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Structure and Magnetism of Rb1-xFe2F6: Tuning the Valence of Charge-Ordered K...
We have recently discovered a new family of geometric frustrated magnets starting from the parent system, RbFe2F6, with crystallizes in the defect or β-pyrochlore structure... -
Search for magnetic order in the coupled S=1/2 two-leg spin ladder system Ba2...
Ba2CuTeO6 is a newly discovered S=1/2 spin ladder system containing Cu2+ ladders. Our experiments indicate that this material is in very close proximity to the quantum critical... -
Evolution of long-range magnetic order in [Ni(HF2)(pyrazine)2]X (X = PF6 , Sb...
Antiferromagnetic S = 1 one-dimensional chains exhibit a myriad of magnetic ground states depending on the balance between the spin exchange parameter and the single-ion... -
Magnetic ordering in the frustrated honeycomb antiferromagnet Li2IrO3
This proposal is part of our research programme to explore novel ground states in frustrated quantum magnets. Strong spin-orbit coupling is predicted to stabilize composite... -
Condensed Spin Waves in the Rock Salt Metal Oxides
The late first row transition metal monoxides are the canonical antiferromagnets. Their magnetic structures were first determined many decades ago but contemporary studies have... -
Neutron diffraction study of the buckled kagome-lattice Cu3R(SeO3)2O2Cl (R=Yb...
The experimental realization of a S=1/2 kagome lattice has been one of the holy grail of frustrated magnetism because when all antiferromagnetic exchanges cannot be satisfied, a... -
Magnetoelastic Coupling and for Competing Ground States in (Ba1-xAx)Fe2As2 (A...
Unconventional superconductivity has recently been suggested in the new class of iron-based superconductors in which unusual gap symmetries have been observed together with... -
Diffraction paten of a Heisenberg-Kitaev Quantum Spin Liquid candidate Li2RhO3
We propose to continuous our investigation of the magnetic diffraction pattern of the potential Kitaev spin liquid compound Li2RhO3. Moderate spin orbit coupling in the Rh4+ ion... -
Structure and magnetic order of the diamond-kagome planar compound Cu2OSO4
Materials with antiferromagnetic interactions between spins on a triangle lattice inherently exhibit large frustration between similar energy ground states giving rise to novel... -
Magnetic ordering in the layered honeycomb alpha-RuCl3
This proposal is part of our research programme to explore novel phases stabilized by the combined effect of spin-orbit interaction and electron correlations. Here we aim to... -
Crystal and Magnetic Structures of Multiferroic Ammonium Formates NH4M(HCO2)3...
The NH4M(formate)3 (M = Mn, Fe, Co and Ni) series are the most promising members of a new family of multiferroics in which ferroelectric ordering is driven by hydrogen-bonding... -
Nuclear and magnetic structural investigation of single crystalline and powde...
Recent single crystal work on α-CoV2O6 has found a significant enhancement of the nuclear Bragg peaks on entering the low temperature antiferromagnetic states. This... -
Low-Dimensional Quantum Magnetism in a Molecular Framework
The exotic physics of low-dimensional quantum magnets has recently been highlighted by the award of a Nobel Prize to Duncan Haldane. We have identified the molecular framework... -
Fishing for a new magnetic phase in the Pr1-xCaxMnO3 manganites phase diagram
Based on old data and the recent litterature, we suspect the existence of a poorly documented low temperature magnetic phase transition (T<30K) in colossal magnetoresitve... -
Investigation of Magnetic Structures in magnetoelectric multiferroic Gd0.5Dy0...
Ferroelectricity in type-II multiferroics is induced by breaking of inversion symmetry by certain type of spin structure below the magnetic ordering temperature. Therefore, a... -
Investigation of the correlations above TN in PdCrO2
In recent years there has been a large interest in geometrically frustrated magnetic systems, especially those with spins interacting on two-dimensional triangular lattices... -
High resolution neutron diffraction study to investigate quadrupolar ordering...
Recently we have investigated magnetic and quadrupolar ordered states of YbRu2Ge2 using zero-field muon spin relaxation (µSR), neutron diffraction and inelastic neutron... -
Tuning B-B exchange in the R2MnMn(Mn4-xTix)O12 quadruple perovskite manganites
For the RMn3O6 manganites, we have shown that tuning A-B exchange, by choice of A-site cation or by doping magnetic impurities, gives rise to dramatically different magnetic... -
Probing the magnetic structure of transition metal pyrovanadates Co2V2O7
We had been given 1 day of beam time on WISH, RB1710144, to investigate the magnetic structure of T2V2O7 (T=Mn, Ni, Co) We performed power neutron diffraction measurements on... -
Metallic chains on a triangular lattice
Both 1D physics (dimensional frustration) and geometric frustration offer ways of achieving unusual quantum ground states that defy the usual tendency for systems to order at...