Professor Stephen Blundell: Publications

Competing pairing interactions responsible for the large upper critical field in a stoichiometric iron-based superconductor, CaKFe$_4$As$_4$

(2020)

Authors:

Matthew Bristow, William Knafo, Pascal Reiss, William Meier, Paul C Canfield, Stephen J Blundell, Amalia I Coldea

Information and decoherence in a muon-fluorine coupled system

(2020)

Authors:

JM Wilkinson, SJ Blundell

Near-ideal molecule-based Haldane spin chain

Physical Review Research American Physical Society (APS) 2:1 (2020) 013082

Authors:

Robert C Williams, William JA Blackmore, Samuel PM Curley, Martin R Lees, Serena M Birnbaum, John Singleton, Benjamin M Huddart, Thomas J Hicken, Tom Lancaster, Stephen J Blundell, Fan Xiao, Andrew Ozarowski, Francis L Pratt, David J Voneshen, Zurab Guguchia, Christopher Baines, John A Schlueter, Danielle Y Villa, Jamie L Manson, Paul A Goddard

Optimization of superconducting properties of the stoichiometric CaKFe4As4

Supercond. Sci. Technol. 33 (2020) 025003 IOP Publishing (2019)

Authors:

Shiv J Singh, Simon J Cassidy, Matthew Bristow, Stephen Blundell, Simon J Clarke, AI Coldea

Muon-spin relaxation and AC magnetometry study of the ferrimagnet LaSr2Cr2SbO9

Journal of Solid State Chemistry 279 (2019)

Authors:

EC Hunter, PD Battle, SJ Blundell, CV Topping, FKK Kirschner, F Lang

Abstract:

© 2019 The Authors AC susceptibility and muon spin relaxation data have been collected from a polycrystalline sample of LaSr2Cr2SbO9, a perovskite-like compound wherein the unequal distribution of Cr3+ and Sb5+ cations over two crystallographically-distinct six-coordinate B sites results in the onset of ferrimagnetism at ~150 K. The data are used to elucidate the dynamics of the ferrimagnetic domain walls, thought to lie in Sb-rich regions, and suggest an energy barrier of ~0.13 eV to their motion. The muon data confirm that the ferrimagnetic order is a true bulk phenomenon. The behaviour of this material is briefly compared to that of Ni2+- based relaxor ferromagnets.

51��