Minimal model of the magnetically induced metal-insulator transition: Finite-temperature properties
Abstract
An unconventional type of metal-insulator transition is realized in the FeSi1-xGex alloys which is driven by the magnetic instability of the paramagnetic insulator. Recently, a minimal model for this type of transition has been introduced and studied in the limit of vanishing temperature. Here we explore the finite-temperature properties of the minimal model in the mean-field approximation. We show that the predictions of the model are in qualitative agreement with experimental data on FeSi1-xGex and on FeGe under pressure.
- Publication:
-
Physical Review B
- Pub Date:
- April 2014
- DOI:
- 10.1103/PhysRevB.89.155127
- Bibcode:
- 2014PhRvB..89o5127D
- Keywords:
-
- 71.30.+h;
- 75.30.Kz;
- 75.50.Bb;
- Metal-insulator transitions and other electronic transitions;
- Magnetic phase boundaries;
- Fe and its alloys