μsR investigation of spin dynamics in the spin-ice material Dy 2Ti2O7

Journal of Physics Condensed Matter 19:32 (2007)

Authors:

J Lago, SJ Blundell, C Baines

Abstract:

We present a detailed muon spin relaxation (μ+SR) study of the spin-ice material Dy2Ti2O7. Polycrystalline samples of this material have been studied in the temperature range 0.02K161Dy and 163Dy nuclear spins. © IOP Publishing Ltd.

Anomalous temperature evolution of the internal magnetic field distribution in the charge-ordered triangular antiferromagnet AgNiO2

(2007)

Authors:

T Lancaster, SJ Blundell, PJ Baker, ML Brooks, W Hayes, FL Pratt, R Coldea, T Soergel, M Jansen

Muon-fluorine entangled states in molecular magnets

(2007)

Authors:

T Lancaster, SJ Blundell, PJ Baker, ML Brooks, W Hayes, FL Pratt, JL Manson, MM Conner, JA Schlueter

Dissipation in the superconducting state of κ- (BEDT-TTF)2 Cu (NCS)2

Physical Review B - Condensed Matter and Materials Physics 76:1 (2007)

Authors:

L Yin, MS Nam, JG Analytis, SJ Blundell, A Ardavan, JA Schlueter, T Sasaki

Abstract:

We have studied the interlayer resistivity of the prototypical quasi-two-dimensional organic superconductor κ- (BEDT-TTF)2 Cu (NCS)2 as a function of temperature, current, and magnetic field, within the superconducting state. We find a region of nonzero resistivity whose properties are strongly dependent on magnetic field and current density. There is a crossover to non-Ohmic conduction below a temperature that coincides with the two-dimensional vortex solid-vortex liquid transition. We interpret the behavior in terms of a model of current- and thermally driven phase slips caused by the diffusive motion of the pancake vortices which are weakly coupled in adjacent layers, giving rise to a finite interlayer resistance. © 2007 The American Physical Society.

A muon-spin relaxation study of BiMnO3

(2007)

Authors:

T Lancaster, SJ Blundell, PJ Baker, FL Pratt, W Hayes, I Yamada, M Azuma, M Takano