Auxiliary-boson and DMFT studies of bond ordering instabilities of t-J-V models on the square lattice

Allais, AndreaBauer, JohannesSachdev, Subir2015-06-152014Allais, Andrea, Johannes Bauer, and Subir Sachdev. 2014. “Auxiliary-boson and DMFT studies of bond ordering instabilities of t-J-V models on the square lattice.” Indian Journal of Physics 88, no. 9: 905–913. doi:10.1007/s12648-014-0488-40973-1458http://nrs.harvard.edu/urn-3:HUL.InstRepos:16380266We examine the influence of strong on-site Coulomb interactions on instabilities of the metallic state on the square lattice to general forms of bond order. The Mott correlations are accounted for by the auxiliary-boson method, and by dynamical mean field theory calculations, complementing our recent work using Gutzwiller projected variational wavefunctions. By the present methods, we find that the on-site Mott correlations do not significantly modify the structure of the bond ordering instabilities which preserve time-reversal symmetry, but they do enhance the instability towards time-reversal symmetry breaking “staggered flux” states.en-USAntifer-romagnetic exchangeBond-ordering instabilitiesMott correlationsAuxiliary-boson and DMFT studies of bond ordering instabilities of t-J-V models on the square latticeJournal Article2015-06-1510.1007/s12648-014-0488-4