Theoretically, one often use the spin-spin correlation function (which is the sum of 3 terms in the x, y, z directions) to describe ferromagnetic (FM) or anti-ferromagnetic (AFM) order. For example, on the square lattice,
- If tends to a positive value as the separation between i, j tends to infinity, we say there is FM order;
- If changes sign alternatively as j changes between the two sub-lattices (with spin up and spin down), we say there is AFM order.
I want to know if there are other spin correlation functions that can help identify more complicated magnetic order, such as spin-canting and ferrimagnetism?
(Visualization of these orders can be found at, e.g. https://web.archive.org/web/20160611194326/http://magician.ucsd.edu/essentials/WebBookse18.html)
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Quantum Physics
- Quantum Mechanics
More Zhengyuan Yue's questions See All
Similar questions and discussions