Analyzing {\it{ab-initio}} electronic and phonon band structure, temperature-dependent carrier transport in layered Ti2AlC is investigated. It is found that cylindrical Fermi surface is the origin of the anisotropic carrier effective mass (infinite effective mass along c axis ) leading to strong anisotropic (insulator along c axis and metallic along the layer) carrier transport in these films. Using electronic and phonon bandstructures, we develop an analytical model of electron-phonon interaction as well as in-plane carrier conductivity originating from strong inter-valley (s→d) scattering in Ti2AlC. We invoke density functional theory to calculate the deformation potential corresponding to acoustic phonon vibration. The calculated deformation potential is in well agreement with the extracted deformation potential value from the transport data. Extracted deformation potential will be useful for prediction of transport quantities for application of these metals at elevated temperatures.
@article{arxiv.1512.04512,
title = {Carrier transport in layered nanolaminated films},
author = {Aniruddha Konar and Rajan Kumar Pandey and Tamilmani Ethirajan},
journal= {arXiv preprint arXiv:1512.04512},
year = {2015}
}