Origin of ferromagnetism in Cs2AgF4: importance of Ag - F covalency
Deepa Kasinathan, A. B. Kyker, D. J. Singh
Abstract
The magnetic nature of Cs2AgF4, an isoelectronic and isostructural analogue of La2CuO4, is analyzed using density functional calculations. The ground state is found to be ferromagnetic and nearly half metallic. We find strong hybridization of Ag-d and F-p states. Substantial moments reside on the F atoms, which is unusual for the halides and reflects the chemistry of the Ag(II) ions in this compound. This provides the mechanism for ferromagnetism, which we find to be itinerant in character, a result of a Stoner instability enhanced by Hund's coupling on the F.
Create a lesson
Related papers
Ferron polariton Hall effect: Deflecting optically rectified polarization with magnetic fields
Omer Yaniv, Dominik M. Juraschek
Band structure of two-dimensional graphene and of one-dimensional nanoribbons via variational quantum algorithms: from energies to wavefunction quality
Raúl Medrano Millán, Rodrigo Gil-Merino y Rubio, Juan Borge et al.
Aging-Improved NH3 Sensing in Polypyrrole Nanotube Chemiresistors
Arya Mohan, Olivia Kamdom, Antoine Enel et al.
Effect of molybdenum content on phase transformations during continuous heating of metastable β Ti-Mo alloys
Veronika Kočiščáková, Anna Veverková, Josef Stráský et al.
Controlling nitrogen incorporation in (Eu,Ba,Ca)TiO3-derived perovskite-type oxynitrides through Fermi Level Engineering
Margarida Barroso, Marie Neumann, Rachele Sciotto et al.
Effect of compensation on magnetic ordering in (Ga,Mn)As
I. A. Kokurin, N. S. Averkiev