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Metal-Insulator Transition and Orbital Order in PbRuO3
S. A. J. Kimber, J. A. Rodgers, H. Wu +5
Anomalous low temperature electronic and structural behaviour has been discovered in PbRuO3. The structure (space group Pnma, a = 5.56314(1), b = 7.86468(1), c = 5.61430(1) A) and…
Enhanced dimerization of TiOCl under pressure: spin-Peierls - to - Peierls transition
S. Blanco-Canosa, F. Rivadulla, A. Pineiro +6
We report high-pressure x-ray diffraction and magnetization measurements combined with ab-initio calculations to demonstrate that the high-pressure optical and transport transition…
Ising magnetism and ferroelectricity in CaCoMnO
Hua Wu, T. Burnus, Z. Hu +7
The origin of both the Ising chain magnetism and ferroelectricity in CaCoMnO is studied by electronic structure calculations and x-ray absorption spectroscopy…
Doped orbitally-ordered systems: another case of phase separation
K. I. Kugel, A. L. Rakhmanov, A. O. Sboychakov +1
A possible mechanism of electronic phase separation in the systems with orbital ordering is analyzed. We suggest a simple model taking into account an interplay between the delocal…
Homopolar bond formation in ZnVO close to a metal-insulator transition
V. Pardo, S. Blanco-Canosa, F. Rivadulla +4
Electronic structure calculations for spinel vanadate ZnVO show that partial electronic delocalization in this system leads to structural instabilities. These are a consequ…
Classical dimers and dimerized superstructure in orbitally degenerate honeycomb antiferromagnet
G. Jackeli, D. I. Khomskii
We discuss the ground state of the spin-orbital model for spin-one ions with partially filled levels on a honeycomb lattice. We find that the orbital degrees of freedom in…