Outputs (120)

Local magnetism, magnetic order and spin freezing in the "nonmetallic metal" FeCrAs (2019)
Journal Article
Huddart, B., Birch, M. T., Pratt, F., Blundell, S., Porter, D. G., Clark, S. J., …Lancaster, T. (2019). Local magnetism, magnetic order and spin freezing in the "nonmetallic metal" FeCrAs. Journal of Physics: Condensed Matter, 31(28), Article 285803. https://doi.org/10.1088/1361-648x/ab151f

We present the results of x-ray scattering and muon-spin relaxation (SR) measurements on the iron-pnictide compound FeCrAs. Polarized non-resonant magnetic x-ray scattering results reveal the 120° periodicity expected from the suggested three-fold sy... Read More about Local magnetism, magnetic order and spin freezing in the "nonmetallic metal" FeCrAs.

The Routledge Handbook of Emergence (2019)
Book
Gibb, S., Hendry, R., & Lancaster, T. (2019). The Routledge Handbook of Emergence. Taylor and Francis. https://doi.org/10.4324/9781315675213

Emergence and topological order in classical and quantum systems (2019)
Journal Article
McLeish, T., Pexton, M., & Lancaster, T. (2019). Emergence and topological order in classical and quantum systems. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics, 66, 155-169. https://doi.org/10.1016/j.shpsb.2019.02.006

There has been growing interest in systems in condensed matter physics as a potential source of examples of both epistemic and ontological emergence. One of these case studies is the fractional quantum Hall state (FQHS). In the FQHS a system of elect... Read More about Emergence and topological order in classical and quantum systems.

Unconventional Field-Induced Spin Gap in an S=1/2 Chiral Staggered Chain (2019)
Journal Article
Liu, J., Kittaka, S., Johnson, R., Lancaster, T., Singleton, J., Sakakibara, T., Kohama, Y., van Tol, J., Ardavan, A., Williams, B., Blundell, S., Manson, Z., Manson, J., & Goddard, P. (2019). Unconventional Field-Induced Spin Gap in an S=1/2 Chiral Staggered Chain. Physical Review Letters, 122(5), Article 057207. https://doi.org/10.1103/physrevlett.122.057207

We investigate the low-temperature magnetic properties of the molecule-based chiral spin chain ½CuðpymÞðH2OÞ4SiF6 · H2O (pym ¼ pyrimidine). Electron-spin resonance, magnetometry and heat capacity measurements reveal the presence of staggered g tensor... Read More about Unconventional Field-Induced Spin Gap in an S=1/2 Chiral Staggered Chain.

Spin Jahn-Teller antiferromagnetism in CoTi2O5 (2019)
Journal Article
Kirschner, F. K., Johnson, R. D., Lang, F., Khalyavin, D. D., Manuel, P., Lancaster, T., Prabhakaran, D., & Blundell, S. J. (2019). Spin Jahn-Teller antiferromagnetism in CoTi2O5. Physical Review B, 99(6), Article 064403. https://doi.org/10.1103/physrevb.99.064403

We have used neutron powder diffraction to solve the magnetic structure of orthorhombic CoTi2O5, showing that the long-range ordered state below 26 K identified in our muon-spin rotation experiments is antiferromagnetic with propagation vector k = (±... Read More about Spin Jahn-Teller antiferromagnetism in CoTi2O5.

Spin dynamics and field-induced magnetic phase transition in the honeycomb Kitaev magnet α−Li2IrO3 (2019)
Journal Article
Choi, S., Manni, S., Singleton, J., Topping, C., Lancaster, T., Blundell, S., …Coldea, R. (2019). Spin dynamics and field-induced magnetic phase transition in the honeycomb Kitaev magnet α−Li2IrO3. Physical Review B, 99(5), Article 054426. https://doi.org/10.1103/physrevb.99.054426

The layered honeycomb iridate α-Li2IrO3 displays an incommensurate magnetic structure with counterrotating moments on nearest-neighbor sites, proposed to be stabilized by strongly frustrated anisotropic Kitaev interactions between spin-orbit entangle... Read More about Spin dynamics and field-induced magnetic phase transition in the honeycomb Kitaev magnet α−Li2IrO3.

Magnetic order and enhanced exchange in the quasi-one-dimensional molecule-based antiferromagnet Cu(NO3)2(pyz)3 (2018)
Journal Article
Huddart, B., Brambleby, J., Lancaster, T., Goddard, P., Xiao, F., Blundell, S. J., Pratt, F. L., Singleton, J., Macchi, P., Scatena, R., Barton, A., & Manson, J. L. (2019). Magnetic order and enhanced exchange in the quasi-one-dimensional molecule-based antiferromagnet Cu(NO3)2(pyz)3. Physical Chemistry Chemical Physics, 21(3), 1014-1018. https://doi.org/10.1039/c8cp07160h

The quasi-one-dimensional molecule-based Heisenberg antiferromagnet Cu(NO3)2(pyz)3 has an intrachain coupling J = 13.7(1) K (Image ID:c8cp07160h-t1.gif) and exhibits a state of long-range magnetic order below TN = 0.105(1) K. The ratio of interchain... Read More about Magnetic order and enhanced exchange in the quasi-one-dimensional molecule-based antiferromagnet Cu(NO3)2(pyz)3.

Proposal for a micromagnetic standard problem for materials with Dzyaloshinskii–Moriya interaction (2018)
Journal Article
Cortés-Ortuño, D., Beg, M., Nehruji, V., Breth, L., Pepper, R., Kluyver, T., Downing, G., Hesjedal, T., Hatton, P., Lancaster, T., Hertel, R., Hovorka, O., & Fangohr, H. (2018). Proposal for a micromagnetic standard problem for materials with Dzyaloshinskii–Moriya interaction. New Journal of Physics, 20(11), Article 113015. https://doi.org/10.1088/1367-2630/aaea1c

Understanding the role of the Dzyaloshinskii–Moriya interaction (DMI) for the formation of helimagnetic order, as well as the emergence of skyrmions in magnetic systems that lack inversion symmetry, has found increasing interest due to the significan... Read More about Proposal for a micromagnetic standard problem for materials with Dzyaloshinskii–Moriya interaction.

Origin of skyrmion lattice phase splitting in Zn-substituted Cu2OSeO3 (2018)
Journal Article
Štefančič, A., Moody, S., Hicken, T., Birch, M., Balakrishnan, G., Barnett, S., Crisanti, M., Evans, J., Holt, S., Franke, K., Hatton, P., Huddart, B., Lees, M., Pratt, F., Tang, C., Wilson, M., Xiao, F., & Lancaster, T. (2018). Origin of skyrmion lattice phase splitting in Zn-substituted Cu2OSeO3. Physical Review Materials, 2(11), Article 111402(R). https://doi.org/10.1103/physrevmaterials.2.111402

We present an investigation into the structural and magnetic properties of Zn-substituted Cu2OSeO3, a system in which the skyrmion lattice (SkL) phase in the magnetic field–temperature phase diagram was previously seen to split as a function of incre... Read More about Origin of skyrmion lattice phase splitting in Zn-substituted Cu2OSeO3.

Quantum magnetism in molecular spin ladders probed with muon-spin spectroscopy (2018)
Journal Article
Lancaster, T., Xiao, F., Huddart, B., Williams, R., Pratt, F., Blundell, S., Clark, S., Scheuermann, R., Goko, T., Ward, S., Manson, J., Rüegg, C., & Krämer, K. (2018). Quantum magnetism in molecular spin ladders probed with muon-spin spectroscopy. New Journal of Physics, 20(10), Article 103002. https://doi.org/10.1088/1367-2630/aae21a

We present the results of muon-spin spectroscopy (μ +SR) measurements on the molecular spin ladder system (Hpip)2CuBr4(1−x)Cl4x , [Hpip = (C5H12N)]. Using transverse field μ +SR we are able to identify characteristic behaviour in each of the regions... Read More about Quantum magnetism in molecular spin ladders probed with muon-spin spectroscopy.