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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... -
Quantum criticality in the Kitaev system alpha-RuCl3
The experimental realization of a Kitaev model on the honeycomb lattice has been a major topic in a condensed matter physics because the model uniquely provides exactly solvable... -
The effect of porosity on sodium diffusion in hard carbons for Na ion batteri...
Here we propose to use muon spectroscopy to study the diffusion of sodium in hard carbon anode materials of various porosity for sodium ion batteries. Hard carbon is the most... -
An ALC study of the organic ferroelectrics TTF-CA and TTF-BA
The study of organic ferroelectrics based on mixed-stack charge-transfer salts is currently a rapidly developing research field. These materials attract interest as highly... -
Spectroscopy of muon centres in n-type silicon carbide
We propose to continue laser spectroscopy measurements of the muonium (Mu-) centres in n-type doped silicon carbide. Scanning a wide wavelength range, and changing the relative... -
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)... -
HIGH RESOLUTION NEUTRON DIFFRACTION STUDIES ON NEW POLYMORPHS OF MAGENSIUM TE...
The development of high energy density and high efficiency hydrogen storage materials is widely considered to be one of the most challenging barriers to the adoption of fuel... -
Field-induced low-temperature magnetic phase in alkali-metal sesquioxides
Open p-shell anionic compounds are model systems where the interplay between charge, lattice, orbital, and spin degrees of freedom leads to complex magnetic behavior. In the... -
Probing superconductivity, static magnetism and light ion diffusion in molecu...
In 2012 we demonstrated that molecular spacer layers could be intercalated in between FeSe layers resulting in a dramatic enhancement of the critical temperature: FeSe is itself... -
Probing glassy magnetic transitions in structurally disordered (defect fluori...
Cubic A2B2O7 oxides with A standing for a rare-earth element and B for a transition or main block metal have been systematically studied for their frequently exotic... -
Structure and magnetic properties of Sr4Fe6O12
Despite many previous attempts, Sr4Fe6O12 (the expected fully reduced composition for Sr4Fe6O13-x) has not been synthesised. It is of interest because it is believed to contain... -
Muon spin dynamics in ZnSe
We intend to detail the muonium dynamics and investigate the interaction with charge carriers in n-type ZnSe. A doped ZnSe sample (resistivity=10^4 Ohm.cm, n=10^13 cm^-3) is... -
Spin Frustration in Iridate Systems, and the Role of the Spin-Orbit Coupling
We propose to investigate the roles of the spin-orbit interaction and geometrical frustration in stabilising a quantum spin liquid phase (QSL) in some iridate systems. µSR is a... -
Probing time-reversal symmetry breaking superconductivity in non-centrosymmet...
SrAuSi3 crystallizes in a BaNiSn3-type structure which has no inversion symmetry in real space and also a superconductor with a Tc of 1.54 K. SrAuSi3 includes Au as a principal... -
Spin dynamics in the light induced high spin state of valence tautomers
Valence tautomers are bistable molecules of potential interest for magnetic storage and spintronic devices which can be switched between a low-spin and a high-spin state by... -
Probing the interplay between charge density wave and superconductivity in st...
We propose to study PdxIrTe2, which evolves from a charge-orbital density wave state to a superconducting state with doping. It has a similar structural motif, doping-dependent... -
Non-equilibrium effects in the skyrmion material Co8Zn8Mn4
Skyrmions are topologically protected, vortex-like nano-sized objects which have been shown to exist in the spin textures of a range of magnetic materials. As we have recently... -
muSR studies of expanded fullerides across the superconductivity dome
FCC Cs3C60 can be driven to a bulk superconducting state without symmetry change by the application of pressure. Its Tc passes through a maximum of 35 K at 6 kbar. We have been... -
Analysis of magnetic properties via the F-mu-F state in inorganic flourides
Here we propose to investigate the fluroide containing compounds - AgF2, CuF2 and Cs2CuF4. By taking advantage of the F-mu-F coupling wich occurs in these compounds, we will... -
Probing re-entrant glassy state in spin chain compound Sm2BaNiO5 using µ-SR s...
We are currently investigating Haldane spin-chain compounds [PRB 2017] of the type R2BaNiO5 (R = rare earth) using bulk measurements and have found the multifunctional...