Abstract
We present a self-consistent theory of magnetic short-range order based on a spin-rotation-invariant projection technique for the dynamic spin susceptibility of the square-lattice S = 1 2 Heisenbrg antiferromagnet. Choosing appropriate values for two vertex parameters, the static spin susceptibility as a function of wavevector and temperature is calculated. The uniform static susceptibility and the antiferromagnetic correlation length agree well with Quantum Monte Carlo results over the whole temperature region. The theory generalizes previous isotropic spin-wave approaches and provides an improved interpolation between the low-temperature and high-temperature limits.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
