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5 papers · 2 filters
The Local Structure of La1.65Eu0.2Sr 0.15CuO4 determined by 63Cu NMR Spectroscopy and Van Vleck Paramagnetism of Eu3+ Ions
Barbara Simovic, Markus Huecker, P. Chris Hammel +3
We investigate the local symmetry of the tilting of the CuO octahedra in LaEuSrCuO by means of Cu NMR spectroscopy and the Va…
Renormalized perturbation theory for Fermi systems: Fermi surface deformation and superconductivity in the two-dimensional Hubbard model
A. Neumayr, W. Metzner
Divergencies appearing in perturbation expansions of interacting many-body systems can often be removed by expanding around a suitably chosen renormalized (instead of the non-inter…
Quantum phase transition in the dioptase magnetic lattice
C. Gros, P. Lemmens, K. -Y. Choi +3
The study of quantum phase transitions, which are zero-temperature phase transitions between distinct states of matter, is of current interest in research since it allows for a des…
Experimental Evidence for a Glass forming "Stripe Liquid" in the Magnetic Ground State of La1.65Eu0.2Sr0.15CuO4
B. Simovic, P. C. Hammel, M. Hucker +2
We report measurements of the longitudinal () and transverse () decay rates of the magnetization of La nuclei performed in a high quality si…
Classical heisenberg antiferromagnet away from the pyrochlore lattice limit: entropic versus energetic selection
C. Pinettes, B. Canals, C. Lacroix
The stability of the disordered ground state of the classical Heisenberg pyrochlore antiferromagnet is studied within extensive Monte Carlo simulations by introducing an additional…