which assisted their potential applications in materials science and engineering development.

【 授权许可】

Unknown