NEUTRON STUDIES OF UNDERDOPED SINGLE CRYSTAL La2-xBaxCuO4

Abstract

<p>A series of elastic x-ray and inelastic neutron experiments have been conducted on La_2-xBa_xCuO₄ (LBCO) crystals for 0 <= x <= 0.35. We find that the dynamic correlations in the system are gapless and persist to at least order Kelvin temperatures. These features display qualitative and quantitative similarity to its sister compound La_2-xSr_xCuO₄ (LSCO) for the same doping. We also find evidence that suggests connection between the dynamic rods of scattering and the pseudogap phase found in these materials, though nothing conclusive can be said at present . We will explore the doping, temperature and energy dependence of these dynamic features in detail.</p>