Frustration and order driven by Hund’s rule coupling in antiferrromagnets

✍ Scribed by Efstratios Manousakis

• Book ID: 104078820
• Publisher: Elsevier
• Year: 2010
• Tongue: English
• Weight: 658 KB
• Volume: 3
• Category: Article
• ISSN: 1875-3892
• DOI: 10.1016/j.phpro.2010.01.205

✦ Synopsis

We discuss a simplified version of a recently proposed Hamiltonian to describe the case when the super-exchange interaction between different atomic orbitals leads to frustration because of Hund's rule coupling. Using spin-wave theory, we demonstrate that while this is a rather simple model which can be studied by more elaborate techniques, it contains the essential elements of the physics present in real materials and leads to possible novel magnetic phases.