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12 papers · 2 filters
Huge Thermoelectric Power Factor: FeSb2 versus FeAs2 and RuSb2
Peijie Sun, Niels Oeschler, Simon Johnsen +2
The thermoelectric power factor of the narrow-gap semiconductor FeSb2 is greatly enhanced in comparison to the isostructural homologues FeAs2 and RuSb2. Comparative studies of magn…
Mapping Kitaev's quantum double lattice models to Levin and Wen's string-net models
Oliver Buerschaper, Miguel Aguado
We exhibit a mapping identifying Kitaev's quantum double lattice models explicitly as a subclass of Levin and Wen's string net models via a completion of the local Hilbert spaces w…
Multiband Hubbard Models and the Transition Metals
Gernot Stollhoff
Correlation computations on multiband Hubbard Hamiltonians are presented. It is shown why the proper degeneracy is of vital importance and that the atomic exchange interaction play…
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…
Crystal water induced switching of magnetically active orbitals in CuCl2
M. Schmitt, O. Janson, M. Schmidt +4
The dehydration of CuCl2*2(H2O) to CuCl2 leads to a dramatic change in magnetic behavior and ground state. Combining density functional electronic structure and model calculations…
Heavy fermion behavior in PrRh2B2C: Excitonic mass enhancement
V. K. Anand, Z. Hossain, G. Chen +2
We report magnetic and transport properties of a new quaternary borocarbide PrRhBC, based on magnetisation, resistivity and specific heat studies. This compound forms i…