1995/05/25 by Z. Y. Weng, C. Y. Chen, Weng, Z. Y. +3
Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/9505124
11 pages, Revtex, no figures; submitted to PRL
arxiv created 1995/05/25 · arxiv updated 2009/11/30
By explicitly tracking the Marshall sign, a phase string induced by hopping is revealed in the one-hole-doped t-J model. It is rigorously shown that such a phase string cannot be eliminated through low-lying spin excitations, and it either causes the spectral weight Z=0, or leads to the localization of the doped hole. Implications for finite doping are also discussed.