Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Bewley Robert"'
Publikováno v:
EPJ Web of Conferences, Vol 286, p 03002 (2023)
eMAP is a new proposed high flux medium-resolution time-of-flight engineering diffractometer that will be built at ISIS Target Station 2. Monte Carlo simulations were performed to optimise the neutron guide to maximise brilliance transfer. eMAP featu
Externí odkaz:
https://doaj.org/article/992a42e2e8884007912330ed946bdba7
Autor:
Nemkovski Kirill, Bewley Robert, García Sakai Victoria, Nilsen Gøran Jan, Perrichon Adrien, Silverwood Ian
Publikováno v:
EPJ Web of Conferences, Vol 272, p 02004 (2022)
SHERPA is a proposed quasielastic neutron spectrometer with polarisation analysis, intended to replace the ageing Iris instrument at the ISIS neutron and muon source. In this paper we present a concept of the instrument along with Monte-Carlo simulat
Externí odkaz:
https://doaj.org/article/2f532f24060846089b6e613156649678
Autor:
Woodland, Leonie, Macdougal, David, Cabrera, Ivelisse M., Thompson, Jordan D., Prabhakaran, D., Bewley, Robert I., Coldea, Radu
Publikováno v:
Phys. Rev. B 108, 184416 (2023)
The Ising chain realizes the fundamental paradigm of spin fractionalization, where locally flipping a spin creates two domain walls (spinons) that can separate apart at no energy cost. In a quasi-one-dimensional system, the mean-field effects of the
Externí odkaz:
http://arxiv.org/abs/2308.07699
Autor:
Le, Manh Duc, Guidi, Tatiana, Bewley, Robert I., Stewart, J. Ross, Schooneveld, Erik M., Raspino, Davide, Pooley, Daniel E., Boxall, Jonathan, Gascoyne, Kelvin F., Rhodes, Nigel J., Moorby, Simon R., Templeman, David J., Afford, Luke C., Waller, Simon P., Zacek, Daniel, Shaw, Rebecca C. R.
Publikováno v:
Nucl. Instrum. Methods Phys. Res. A 1056 (2023) 168646
The MARI direct geometry time-of-flight neutron spectrometer at ISIS has been upgraded with an $m=3$ supermirror guide and new detector electronics. This has resulted in a flux gain of ${\approx}6{\times}$ at $\lambda=1.8$ {\AA}, and improvements on
Externí odkaz:
http://arxiv.org/abs/2211.07821
Autor:
Ding, Gaofeng, Wo, Hongliang, Luo, Rui Leonard, Gu, Yimeng, Gu, Yiqing, Bewley, Robert, Chen, Gang, Zhao, Jun
Publikováno v:
PhysRevB.107.L100411 (2023)
The rare-earth triangular-lattice chalcogenide is a great platform for exploring both spin liquids and novel magnetic orders with anisotropic spin interactions and magnetic frustrations. Here, we report the thermodynamic and neutron scattering measur
Externí odkaz:
http://arxiv.org/abs/2210.15867
Autor:
Toppozini Laura, Garcia-Sakai Victoria, Bewley Robert, Dalgliesh Robert, Perring Toby, Rheinstädter Maikel C.
Publikováno v:
EPJ Web of Conferences, Vol 83, p 02019 (2015)
For decades, quasi-elastic neutron scattering has been the prime tool for studying molecular diffusion in membranes over relevant nanometer distances. These experiments are essential to our current understanding of molecular dynamics of lipids, prote
Externí odkaz:
https://doaj.org/article/0c6312a92c1e4695970d50b132de12b9
Autor:
Jacobsen, Henrik, Florea, Ovidiu, Lhotel, Elsa, Lefmann, Kim, Petrenko, Oleg, Knee, Chris S., Seydel, Tilo, Henry, Paul F., Bewley, Robert, Voneshen, David, Wildes, Andrew, Nilsen, Gøran, Deen, Pascale P.
Publikováno v:
Phys. Rev. B 104, 054440 (2021)
We present an experimental study of the magnetic structure and dynamics of two frustrated hyperkagome compounds, Gd3Ga5O12 and Gd3Al5O12. It has previously been shown that Gd3Ga5O12 exhibits long-range correlations of multipolar directors, that are f
Externí odkaz:
http://arxiv.org/abs/2104.05987
Autor:
Qin, Yayuan, Shen, Yao, Liu, Changle, Wo, Hongliang, Gao, Yonghao, Feng, Yu, Zhang, Xiaowen, Ding, Gaofeng, Gu, Yiqing, Wang, Qisi, Shen, Shoudong, Walker, Helen C., Bewley, Robert, Xu, Jianhui, Boehm, Martin, Steffens, Paul, Ohira-Kawamura, Seiko, Murai, Naoki, Schneidewind, Astrid, Tong, Xin, Chen, Gang, Zhao, Jun
Publikováno v:
Science Bulletin 67, 38-44 (2022)
We report thermodynamic and neutron scattering measurements of the triangular-lattice quantum Ising magnet TmMgGaO 4 in longitudinal magnetic fields. Our experiments reveal a quasi-plateau state induced by quantum fluctuations. This state exhibits an
Externí odkaz:
http://arxiv.org/abs/2011.09376
Autor:
Macdougal, David, Williams, Stephanie, Prabhakaran, Dharmalingam, Bewley, Robert I., Voneshen, David J., Coldea, Radu
Publikováno v:
Phys. Rev. B 102, 064421 (2020)
We explore the magnetic excitations of the spin-1/2 triangular antiferromagnet Ba3CoSb2O9 in its 120 degree ordered phase using single-crystal high-resolution inelastic neutron scattering. Sharp magnons with no decay are observed throughout reciproca
Externí odkaz:
http://arxiv.org/abs/2006.15554
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