Alberto de la Torre presents a poster on the electronic structure of lightly doped Sr2IrO4 at the M2S 2015 conference in Geneva (Switzerland).
The complete poster is available here:
[su_document url= »http://obrsgdgj.preview.infomaniak.website/wp-content/uploads/2015/08/MS2_Adlt.pdf »]
The pseudospin 1/2 Heisenberg antiferromagnet Sr2IrO4 shares key properties with the parent compound of the cuprate high-Tc superconductors. Here we investigate the doping evolution of (Sr1-xLax)2IrO4 by ARPES. For a doping level of x = 0.05, we find an unusual metallic state with coherent nodal excitations and an antinodal pseudogap bearing a strong resemblance to underdoped cuprates. This state emerges from a rapid collapse of the Mott gap with doping, resulting in a large underlying Fermi surface that is backfolded by a (π, π) reciprocal lattice vector.