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Search for roton excitations in S=1/2 and S=1 isotropic triangular-lattice an...
This proposal is part of our research programme to explore the effects of frustrated interactions and quantum fluctuation on the spin dynamics in quantum magnets. Here we plan... -
Weyl Points in the Magnetic Excitations of Er2Ti2O7
In the condensed matter community the last ten years have seen a revolution in our understanding of how topology influences the properties of solids. A famous example from the... -
Spin-orbit coupling and spin dynamics in hexagonal iridate
Hexagonal iridate Na2IrO3 has recently been proposed as a candidate material to exhibit strong spin-orbit coupling effects which may stabilize a Mott insulating state with... -
Low-energy excitations of the quantum critical S=1/2 ladder material Ba2CuTeO6
Ba2CuTeO6 is a newly discovered S=1/2 spin ladder material thought to be uniquely close to the theoretically predicted quantum critical point of the coupled two-leg spin ladder... -
Spin dynamics in a honeycomb antiferromagnet with strong spin-orbit coupling
This proposal is part of our research programme to explore novel ground states stabilized by frustrated interactions in quantum magnets. Here we plan to measure the spin... -
Tuning confinement potential of spinons in an Ising chain using magnetic fields
The Ising chain realises the fundamental paradigm of spin fractionalization, where locally flipping a spin creates two kinks (spinons) that can separate away at no energy cost,... -
Spin dynamics in the 1/3rd magnetization plateau phase of a triangular quantu...
This experiment is part of our research programme to explore novel quantum phases and phase transitions induced by magnetic field in frustrated quantum magnets. The quasi-2D... -
Quantum dynamics in a J_eff=1/2 isotropic triangular-lattice antiferromagnet
This proposal is part of our research programme to explore the spin dynamics of strongly-frustrated quantum antiferromagnets. A canonical model system is the spin-1/2 triangular... -
Determining the magnetic structure of Na0.5Ca0.5Mn7O12: A candidate material ...
Magnetic and orbital ordering in the manganese based perovskites has been of huge interest in solid-state physics since the 1950's. More recently, the family of AA′3Mn4O12... -
Crystal field excitations of Co ions in the ideal triangular lattice antiferr...
We propose to measure crystal field transitions of Co ions in Ba3CoSb2O9, proposed to be a unique experimental realization of the S=1/2 antiferromagnet on the triangular... -
Magnetic structure in the one-third magnetization plateau phase of a triangul...
We propose single crystal diffraction measurements to probe the magnetic structure in the 1/3rd magnetization plateau phase observed for fields in the range 10-15 T in the... -
Excitation spectrum of the quantum critical S=1/2 ladder material Ba2CuTeO6
Ba2CuTeO6 is a recently discovered S=1/2 spin ladder system containing Cu2+ ladders. Our experiments indicate that it is extremely close to the theoretically predicted quantum... -
Magnetic excitations in a three-dimensional honeycomb iridate
5d oxides have been attracting much attention as candidates to realize novel types of electronic ground states stabilized by the strong spin orbit coupling. This proposal is to... -
Magnetic ground state of the candidate quantum ice material Pr2Sn2O7
Quantum spin ice is a novel form of matter in which the spins remain dynamic even at absolute zero due to quantum fluctuations. The requirements on the single-ion wavefunction... -
Temperature dependence of spin dynamics near quantum criticality in an Ising ...
This proposal is part of our research programme to explore the interplay of thermal and quantum fluctuations near zero-temperature quantum phase transitions. Here we apply for a... -
Exploring the spin dynamics in the first S = 1 ¿Haldane spaghetti¿ system: Li...
We propose to explore the low energy excitation spectrum of the LiNiVO4, a system which we believe is a previously unobserved realization of a random distribution of 1D... -
Search for quantum string excitations in a frustrated pyrochlore magnet
The rare earth pyrochlores Ho2Ti2O7 and Dy2Ti2O7, which possess local-Ising spins at the vertices of corner-sharing tetrahedra are classical spin liquids with a degenerate... -
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... -
Search for magnetic order in a frustrated triangular lattice organic system
This proposal is part of our research programme on novel quantum phases in frustrated lattices. Here we propose to determine the magnetic structure in a quasi-two-dimensional... -
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...
