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Dimensional Reduction and Frustration in the 2D Quantum Dimer Magnet BaCuSi2O6
For a decade field-tuned quantum criticality in the spin-dimer system BaCuSi2O6 has been of great interest due to an unconventional dimensional crossover at its quantum critical... -
Spin exchange interactions and fractionalized spin excitations in the geometr...
The recently discovered new triangular lattice QSL candidate YbMgGaO4 has attracted great interest on rare earth frustrated magnets. Another triangular lattice rare earth... -
Anomalous lattice dynamics of the elemental superconductor niobium
Phonon lifetimes in BCS superconductors provide information on the details of the electron-phonon coupling mechanism. In 2008 high-resolution neutron inelastic scattering... -
Magnetic excitation spectrum near incipient SDW order in Nb1-xFe2+x
Our previous neutron diffraction on C14 Laves phase compounds Nb1-xFe2+x revealed thata spin-density-wave (SDW) is masking an underlying ferromagnetic (FM) quantum critical... -
High Energy Spin Excitations in Electron Overdoped NaFe0.7Ni0.3As
The interplay between magnetism and superconductivity in iron-based high-temperature superconductors are of great interest in condensed matter physics research. These two... -
Quantum critical E/T scaling of the dynamic susceptibility in Sr3Ru2O7
Spin fluctuations of materials close to a quantum critical point (QCP) exhibit anomalous behaviors. Sr3Ru2O7 has been shown to exhibit field-induced spin density wave (SDW)... -
Magnetic excitations in a candidate magnetic XY analogue of graphene
This proposal is part of our research programme to explore the experimental manifestation of topological properties of magnetic excitations. The honeycomb ferromagnet is... -
Investigation of magnon dynamics of rare-earth garnet Ho3Fe5O12
Rare-earth Iron garnets (RE3Fe5O12) have been in the focus of active research for the last five decades due to their fascinating properties, such as large magnetostriction,... -
Cascading magnetization plateaus in monoclinic CoV2O6
The aim of this proposal is to understand the origin of the cascade of magnetisation plateaus in monoclinic CoV2O6. While 1/3 plateaus have been reported in the literature,... -
Magnetic structure of the beta-phase of MnAs
MnAs is a promising room-temperature ferromagnetic material for spintronic applications and magnetologic devices, as it can be grown epitaxially on the most relevant... -
Spin-orbit transitions of Co3+ in LaCoO3
In our first measurement of the high energy spectrum of LaCoO3 we observed a signal which is a promising candidate for an electronic transition from the low spin ground state of... -
Magnetic excitations and Orbital configuration in the vanadium spinel MgV2O4
The Vanadium spinels provide ideal systems to study the interactions between spin, lattice and orbital degrees of freedom. The magnetic V3+ ions are antiferromagnetically... -
Exotic spin excitations in a quasi one-dimensional anisotropic Heisenberg magnet
Very recently, string states have been identified for the first time in antiferromagnetic Heisenberg-Ising chain SrCo2V2O8 in longitudinal magnetic fields using high-resolution... -
Exchange interactions and spin gap in Cu2PO4OH
The mineral Libethenite, Cu2PO4OH, is an ideal system in which to study low dimensional quantum magnetism. Its magnetic behaviour is complex but is related to systems with...
