Effect of Stripes on Electronic States in Underdoped La_{2-x}Sr_xCuO_4

Abstract

We investigate the electronic states of underdoped La_{2-x}Sr_xCuO_4 (LSCO) by using a microscopic model, i.e., t-t'-t''-J model, containing vertical charge stripes. The numerically exact diagonalization calculation on small clusters shows the consistent explanation of the physical properties in the angle-resolved photoemission, neutron magnetic scattering and optical conductivity experiments such as the antiphase domain and quasi-one-dimensional charge transport. The pair correlation function of the d-channel is suppressed by the stripes. These results demonstrate a crucial role of the stripes in LSCO

4 pages, 4 EPS figures, revised version, to appear in Phys. Rev. Lett. Vol.82, No.25, 1999