Theoretical Study of Electron – Phonon Interactions Using Linear Response Theory
DOI:
https://doi.org/10.37375/sjfssu.v5i2.3351Keywords:
Electron, Phonon interactions, linear Response theory, transition metalAbstract
This work presents a theoretical investigation of electron–phonon interactions in transition metals using linear response theory, with the aim of evaluating the agreement between ab initio calculations and experimental data. The study focuses on aluminium (Al), molybdenum (Mo), and niobium (Nb), utilizing a wave-vector-dependent approach to calculate the electron–phonon coupling. The linear muffin-tin orbital (LMTO) method combined with the local density approximation (LDA) was employed to evaluate the screening of the one-electron potential within the framework of linear response theory. From these calculations, key physical parameters, including electron–phonon coupling strengths and transport coefficients, were extracted. The theoretical results show a strong correspondence with experimental measurements, demonstrating the reliability of the linear response approach in capturing electron–phonon coupling behaviour in these metals. These findings support the broader applicability of first-principles methods in the study of phonon-mediated transport phenomena in metallic systems.
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