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Professor Tom Lancaster's Outputs (121)

Field-orientation-dependent magnetic phases in GdRu₂Si₂ probed with muon-spin spectroscopy (2025)
Journal Article
Huddart, B. M., Hernández-Melián, A., Wood, G. D. A., Mayoh, D. A., Gomilšek, M., Guguchia, Z., Wang, C., Hicken, T. J., Blundell, S. J., Balakrishnan, G., & Lancaster, T. (2025). Field-orientation-dependent magnetic phases in GdRu₂Si₂ probed with muon-spin spectroscopy. Physical Review B, 111(5), Article 054440. https://doi.org/10.1103/physrevb.111.054440

Centrosymmetric GdRu₂Si₂ exhibits a variety of multi-𝑄 magnetic states as a function of temperature and applied magnetic field, including a square skyrmion-lattice phase. The material's behavior is strongly dependent on the direction of the applied f... Read More about Field-orientation-dependent magnetic phases in GdRu₂Si₂ probed with muon-spin spectroscopy.

Anisotropic Skyrmion and Multi-q Spin Dynamics in Centrosymmetric Gd2PdSi3 (2025)
Journal Article
Gomilšek, M., Hicken, T., Wilson, M., Franke, K., Huddart, B., Štefančič, A., Holt, S., Balakrishnan, G., Mayoh, D., Birch, M., Moody, S., Luetkens, H., Guguchia, Z., Telling, M., Baker, P., Clark, S., & Lancaster, T. (2025). Anisotropic Skyrmion and Multi-q Spin Dynamics in Centrosymmetric Gd2PdSi3. Physical Review Letters, 134(4), Article 046702. https://doi.org/10.1103/physrevlett.134.046702

Skyrmions are particlelike vortices of magnetization with nontrivial topology, which are usually stabilized by Dzyaloshinskii-Moriya interactions (DMI) in noncentrosymmetric bulk materials. Exceptions are centrosymmetric Gd- and Eu-based skyrmion-lat... Read More about Anisotropic Skyrmion and Multi-q Spin Dynamics in Centrosymmetric Gd2PdSi3.

Magnetic properties of a staggered S=1 chain with an alternating single-ion anisotropy direction (2025)
Journal Article
Vaidya, S., Curley, S. P. M., Manuel, P., Stewart, J. R., Le, M. D., Balz, C., Shiroka, T., Blundell, S. J., Wheeler, K. A., Calderon-Lin, I., Manson, Z. E., Manson, J. L., Singleton, J., Lancaster, T., Johnson, R. D., & Goddard, P. A. (2025). Magnetic properties of a staggered S=1 chain with an alternating single-ion anisotropy direction. Physical Review B, 111, Article 014421. https://doi.org/10.1103/physrevb.111.014421

Materials composed of spin-1 antiferromagnetic (AFM) chains are known to adopt complex ground states that are sensitive to the single-ion-anisotropy (SIA) energy (𝐷), and intrachain (𝐽0) and interchain (𝐽′1,2) exchange energy scales. While theoretica... Read More about Magnetic properties of a staggered S=1 chain with an alternating single-ion anisotropy direction.

Pseudo-easy-axis anisotropy in antiferromagnetic S=1 diamond-lattice systems (2024)
Journal Article
Vaidya, S., Hernández-Melián, A., Tidey, J. P., Curley, S. P. M., Sharma, S., Manuel, P., Wang, C., Hannaford, G. L., Blundell, S. J., Manson, Z. E., Manson, J. L., Singleton, J., Lancaster, T., Johnson, R. D., & Goddard, P. A. (2024). Pseudo-easy-axis anisotropy in antiferromagnetic S=1 diamond-lattice systems. Physical Review B, 110(17), https://doi.org/10.1103/physrevb.110.174438

We investigate the magnetic properties of S = 1 antiferromagnetic diamond-lattice, NiX2(pyrimidine)2 (X = Cl, Br), hosting a single-ion anisotropy (SIA) orientation which alternates between neighboring sites. Through neutron diffraction measurements... Read More about Pseudo-easy-axis anisotropy in antiferromagnetic S=1 diamond-lattice systems.

Magnetic structure and crystal-field states of antiferromagnetic CeNiGe3: Neutron scattering and μSR investigations (2024)
Journal Article
Kataria, A., Kumar, R., Adroja, D. T., Ritter, C., Anand, V. K., Hillier, A. D., Huddart, B. M., Lancaster, T., Rols, S., Koza, M. M., Langridge, S., & Sundaresan, A. (2024). Magnetic structure and crystal-field states of antiferromagnetic CeNiGe3: Neutron scattering and μSR investigations. Physical Review B, 110(18), Article 184412. https://doi.org/10.1103/physrevb.110.184412

We present the results of microscopic investigations of antiferromagnetic CeNiGe3 using neutron powder diffraction (NPD), inelastic neutron scattering (INS), and muon spin relaxation (μSR) measurements. CeNiGe3 crystallizes in a centrosymmetric ortho... Read More about Magnetic structure and crystal-field states of antiferromagnetic CeNiGe3: Neutron scattering and μSR investigations.

Weyl fermion excitations in the ideal Weyl semimetal CuTlSe2 (2024)
Journal Article
Wang, C. N., Tay, D., Dong, Q. X., Okvátovity, Z., Huddart, B. M., Ma, C. Y., Yokoyama, K., Yu, L., Lancaster, T., Chen, G. F., Ott, H.-R., & Shiroka, T. (2024). Weyl fermion excitations in the ideal Weyl semimetal CuTlSe2. Physical Review Research, 6(3), Article 033229. https://doi.org/10.1103/physrevresearch.6.033229

An ideal Weyl semimetal is characterized by a dispersion in which only Weyl cones intersect the Fermi level, with low-energy behavior being governed by Weyl fermions. Although ideal Weyl semimetals have long been anticipated, only a few are realized... Read More about Weyl fermion excitations in the ideal Weyl semimetal CuTlSe2.

Magnetism in the axion insulator candidate Eu5In2Sb6 (2024)
Journal Article
Rahn, M. C., Wilson, M. N., Hicken, T. J., Pratt, F. L., Wang, C., Orlandi, F., Khalyavin, D. D., Manuel, P., Veiga, L. S. I., Bombardi, A., Francoual, S., Bereciartua, P., Sukhanov, A. S., Thompson, J. D., Thomas, S. M., Rosa, P. F. S., Lancaster, T., Ronning, F., & Janoschek, M. (2024). Magnetism in the axion insulator candidate Eu5In2Sb6. Physical Review B, 109(17), Article 174404. https://doi.org/10.1103/physrevb.109.174404

Eu5In2Sb6 is a member of a family of orthorhombic nonsymmorphic rare-earth intermetallics that combines large localized magnetic moments and itinerant exchange with a low carrier density and perpendicular glide planes. This may result in special topo... Read More about Magnetism in the axion insulator candidate Eu5In2Sb6.

Depth-dependent magnetic crossover in a room-temperature skyrmion-hosting multilayer (2024)
Journal Article
Hicken, T. J., Wilson, M. N., Salman, Z., Zhang, S. L., Holt, S. J. R., Prokscha, T., Suter, A., Pratt, F. L., van der Laan, G., Hesjedal, T., & Lancaster, T. (2024). Depth-dependent magnetic crossover in a room-temperature skyrmion-hosting multilayer. Physical Review B, 109(13), Article 134423. https://doi.org/10.1103/physrevb.109.134423

Skyrmion-hosting multilayer stacks are promising avenues for applications, although little is known about the depth dependence of the magnetism. We address this by reporting the results of circular dichroic resonant elastic x-ray scattering (CD-REXS)... Read More about Depth-dependent magnetic crossover in a room-temperature skyrmion-hosting multilayer.

Spatially anisotropic S=1 square-lattice antiferromagnet with single-ion anisotropy realized in a Ni(II) pyrazine-n,n′-dioxide coordination polymer (2023)
Journal Article
Manson, J. L., Pajerowski, D. M., Donovan, J. M., Twamley, B., Goddard, P. A., Johnson, R., …Manuel, P. (2023). Spatially anisotropic S=1 square-lattice antiferromagnet with single-ion anisotropy realized in a Ni(II) pyrazine-n,n′-dioxide coordination polymer. Physical Review B, 108(9), Article 094425. https://doi.org/10.1103/physrevb.108.094425

Muon-spin relaxation investigation of magnetic bistability in a crystalline organic radical compound (2023)
Journal Article
Hernández-Melían, A., Huddart, B., Pratt, F., Blundell, S., Mills, M., Young, H., Preuss, K., & Lancaster, T. (2023). Muon-spin relaxation investigation of magnetic bistability in a crystalline organic radical compound. Journal of Physics and Chemistry of Solids, 181, https://doi.org/10.1016/j.jpcs.2023.111493

We present the results of a muon-spin relaxation (𝜇+SR) investigation of the crystalline organic radicalcompound 4-(2-benzimidazolyl)-1,2,3,5-dithiadiazolyl (HbimDTDA), in which we demonstrate the hystereticmagnetic switching of the system that takes... Read More about Muon-spin relaxation investigation of magnetic bistability in a crystalline organic radical compound.

Many-body quantum muon effects and quadrupolar coupling in solids (2023)
Journal Article
Gomilšek, M., Pratt, F. L., Cottrell, S. P., Clark, S. J., & Lancaster, T. (2023). Many-body quantum muon effects and quadrupolar coupling in solids. Communications Physics, 6(1), https://doi.org/10.1038/s42005-023-01260-7

Strong quantum zero-point motion (ZPM) of light nuclei and other particles is a crucial aspect of many state-of-the-art quantum materials. However, it has only recently begun to be explored from an ab initio perspective, through several competing app... Read More about Many-body quantum muon effects and quadrupolar coupling in solids.

DFT + μ: Density functional theory for muon site determination (2023)
Journal Article
Blundell, S., & Lancaster, T. (2023). DFT + μ: Density functional theory for muon site determination. Applied Physics Reviews, 10(2), Article 021316. https://doi.org/10.1063/5.0149080

The technique of muon spin rotation (μSR) has emerged in the last few decades as one of the most powerful methods of obtaining local magnetic information. To make the technique fully quantitative, it is necessary to have an accurate estimate of where... Read More about DFT + μ: Density functional theory for muon site determination.