Isotope effect in superconducting n-doped SrTiO.

We report the influence on the superconducting critical temperature T in doped SrTiO of the substitution of the natural O atoms by the heavier isotope O. We observe that for a wide range of doping this substitution causes a strong (~50%) enhancement of T. Also the magnetic critical field H is increased by a factor ~2.

Collapse of the Mott Gap and Emergence of a Nodal Liquid in Lightly Doped Sr(2)IrO(4).

We report angle resolved photoemission experiments on the electron doped Heisenberg antiferromagnet (Sr(1-x)La(x))(2)IrO(4). For a doping level of x=0.05, we find an unusual metallic state with coherent nodal excitations and an antinodal pseudogap bearing strong similarities with underdoped cuprates.

Magnetic structure of phase II in U(Ru(0.96)Rh(0.04))2Si2 determined by neutron diffraction under pulsed high magnetic fields.

We report neutron diffraction measurements on U(Ru(0.96)Rh(0.04))(2)Si(2) single crystal under pulsed high magnetic fields up to 30 T applied along the tetragonal c axis.

Classification systems used in medical libraries.

The present study identifies the classification systems used in 941 libraries. It explores the reasons behind the choice of the National Library of Medicine Classification by 589 libraries. Reclassification procedures were investigated through a questionnaire sent to twenty-five libraries that have changed to NLM since 1959.