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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... -
MuSR study of organic solar cells
Organic solar cells are of great interest, due to their relative cheapness and ease of fabrication. Unfortunately the efficiency of the devices is much lower than the... -
Models of the [FeFe]-hydrogenase active site: high symmetry in a biologically...
The [FeFe]-hydrogenase enzymes are some of the best catalysts know for generating hydrogen. We have an ongoing programme to understand how their chemistry works, and to... -
Light induced structural changes in hybrid lead-halide perovskites CH3NH3Pb(I...
A controlled investigation of light-induced changes in hybrid perovskites is required to achieve stable operation of tandem solar cells and colour-tuneable light-emitting... -
Interaction of muonium centres and excess carriers in highly injected silicon
We have developed a method to measure carrier recombination lifetime in crystalline silicon with the photo-muSR technique. The key of the method is to measure the dependence of... -
Validating a new theoretical method for predicting the HFC of small molecular...
ALC is the best technique to characterize muoniated radicals, which are produced by muonium adduct to unsaturated bonds in the organic molecules. Good agreement between data... -
How muons see the motion of negative hydrogen ions in solids
Ions are often diffusing in solids. Among many ions, H+, Li+, Na+, O2-, and F- are known to become mobile at high temperatures in solids and they are used for fuel cells and... -
Artificial [FeFe]-Hydrogenases and Muon Spectroscopy
Preliminary measurements of [FeFe]-hydrogenase model complexes were made in a previous experiment using EMU (RB 1010177). The results were interpreted in combination with DFT... -
How complex is complex: an ALC study of a 10-mer helical peptide chain
There have been ALC studies on the interaction of muons with native proteins, but little systematic work that contributes understanding of how spectroscopic information alters... -
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... -
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... -
Muon Studies of Na-ion Diffusion in Novel Low-temperature Cathode Material: "...
The most important scientific problem to solve for our modern society is how to convert and store clean energy. We are currently on the verge for a general breakthrough in... -
Dynamics in staggered molecular spin chains
The ability to manipulate quantum states of matter is a goal of condensed matter science. Recent progress in molecular magnetism has shown the potential for gaining control over... -
Low temperature magnetic order and spin dynamics in Ho2Ir2O7
Ho2Ir2O7 has a cubic pyrochlore structure. Trigonal crystal fields at both the Ho and Ir sites create Ising-like moments that can order in a non-collinear arrangement with... -
Investigation of Magnetic Fields in ZnGeP2:Mn
We propose an investigation of the magnitude and fluctuations of internal magnetic fields in Mn-doped ZnGeP2. This chalcopyrite structured semiconductor has a ferromagnetic (FM)... -
Single molecular TIPS-pentacene isolated in a solid-state matrix
We have recently been awarded beamtime on the Cronus spectrometer, via the Riken proposal system, to investigate the possibility of performing solid-state laser excitation... -
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... -
Photoinduced carrier lifetime in silicon: E-field application for carrier sep...
This continuing experiment is proposed based on our previous experiment RB1510208, which we have carried out just recently. The experiment successfully observed the lifetime of... -
Short range magnetic order in the compositionally modulated Bi2Cr4/3Ni2/3O6 p...
It is particularly challenging to synthesize a novel multiferroic material as it seems that the mechanisms that allow ferromagnets and ferroelectrics to work are mutually... -
Kinetics of Muoniated Radicals Studied With Radio Frequency Muon Spin Resonance
Radio-frequency muon spin resonance is a powerful technique for studying free radicals and their reaction kinetics, but it has not yet been used to study complex reactions in...