Double-exchange mechanism in rare-earth compounds

作者：Gulacsi M^*

来源：Annals of Physics, 2015, 354: 454-474.

DOI：10.1016/j.aop.2014.12.027

• Ferromagnetism
• Anderson lattice
• Bosonization

We show that double-exchange mechanism is responsible for ferromagnetism in low dimensional rare-earth compounds. We use the bosonized version of the one-dimensional Anderson lattice model in Toulouse limit to characterize the properties of the emerging ferromagnetic phase. We give a comprehensive description of the ferromagnetic ordering of the correlated electrons which appears at intermediate couplings and doping. The obtained ferromagnetic phase transitions have been identified to be an order-disorder transition of the quantum random transverse-field Ising type.

• 出版日期2015-3