Magnetic fluctuations and spin freezing in nonsuperconducting LiFeAs derivatives

(2013)

Authors:

JD Wright, MJ Pitcher, W Trevelyan-Thomas, T Lancaster, PJ Baker, FL Pratt, SJ Clarke, SJ Blundell

AC magnetic measurement of LiFeAs at pressures up to 5.2 GPa: The relation between Tc and the structural parameters

Journal of the Korean Physical Society 63:3 (2013) 445-447

Authors:

S Yamaguchi, N Yamaguchi, M Mito, H Deguchi, PJ Baker, SJ Blundell, MJ Pitcher, DR Parker, SJ Clarke

Abstract:

The pressure effects on the 111-type Fe-based superconductor LiFeAs were investigated through AC susceptibility measurements and X-ray diffraction experiments, and revealed a correlation between the superconducting transition temperature (T c) and the As-Fe-As bond angle (α) rather than the height of As from the Fe layers (h As). As the pressure was increased, T c of 17 K at P = 0 GPa decreased down to 10 K at P = 5.2 GPa. According to a previous report from an X-ray diffraction experiment, α changes from 101.5° at 0 GPa to 97.8° at 17 GPa. The obtained change in T c is consistent with Lee et al.'s plot of T c as a function of α, and from this result, we conclude that T c will fall to zero at around α = 98°. © 2013 The Korean Physical Society.

$μ$SR study of magnetic order in the organic quasi-one-dimensional ferromagnet F4BImNN

Phys. Rev. B American Physical Society 88:6 (2013) 064423-064423

Authors:

Stephen J Blundell, Johannes S Möller, Tom Lancaster, Peter J Baker, Francis L Pratt, Gonca Seber, Paul M Lahti

Magnetic transition and spin dynamics in the triangular Heisenberg antiferromagnet $\alpha$-KCrO$_{2}$

(2013)

Authors:

F Xiao, T Lancaster, PJ Baker, FL Pratt, SJ Blundell, JS Möller, NZ Ali, M Jansen

Playing quantum hide-and-seek with the muon: localizing muon stopping sites

(2013)

Authors:

JS Möller, P Bonfà, D Ceresoli, F Bernardini, SJ Blundell, T Lancaster, R De Renzi, N Marzari, I Watanabe, S Sulaiman, MI Mohamed-Ibrahim