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10 papers · 2 filters
Electronic structure of the two-dimensional Heisenberg antiferromagnet VOCl: a multi-orbital Mott insulator
S. Glawion, M. R. Scholz, Y. -Z. Zhang +7
We have studied the electronic structure of the two-dimensional Heisenberg antiferromagnet VOCl using photoemission spectroscopy and density functional theory including local Coulo…
Electronic and magnetic properties of the kagome systems YBaCo4O7 and YBaCo3MO7 (M=Al, Fe)
N. Hollmann, Z. Hu, M. Valldor +6
We present a combined experimental and theoretical x-ray absorption spectroscopy (XAS) study of the new class of cobaltates YBaCo4O7 and YBaCo3MO7 (M= Al, Fe). The focus is on the…
AgCuVO4: a quasi one-dimensional S = 1/2 chain compound
A. Möller, M. Schmitt, W. Schnelle +2
We present a joint experimental and computational study of the recently synthesized spin 1/2 system silver-copper-orthovanadate AgCuVO4 [A. Möller and J. Jainski, Z. Anorg. Allg. C…
Phase separation in doped systems with spin-state transitions
A. O. Sboychakov, K. I. Kugel, A. L. Rakhmanov +1
Spin-state transitions, observed in many transition metal compounds containing Co and Fe, may occur with the change of temperature, pressure, but also with doping, in…
Quantum magnets with weakly confined spinons: Multiple length scales and quantum impurities
R. L. Doretto, Matthias Vojta
In magnets with strong quantum fluctuations, paramagnetic ground states with or without confinement of spinon excitations can be realized. Here we discuss the physics of the confin…
Large violation of Wiedemann Franz law in Luttinger liquids
Arti Garg, David Rasch, Efrat Shimshoni +1
We show that in weakly disordered Luttinger liquids close to a commensurate filling the ratio of thermal conductivity kappa and electrical conductivity sigma can deviate strongly f…