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​I am a senior scientist with the ISIS Excitations Group, co-responsible for the MAPS Spectrometer, working on the development of barocalorics for Green Energy applications, and fundamental magnetism.​

​​Measured and simulated spin wave excitations in the multiferroic magnetic metal-organic framework (CD3)2ND2[Mn(DCO2)3]

​I am an inelastic neutron scattering scientist, taking advantage of how neutrons interact with strongly correlated electron systems; in addition to exploiting X-rays, with which I have considerable experience after spending several years working at synchrotrons in France and Germany. My particular interests lie in the magnetic properties of f-electron systems and transition metal oxides, particularly multiferroics and 5d systems, and how scattering may be used to probe them statically and dynamically​. More recently I have started to investigate hybrid organic-inorganic materials such as Metal-Organic Frameworks (MOFs), due to the ​opportunities they offer for tailoring their diverse functionalities, which include multiferroicity, and the possibility to study fundamental magnetic properties in different dimensions. 

I am co-PI on an EPSRC grant to study phonons under pressure in barocaloric MOFs using neutrons in collaboration with Dr Anthony Phillips​ at QMUL. I am fortunate to be working with a fantastic PhD student: Bernet Meijer, and a brilliant postdoc: Richard Dixey.

I was the course co-ordinator for the ISIS Neutron Training Course 2014-2022​, which runs annually for 35 participants to get hands on experience of using ISIS instruments. I have also lectured on neutron scattering at the Institute for Materials Discovery​ at University College London, the Nanotechnology Centre at the Gdansk University of Technology and the SISN Advanced School on Magnetism in Ispra, Italy.


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Selected recent publications​

​​ Adv Funct Materials - 2022 - Yuan - Origin of the Large Entropy Change in the Molecular Caloric and Ferroelectric Ammonium.png

Origin of the large entropy change in the molecular caloric and ferroelectric ammonium sulfate​

Adv. Func. Mat. ​​32, 2207717​​​​​​ (2022​)


Pressure dependence of rotational dynamics in barocaloric ammonium sulfate

Phys. Rev. B ​​106, 064302 (2022​)

​Chapter 5: Inelastic neutron scattering under pressure​

De Gruyter, 139-158​​​​​ (2022​)​


Viewpoint: Topological magnetism turns elementary

Physics ​​15, 30​​​​​ (2022​)​

​Low thermal conductivity in a modular inorganic material with bonding anisotropy and mismatch

Science ​​373, 1017​​​​​ (2021​)


Order by disorder from bond-​dependent exchange and intensity signature of nodal quasiparticles in a honeycomb cobaltate​​​

Nature Comm. ​​12, 3936​​​​​ (2021​)


Antiferromagnetic double perovskite Ba​2MnTeO6

Chem. Mater. ​​32, 7070​​​​​ (2020​)


​Exchange interactions mediated by non-magnetic cations in double perovskites

Phys. Rev. Lett. ​​124, 077202​ (2020​)


NaYbS2, a new planar spin-1/2 triangular lattice magnet and possible spin liquid
Phys. Rev. B 98, 220409 (2018)​


Anomalous metamagnetism in the low carrier density Kondo lattice YbRh3Si7
Phys. Rev. X ​​8, 041047​ (2018)


Magnetic excitations in non-collinear antiferromagnetic Weyl semimetal Mn3​Sn​ 
Npj Quant. Mat. ​​3, 63 (2018)


​Fractionalized excitations in the partially magnetized spin liquid ​​candidate YbMgGaO4​​​
Nat. Commun. 9, 4138 (2018)


Spin-liquid-like state in a spin-1/2 square-lattice antiferromagnet perovskite induced by d10–d0 cation mixing ​​


Coloumb spin liquid in anion-disordered pyrochlore Tb2Hf2​O7
Nat. Commun. 8, 892 (2017)


Magnetic structure and spin wave excitations in the multiferroic magnetic metal-organic framework (CD3)2ND2[Mn(DCO2)3]​
Phys. Rev. B 96, 094423 (2017)​


Resonant x-ray spectroscopy of uranium intermetallics at the U M4,5 edges
Phys. Rev. B 95, 245103 (2017)​


Evidence for a spinon Fermi surface in a triangular lattice quantum spin liquid candidate
Nature 540, 559 (2016)​


Spin wave excitations in the tetragonal double perovskite Sr2CuWO6
Phys. Rev. B 94, 064411 (2016)


Competing exchange interactions on the verge of a metal-insulator transition in the two-dimensional spiral magnet Sr3Fe2O7
Phys. Rev. Lett. 113, 147206 (2014)


Robustness of basal-plane antiferromagnetic order and the Jeff=1/2 state to structural distortions in single-layer​
​spin-orbit Mott insulators

Phys. Rev. Lett. 110, 117207 (2013)​


Negative thermal expansion and antiferromagnetism in the actinide oxypnictide NpFeAsO
Phys. Rev. B 85, 174506 (2012)​


Role of intrinsic disorder in the structural phase transition of magnetoelectric EuTiO3
Phys. Rev. B 85, 184107 (2012)​


Femtoscale magnetically induced lattice distortions in multiferroic TbMnO3
Science 333, 1273 (2011)


​Resonant X-ray Scattering Study of the URu2Si2 Hidden-order Phase
Phys. Rev. B 83, 193102 (2011)​


​Circularly Polarized X-Rays as a Probe of Noncollinear Magnetic Order in Multiferroic TbMnO3

Phys. Rev. Lett. 102, 237205 (2009)​​