A ug 2 00 3 CONTRASTING PATHWAYS TO MOTT GAP COLLAPSE IN ELECTRON AND HOLE DOPED CUPRATES

Recent ARPES measurements on the electron-doped cuprate Nd2−xCexCuO4 can be interpreted in a mean field model of uniform doping of an antiferromagnet, with the Mott gap closing near optimal doping. Mode coupling calculations confirm the mean field results, while clarifying the relation between the Mott gap and shortrange magnetic order. The same… CONTINUE READING