1999/09/10 by P. Prelovsek, M. Long, Prelovsek, P. +5 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.cond-mat/9909159
RevTeX, 5 pages, 3 figures, to appear in Phys. Rev. Lett
arxiv created 1999/09/10 · arxiv updated 2009/11/30
The Hall constant RH in a tight-binding model of correlated electrons on a ladder at T=0 is expressed in terms of derivatives of the ground state energy with respect to external magnetic and electric fields. This novel method is used for the analysis of the t-J model on finite size ladders. It is found that for a single hole RH is hole-like and close to the semiclassical value, while for two holes it can vary with ladder geometry. In odd-leg ladders, RH behaves quite regularly changing sign as a function of doping, the variation being quantitatively close to experimental results in cuprates.