Fermi-surface measurements on the low-carrier density ferromagnet Ca1-xLaxB6 and SrB6
Recently it has been discovered that weak ferromagnetism of a dilute three-dimensional electron gas develops on the energy scale of the Fermi temperature in some of the hexaborides; that is, the Curie temperature approximately equals the Fermi temperature. We report the results of de Haas-van Alphen experiments on two concentrations of La-doped CaB6 as well as Ca-deficient Ca1-δB6 and Sr-deficient Sr1-δB6. The results show that a Fermi surface exists in each case and that there are significant electron-electron interactions in the low-density electron gas.
Publication Source (Journal or Book title)
Physical Review B - Condensed Matter and Materials Physics
Hall, D., Young, D., Young, D., Fisk, Z., Murphy, T., Palm, E., Teklu, A., Teklu, A., & Goodrich, R. (2001). Fermi-surface measurements on the low-carrier density ferromagnet Ca1-xLaxB6 and SrB6. Physical Review B - Condensed Matter and Materials Physics, 64 (23), 2331051-2331054. Retrieved from https://digitalcommons.lsu.edu/physics_astronomy_pubs/5995