Spin treatment-based approach for electronic transport in paramagnetic liquid transition metals |
| |
| Authors: | B Grosdidier A Ben Abdellah K Bouziane SM Mujibur Rahman JG Gasser |
| |
| Institution: | 1. Laboratoire de Chimie Physique – Approche Multi-Echelle des Milieux Complexes , Institut Jean Bariol, Université de Lorraine, Institut de Chimie , Physique et Matériaux 1 Bd Arago, 57078 , Metz Cedex 3 , France benoit.grosdidier@univ-lorraine.fr;3. Laboratoire de Chimie Physique – Approche Multi-Echelle des Milieux Complexes , Institut Jean Bariol, Université de Lorraine, Institut de Chimie , Physique et Matériaux 1 Bd Arago, 57078 , Metz Cedex 3 , France;4. Faculté des Sciences et Techniques de Tanger , Equipe de Mécanique Matériaux et Métallurgie (EMMM), Université Abdelmalek Essaadi , B.P. 416, Tanger , Maroc;5. Université Internationale de Rabat, Parc Technopolis Rabat-Shore , Sala El Jadida , 11100 , Maroc;6. Université Internationale de Rabat, Parc Technopolis Rabat-Shore , Sala El Jadida , 11100 , Maroc;7. Physics Department , College of Science, Sultan Qaboos University , P.O. Box 36, Postal Code 123 , Al-Khod, Muscat , Sultanate of Oman;8. Laboratoire de Chimie Physique – Approche Multi-Echelle des Milieux Complexes , Institut Jean Bariol, Université de Lorraine, Institut de Chimie , Physique et Matériaux 1 Bd Arago, 57078 , Metz Cedex 3 , France |
| |
| Abstract: | A novel concept is proposed to calculate both the electrical resistivity and thermoelectric power (TEP) of liquid transition metals (Mn, Fe, Co and Ni) characterized by a paramagnetic state in the liquid phase. By contrast to a previous work (PRB64, 094202 (2001)), where the resistivity was calculated by treating separately the interactions between spin up and spin down using the Matthiessen rule, our current approach is based on two types of muffin tin potentials in the t-matrix, namely spin up and spin down. The resistivity is treated as the result of the interference of the two kinds of spin states of electrons including a cross-contribution. The calculated resistivity values agree reasonably well with the available experimental ones for all the metals considered. Moreover, the calculated TEP, as deduced from the slope of resistivity vs. energy, has been found to be positive for Mn and Fe but negative for Co and Ni. Besides that, this formalism for resistivity calculation may be generalized to a system that may exist in different atomic states. It is worth mentioning that this concept is analogous to the one used in the process of neutron scattering on a metal composed of multiple isotopes. |
| |
| Keywords: | resistivity thermoelectric power liquid transition metal spin alloy spin state |
|
|
