Ferromagnetic transition in a double-exchange model
Eugene Kogan, Mark Auslender, Eran Dgani
TL;DR
This paper calculates the ferromagnetic transition temperature in a double-exchange model with classical spins using the Dynamical Mean Field Approximation, covering various ratios of Hund exchange to bandwidth.
Contribution
It provides a comprehensive calculation of transition temperatures across different coupling regimes in the double-exchange model.
Findings
Transition temperature depends on Hund exchange and bandwidth ratio.
Method applies to arbitrary relation between Hund exchange and electron bandwidth.
Results help understand ferromagnetism in double-exchange systems.
Abstract
We calculate the temperature of a ferromagnetic transition in a double-exchange model with classical core spins for arbitrary relation between Hund exchange coupling and electron band width by solving the Dynamical Mean Field Approximation equations.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsQuantum and electron transport phenomena · Magnetic properties of thin films · Physics of Superconductivity and Magnetism