Professor Stephen Blundell: Publications

Spin dynamics and field-induced magnetic phase transition in the honeycomb Kitaev magnet alpha-Li2IrO3

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Authors:

Sungkyun Choi, John Singleton, Tom Lancaster, Stephen Blundell, Radu Coldea

Abstract:

The deposited package contains magnetic susceptibility, muon spin relaxation, powder inelastic neutron scattering and pulsed-field magnetization data of the honeycomb Kitaev magnet alpha-Li2IrO3. The readme file inside the .zip archive contains detailed information about the individual file formats in the data archive.

Magnetic order and enhanced exchange in the quasi-one-dimensional molecule-based antiferromagnet Cu(NO3)2(pyz)3.

Physical chemistry chemical physics : PCCP 21:3 (2019) 1014-1018

Authors:

Benjamin M Huddart, Jamie Brambleby, Tom Lancaster, Paul A Goddard, Fan Xiao, Stephen J Blundell, Francis L Pratt, John Singleton, Piero Macchi, Rebecca Scatena, Alyssa M Barton, Jamie L Manson

Abstract:

The quasi-one-dimensional molecule-based Heisenberg antiferromagnet Cu(NO3)2(pyz)3 has an intrachain coupling J = 13.7(1) K () and exhibits a state of long-range magnetic order below TN = 0.105(1) K. The ratio of interchain to intrachain coupling is estimated to be |J'/J| = 3.3 × 10-3, demonstrating a high degree of isolation for the Cu chains.

Local magnetism, magnetic order and spin freezing in the 'nonmetallic metal' FeCrAs

(2018)

Authors:

BM Huddart, MT Birch, FL Pratt, SJ Blundell, DG Porter, SJ Clark, W Wu, SR Julian, PD Hatton, T Lancaster

Multigap Superconductivity in RbCa2Fe4As4F2 Investigated Using mu SR Measurements

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 87:12 (2018) ARTN 124705

Authors:

Devashibhai T Adroja, Franziska KK Kirschner, Franz Lang, Michael Smidman, Adrian D Hillier, Zhi-Cheng Wang, Guang-Han Cao, Gavin BG Stenning, Stephen J Blundell

A.C. susceptibility as a probe of low-frequency magnetic dynamics

Journal of Physics: Condensed Matter IOP Publishing 31:1 (2018)

Authors:

Craig Topping, Stephen Blundell

Abstract:

The experimental technique of a.c. susceptibility can be used as a probe of magnetic dynamics in a wide variety of systems. Its use is restricted to the low- frequency regime and thus is sensitive to relatively slow processes. Rather than measuring the dynamics of single spins, a.c. susceptibility can be used to probe the dynamics of collective objects, such as domain walls in ferromagnets or vortex matter in superconductors. In some frustrated systems, such as spin glasses, the complex interactions lead to substantial spectral weight of fluctuations in the low-frequency regime, and thus a.c. susceptibility can play a unique role. We review the theory underlying the technique and magnetic dynamics more generally and give applications of a.c. susceptibility to a wide variety of experimental situations.

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