Abstract
Using the density-matrix renormalization-group (DMRG) technique, we carry out a large scale numerical calculation for the $S=2$ antiferromagnetic Heisenberg (AFH) chain. We obtain the magnetization curve of $S=2$ chain near the critical field. The corrections to the magnetization due to the magnon-magnon interaction are the same order for $S=2$ and $S=1$ chains. By comparing the experimental magnetization with our calculation, we find that the gap obtained experimentally is about $0.08J$ which is close to the accurate DMRG estimation for the $S=2$ AFH chain. Numerical errors in our large scale calculation are also discussed.
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.
