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Investigating spin dynamics in spinel spin ice with musr and high freqeuncy s...
Spin ice materials exhibit novel magnetic behaviour because of their atomic interactions and geometric constraints of the crystal lattice. This novel behaviour takes the form of... -
Novel ground states and spin ordering in pyrochlore iridates
We request four days of beam time to conduct zero, transverse, and longitudinal field measurements on pyrochlore iridates A2Ir2O7 (A-227) with A = Yb, Y, Nd in the temperature... -
A µSR stoichiometry study of TixV1-x alloys superconductivity in the presen...
This is a continuation proposal, for work carried out previously on the EMU and MuSR spectrometers. We have determined that spin fluctuations are present in this system, by... -
muSR in Rare-earth doped Phenanthrene Superconductors
We plan to perform transverse field and zero-field μSR experiments to investigate the temperature dependence of the relaxation rate in the superconducting phase of... -
Spectroscopy of muon centres in n-type silicon carbide
We propose a series of measurements to complete the previous direct spectroscopic measurements of the Muonium defect energy levels in Silicon Carbide (SiC; RB110134). We will... -
Investigation of muonium diffusion, states and charge cycles in vanadium dioxide
We propose a study to characterize diffusive motion of muonium, charge cycles and Mu0 states in vanadium dioxide (VO2) using zero and longitudinal field muon spin depolarization... -
muSR study of the charge ordered phase of RbFe2As2 iron based superconductor
We propose to study the evolution of ZF-muSR and low-field (100 G) TF-muSR spectra and relaxation times across the charge ordering temperature T0 = 140 K of RbFe2As2 iron based... -
Muon Spin Resonance investigations on two quantum critical points in CeFeAs1-...
Recently, it has been reported that CeFeAsO belongs to orthorhombic structure where both Fe and Ce moments order antiferromagnetically around 140K and 4K, respectively, whereas... -
Local Field fluctuations and Mu Dynamics in Vanadium Dioxide Compounds
This is an in depth study of magnetic fluctuations and local field dynamics leading into the low temperature magnetic phase of Vanadium Oxide compounds (VO2, VO2:W and VO2:Ti)... -
The nature of excitations in a molecular Haldane system
It is well known that an S = 1 antiferromagnetic spin chain is predicted to have a quantum disordered ground state and a gap in its excitation spectrum. This so-called Haldane... -
An ALC study of the organic ferroelectrics TTF-CA and TTF-BA (continuation)
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Lithium-Methylamine: using muons to finally tell us what is going on with the...
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Spin Rotation Experiments at a Pulsed Muon Source using Broadband RF Pulses
In this proposal we wish to explore how the RF-MuSR technique might be developed for measurements akin to FT-NMR. Our work will focus on the broadband excitation of paramagnetic... -
LF and RF muSR Studies of Polymer Dynamics in Polydimethylsiloxane
Muon spin relaxation will be used to study the dynamical properties of the polymer polydimethylsiloxane. This has emerged as an excellent model system for the study of polymer... -
Probing the glass transition in polymers using LF muSR
Nearly all polymers form glasses and the glass transition at temperature Tg dominates many physical properties of polymers that are relevant for their applications. The most... -
To complete a pressure dependence study of topological frustration in Y(Mn0.9...
While Y(Mn1-xAlx)2 (x<0.02) is seen as a system of AF coupled local Mn moments (T<110K), alloys with 0.02<x<0.3 show characteristics of a topologically frustrated... -
A hidden spin liquid state in strongly correlated FeCrAs
In this continuation proposal we will conclude our muon study of FeCrAs, a recently re-examined material that displays many of the above characteristics, suggesting that it is a...