Muons and magnets

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Spin Dynamics in the Dirac U(1) Spin Liquid YbZn2GaO5

Physical Review Letters American Physical Society (APS) 135:4 (2025) 046704

Authors:

Hank CH Wu, Francis L Pratt, Benjamin M Huddart, Dipranjan Chatterjee, Paul A Goddard, John Singleton, D Prabhakaran, Stephen J Blundell

Abstract:

YbZn2GaO5 is a promising candidate for realizing a quantum spin liquid (QSL) state, particularly owing to its lack of significant site disorder. Pulsed-field magnetometry at 0.5 K shows magnetization saturating near 15 T, with a corrected saturation moment of 2.1(1)μB after subtracting the van Vleck contribution. Our zero-field μSR measurements down to milliKelvin temperatures provide evidence for a dynamic ground state and the absence of magnetic order. To probe fluctuations in the local magnetic field at the muon site, we performed longitudinal field μSR experiments. These results provide evidence for spin dynamics with a field dependence that is consistent with a U1A01 Dirac quantum spin liquid as a plausible description of the ground state.
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Magnetic-field-induced ordering in a spin-1/2 chiral chain

(2025)

Authors:

Rebecca Scatena, Alberto Hernandez-Melian, Benjamin M Huddart, Sam Curley, Robert Williams, Pascal Manuel, Stephen J Blundell, Zurab Guguchia, Zachary E Manson, Jamie L Manson, G Timothy Noe, John Singleton, Tom Lancaster, Paul A Goddard, Roger D Johnson
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Electronic structure calculations for muon spectroscopy

Electronic Structure IOP Publishing (2025)

Authors:

Stephen Blundell, Miki Bonacci, Pietro Bonfà, Roberto De Renzi, Benjamin Huddart, Tom Lancaster, Leandro Miguel Liborio, Ifeanyi John Onuorah, Giovanni Pizzi, Francis Pratt, John Wilkinson
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Spiral spin liquid noise.

Proceedings of the National Academy of Sciences of the United States of America Proceedings of the National Academy of Sciences 122:12 (2025) e2422498122

Authors:

Hiroto Takahashi, Chun-Chih Hsu, Fabian Jerzembeck, Jack Murphy, Jonathan Ward, Jack D Enright, Jan Knapp, Pascal Puphal, Masahiko Isobe, Yosuke Matsumoto, Hidenori Takagi, JC Séamus Davis, Stephen J Blundell
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Muon Studies of Superconductors

Annual Review of Condensed Matter Physics Annual Reviews 16:1 (2025) 367-385
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