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Comment on "Unconventional Magnetism in a Nitrogen-Containing Analog of Cupric Oxide"
Alexander A. Tsirlin, Helge Rosner
In a recent Letter [PRL, 107, 047208 (2011)], Zorko et al. report on an "unexpected inhomogeneous magnetism" related to "a peculiar fragility" of the resonating-valence-bond (RVB)…
Thermoelectric properties of two-dimensional slabs of Ba8Ga16Ge30 from first principles
Deepa Kasinathan, Vicente Pacheco-Espejel, Helge Rosner
Thermoelectric effects enable the direct conversion between thermal and electrical energy and provide an alternative route for power generation and refrigeration. The clathrate Ba8…
Nanostructuring of Ba8Ga16Ge30 clathrates
Vicente Pachecoa, Raul Cardoso--Gil, Deepa Kasinathan +6
First thermoelectric properties measurements on bulk nanostructured Ba8Ga16Ge30 clathrate-I are presented. A sol-gel-calcination route was developed for preparing amorphous nanosiz…
Electronic and Thermoelectric Properties of RuIn_{3-x}A_{x} (A = Sn, Zn)
Deepa Kasinathan, Maik Wagner, Klaus Koepernik +3
Recently, we reported [M. Wagner et al., J. Mater. Res. 26, 1886 (2011)] transport measurements on the semiconducting intermetallic system RuIn3 and its substitution derivatives Ru…
Symmetry preserving lattice collapse in tetragonal SrFe_(2-x)Ru_xAs_2 (x = 0, 0.2) -- a combined experimental and theoretical study
Deepa Kasinathan, Miriam Schmitt, Klaus Koepernik +8
In a joint experimental and theoretical study, we investigate the isostructural collapse from the ambient pressure tetragonal phase to a collapsed tetragonal phase for non-supercon…
Phase separation and frustrated square lattice magnetism of Na1.5VOPO4F0.5
A. A. Tsirlin, R. Nath, A. M. Abakumov +7
Crystal structure, electronic structure, and magnetic behavior of the spin-1/2 quantum magnet Na1.5VOPO4F0.5 are reported. The disorder of Na atoms leads to a sequence of structura…
Spiral ground state against ferroelectricity in the frustrated magnet BiMnFe2O6
Artem M. Abakumov, Alexander A. Tsirlin, Juan Manuel Perez-Mato +4
The spiral magnetic structure and underlying spin lattice of BiMnFe2O6 are investigated by low-temperature neutron powder diffraction and density functional theory band structure c…
Frustrated couplings between alternating spin-1/2 chains in AgVOAsO4
Alexander A. Tsirlin, Ramesh Nath, Jörg Sichelschmidt +3
We report on the crystal structure and magnetic behavior of the spin-1/2 compound AgVOAsO4. Magnetic susceptibility, high-field magnetization, and electron spin resonance measureme…