A. J. Drew

Elucidating the role of hyperfine interactions on organic magnetoresistance using deuterated aluminium tris(8-hydroxyquinoline) (2009)

Rolfe, N. J., Heeney, M., Wyatt, P. B., Drew, A. J., Kreouzis, T., Gillin, W. P.

Measurements of the effect of a magnetic field on the light output and current through an organic light emitting diode made with deuterated aluminium tris(8-hydroxyquinoline) have shown that...

Muon spin rotation study of magnetism and superconductivity in BaFe2-xCoxAs2 and Pr1-xSrxFeAsO (2009)

Bernhard, C., Drew, A. J., Schulz, L., Malik, V. K., Roessle, M., Niedermayer, Ch., ...

We present a muon spin rotation (\muSR) study of the magnetic and superconducting properties of single crystals of electron-doped BaFe2-xCoxAs2 with x=0.08, 0.20, and 0.25 (Tc=9, 25 and 20K) and of...

Muon spin rotation study of magnetism and superconductivity in BaFe§2§-§xCo§xAs§2 and Pr§1§-§xSr§xFeAsO. (2009)

Bernhard, C., Drew, A.J., Schulz, L., Malik, V.K., Rössle, M., Niedermayer, C., ...

New Journal of Physics, 11(2009) S.055050/1-15

Electronic phase separation in the slightly underdoped iron pnictide superconductor Ba(1-x)K(x)Fe(2)As(2) (2008)

Park, J. T., Inosov, D. S., Niedermayer, Ch., Sun, G. L., Haug, D., Christensen, N. B., ...

Here we present a combined study of the slightly underdoped novel pnictide superconductor Ba(1-x)K(x)Fe(2)As(2) by means of X-ray powder diffraction, neutron scattering, muon spin rotation (muSR),...

Coexistence of static magnetism and superconductivity in SmFeAsO1-xFx as revealed by muon spin rotation (2008)

Drew, A. J., Niedermayer, Ch., Baker, P. J., Pratt, F. L., Blundell, S. J., Lancaster, T., ...

The recent observation of superconductivity with critical temperatures up to 55 K in the FeAs based pnictide compounds marks the first discovery of a non copper-oxide based layered high-Tc...

Coexistence of magnetic fluctuations and superconductivity in the pnictide high temperature superconductor SmFeAsO$_{1-x}$F$_{x}$ measured by muon spin rotation (2008)

Drew, A. J., Pratt, F. L., Lancaster, T., Blundell, S. J., Baker, P. J., Liu, R. H., ...

Muon-spin rotation experiments were performed on the pnictide high temperature superconductor SmFeAsO$_{1-x}$F$_{x}$ with x=0.18 and 0.3. We observed an unusual enhancement of slow spin fluctuations...

Direct measurement of the electronic spin diffusion length in a fully functional organic spin valve by low-energy muon spin rotation (2008)

Drew, A. J., Hoppler, J, Schulz, L, Pratt, F. L., Desai, P, Shakya, P, ...

Electronic devices that use the spin degree of freedom hold unique prospects for future technology. The performance of these 'spintronic' devices relies heavily on the efficient transfer of spin...

Direct observation of the flux-line vortex glass phase in a type II superconductor (2006)

Divakar, U., Drew, A. J., Lee, S. L., Gilardi, R., Mesot, J., Ogrin, F. Y., ...

The order of the vortex state in La_{1.9} Sr_{0.1} CuO_{4} is probed using muon spin rotation and small-angle neutron scattering. A transition from a Bragg glass to a vortex glass is observed, where...

Coexistence and coupling of superconductivity and magnetism in thin film structures (2005)

Drew, A J, Lee, S L, Charalambous, D, Potenza, A, Marrows, C, Luetkens, H, ...

Superconducting and magnetic order are usually mutually exclusive, and are found to coexist in relatively few materials. We have obtained direct evidence for a spin-density wave (SDW) coexisting with...

Field-induced hexagonal to square transition of the vortex lattice in overdoped La{1.8}Sr{0.2}CuO{4} (2003)

Gilardi, R., Mesot, J., Drew, A. J., Divakar, U., Lee, S. L., Andersen, N. H., ...

We report on a small angle neutron scattering study of the vortex lattice in overdoped La{2-x}Sr{x}CuO{4} (x=0.2) up to high magnetic fields (9.5 Tesla) applied perpendicular to the CuO2 planes. At...

A small angle neutron scattering study of the vortex matter in La{2-x}Sr{x}CuO{4} (x=0.17) (2003)

Gilardi, R., Streule, S., Drew, A. J., Divakar, U., Lee, S. L., Brown, S. P., ...

The magnetic phase diagram of slightly overdoped La{2-x}Sr{x}CuO{4} (x=0.17) is characterised by a field-induced hexagonal to square transition of the vortex lattice at low fields (~0.4 Tesla) [R....

Novel Characterisation of Coupled Magnetic and Superconductor Order in Thin Film Hybrid Structures (2003)

Drew, A J, Lee, S L, Divakar, U K, Charalambous, D, Potenza, A, Marrows, C, ...

We have obtained direct evidence for the coexistence of a spin density wave (SDW) with bulk superconductivity in the SC layer in a FM/SC/FM bilayer. The enhancement of the SDW amplitude in the...