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11 papers · 2 filters
Transverse acoustic phonon anomalies at intermediate wavevectors in MgVO
T. Weber, B. Roessli, C. Stock +7
Magnetic spinels (with chemical formula O, with a 3 transition metal ion) that also have an orbital degeneracy are Jahn-Teller active and hence possess a coupl…
Heavy-Fermion Superconductivity in CeAgSi --Interplay of Spin and Valence Fluctuations--
Gernot W. Scheerer, Zhi Ren, Gérard Lapertot +2
We present the pressure-temperature phase diagram of the antiferromagnet CeAgSi established via resistivity and calorimetry measurements under quasi-hydrostatic conditions…
Dimensionality driven enhancement of ferromagnetic superconductivity in URhGe
Daniel Braithwaite, Dai Aoki, Jean-Pascal Brison +4
In most unconventional superconductors, like the high-Tc cuprates, iron pnictides, or heavy fermion systems, superconductivity emerges in the proximity of an electronic instability…
Long-range dynamical magnetic order and spin tunneling in the cooperative paramagnetic states of the pyrochlore analogous spinel antiferromagnets CdYb2X4 (X = S, Se)
P. Dalmas de Reotier, C. Marin, A. Yaouanc +6
Magnetic systems with spins sitting on a lattice of corner sharing regular tetrahedra have been particularly prolific for the discovery of new magnetic states for the last two deca…
Order by quenched disorder in the model triangular antiferromagnet RbFe(MoO4)2
A. I. Smirnov, T. A. Soldatov, O. A. Petrenko +5
We observe a disappearance of the 1/3 magnetization plateau and a striking change of the magnetic configuration under a moderate doping of the model triangular antiferromagnet RbFe…
Magnetic order, hysteresis and phase coexistence in magnetoelectric LiCoPO
Ellen Fogh, Rasmus Toft-Petersen, Eric Ressouche +8
The magnetic phase diagram of magnetoelectric LiCoPO is established using neutron diffraction and magnetometry in fields up to 25.9T applied along the crystallographic -axis…