Searched for: author%3A%22Dalgliesh%2C+R.%22
(1 - 10 of 10)
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Kuhn, S. J. (author), McKay, S. (author), Shen, J. (author), Geerits, N. (author), Dalgliesh, R. M. (author), Dees, E. (author), Irfan, A. (author), Li, F. (author), Parnell, S.R. (author)
The development of direct probes of entanglement is integral to the rapidly expanding field of complex quantum materials. Here we test the robustness of entangled neutrons as a quantum probe by measuring the Clauser-Horne-Shimony-Holt contextuality witness while varying the beam properties. Specifically, we show that the mode entanglement of...
journal article 2021
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Navarro Lopez, A. (author), Ioannidou, C. (author), van der Wal, E.M. (author), Arechabaleta Guenechea, Z. (author), van den Oever, R. (author), Verleg, M.N. (author), Dalgliesh, R. M. (author), Sykora, J. (author), Akeroyd, F. A. (author), Geerlofs, N. (author), Sietsma, J. (author), Pappas, C. (author), van Well, A.A. (author), Offerman, S.E. (author)
Interphase precipitation occurring during solid-state phase transformations in micro-alloyed steels is generally studied through transmission electron microscopy, atom probe tomography, and ex situ measurements of Small-Angle Neutron Scattering (SANS). The advantage of SANS over the other two characterization techniques is that SANS allows...
journal article 2020
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Parnell, S.R. (author), van Well, A.A. (author), Plomp, J. (author), Dalgliesh, R. M. (author), Steinke, N. J. (author), Cooper, J. F.K. (author), Geerits, N. (author), Steffen, K. E. (author), Snow, W. M. (author)
Various theories beyond the Standard Model predict new particles with masses in the sub-eV range with very weak couplings to ordinary matter which can possess spin-dependent couplings to electrons and nucleons. We report null results of a search for possible exotic spin-dependent couplings of the neutron which could be induced by the exchange...
journal article 2020
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Geerits, N. (author), Parnell, S.R. (author), Thijs, M.A. (author), van Well, A.A. (author), Franz, C. (author), Washington, A. L. (author), Raspino, D. (author), Dalgliesh, R. M. (author), Plomp, J. (author)
A time-of-flight modulation of intensity by zero effort spectrometer mode has been developed for the Larmor instrument at the ISIS pulsed neutron source. The instrument utilizes resonant spin flippers that employ electromagnets with pole shoes, allowing the flippers to operate at frequencies up to 3 MHz. Tests were conducted at modulation...
journal article 2019
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Bannenberg, L.J. (author), Sadykov, R. (author), Dalgliesh, R. M. (author), Goodway, C. (author), Schlagel, D. L. (author), Lograsso, T. A. (author), Falus, P. (author), Lelièvre-Berna, E. (author), Pappas, C. (author)
The archetype cubic chiral magnet MnSi is home to some of the most fascinating states in condensed matter, such as skyrmions and a non-Fermi-liquid behavior in conjunction with a topological Hall effect under hydrostatic pressure. Using small angle neutron scattering, we study the evolution of the helimagnetic, conical, and skyrmionic...
journal article 2019
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Parnell, S.R. (author), Dalgliesh, R. M. (author), Steinke, N. J. (author), Plomp, J. (author), van Well, A.A. (author)
RF coils have been routinely used for Larmor labelling on the Offspec instrument at ISIS. These coils encode directional information via the neutron polarization using a series of parallelogram-shaped pole shoes which can be tuned to different angles with an RF gradient flipper in the centre of each magnet. We report on measurements of the...
journal article 2018
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Bannenberg, L.J. (author), Qian, F. (author), Dalgliesh, R. M. (author), Martin, N (author), Chaboussant, G. (author), Schmidt, M (author), Schlagel, D. L. (author), Lograsso, T. A. (author), Wilhelm, H (author), Pappas, C. (author)
Magnetic skyrmions are nanosized topologically protected spin textures with particlelike properties. They can form lattices perpendicular to the magnetic field, and the orientation of these skyrmion lattices with respect to the crystallographic lattice is governed by spin-orbit coupling. By performing small-angle neutron scattering measurements,...
journal article 2017
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Bannenberg, L.J. (author), Kakurai, K. (author), Falus, P. (author), Lelievre-Berna, E. (author), Dalgliesh, R. (author), Dewhurst, C.D. (author), Qian, F. (author), Onose, Y. (author), Endoh, Y. (author), Tokura, Y. (author), Pappas, C. (author)
We present a comprehensive Small Angle Neutron Scattering (SANS) and Neutron Spin Echo Spectroscopy (NSE) study of the structural and dynamical aspects of the helimagnetic transition in Fe<sub>1-x</sub>Co<sub>x</sub>Si with x = 0.30. In contrast to the sharp transition observed in the archetype chiral magnet MnSi, the transition in Fe<sub>1-x<...
journal article 2017
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Pappas, C. (author), Bannenberg, L.J. (author), Lelièvre-Berna, E. (author), Qian, F. (author), Dewhurst, C. D. (author), Dalgliesh, R. M. (author), Schlagel, D. L. (author), Lograsso, T. A. (author), Falus, P (author)
The reference chiral helimagnet MnSi is the first system where Skyrmion lattice correlations have been reported. At a zero magnetic field the transition at TC to the helimagnetic state is of first order. Above TC, in a region dominated by precursor phenomena, neutron scattering shows the buildup of strong chiral fluctuating correlations over...
journal article 2017
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Ashkar, R. (author), Schaich, W.L. (author), De Haan, V.O. (author), Van Well, A.A. (author), Dalgliesh, R. (author), Plomp, J. (author), Pynn, R. (author)
Neutron spin-echo resolved grazing incidence scattering (SERGIS) measurements performed on a silicon diffraction grating with a rectangular profile were shown in our previous publications to be well explained by dynamical theory calculations. The theory is based on a Bloch wave expansion of the neutron wavefunction in the periodic layer of the...
journal article 2011
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