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5 papers · 1 filter
Fermionic quantum criticality and the fractal nodal surface
Frank Krüger, Jan Zaanen
The complete lack of theoretical understanding of the quantum critical states found in the heavy fermion metals and the normal states of the high-T superconductors is routed in…
Charge dynamics of doped holes in high Tc cuprates - A clue from optical conductivity
A. S. Mishchenko, N. Nagaosa, Z. -X. Shen +6
The charge dynamics in weakly hole doped high temperature superconductors is studied in terms of the accurate numerical solution to a model of a single hole interacting with a quan…
Disorder-induced orbital ordering in doped manganites
Sanjeev Kumar, Arno P. Kampf
We study the effect of quenched disorder on the ordering of orbital and magnetic degrees of freedom in a two-dimensional, two-band double-exchange model for electrons coupled…
Competition between hidden order and antiferromagnetism in URu_2Si_2 under uniaxial stress studied by neutron scattering
M. Yokoyama, H. Amitsuka, K. Tenya +4
We have performed elastic neutron scattering experiments under uniaxial stress sigma applied along the tetragonal [100], [110] and [001] directions for the heavy electron compound…
Electronic Correlations in Oligo-acene and -thiophene Organic Molecular Crystals
Geert Brocks, Jeroen van den Brink, Alberto F. Morpurgo
From first principles calculations we determine the Coulomb interaction between two holes on oligo-acene and -thiophene molecules in a crystal, as a function of the oligomer length…