39 Works

Magnetic trapping of SH radicals

Jack Eardley
Data showing magnetic trapping of SH radicals, produced via a process we call photostop. H2S in a skimmed, supersonic molecular beam was photodissociated to produce SH inside a 330 mK deep static magnetic trap. The molecular beam speed was controlled by the mixing ratio of H2S in Kr to match the recoil velocity of the SH photofragments such that some SH radicals were produced with near-zero laboratory-frame velocity. The density of SH radicals in the...

Durham RCUK [Green] Open Access Data Year 4 (Apr2016-Mar2017)

Frederick W F Foulds
NOTE: In early 2017, RCUK changed their 'compliance reporting' year to match their 'financial reporting' year, so that both reflected the period April 1st to March 31st each year. This means that part of this Year 4 data will overlap with the previous year 3 compliance data.

SIPG fracture data supporting: A quasi-static discontinuous Galerkin configurational force fracture propagation method for brittle materials [IJNME (2017)]

R.E. Bird, W.M. Coombs & S. Giani
Abstract from paper: This paper presents a framework for r-adaptive quasi-static configurational force (CF) brittle crack propagation, cast within a discontinuous Galerkin (DG) symmetric interior penalty (SIPG) finite element scheme. Cracks are propagated in discrete steps, with a staggered algorithm, along element interfaces which align themselves with the predicted crack propagation direction. The key novelty of the work is the exploitation of the DG face stiffness terms existing along element interfaces to propagate a crack...

Field imaging near to the surface of terahertz reflective optics using a vector network analyzer

Maryam Hajji
Dataset contains S-parameter measurements recorded with Vector Network Analyser Agilent N5224A. Data are stored as a Matlab v5 (*.mat) file. Complex values of the measured S-parameter are stored in a 101x101x11 (X*Y*Z) matrix.

Exchange constants in molecule-based magnets derived from density functional methods

Tom Lancaster, Stewart Clark & Iori Thomas
Cu(pyz)(NO3)2 is a quasi-one-dimensional molecular antiferromagnet that exhibits three-dimensional long-range magnetic order below T N = 110 mK due to the presence of weak interchain exchange couplings. Here, we compare calculations of the three largest exchange coupling constants in this system using two techniques based on plane-wave basis-set density functional theory: (i) a dimer fragment approach and (ii) an approach using periodic boundary conditions. The calculated values of the large intrachain coupling constant are found...

Spin-orbit coupled interferometry with ring–trapped Bose–Einstein condensates: supporting data

John L. Helm, Thomas P. Billam, Ana Rakonjac, Simon L. Cornish & Simon A. Gardiner
We propose a method of atom-interferometry using a spinor Bose–Einstein (BEC) and the well-established experimental technique of time-varying magnetic fields as a coherent beam-splitter. Our protocol creates long-lived superpositional counterflow states, which are of fundamental interest and can be made sensitive to both the Sagnac effect and magnetic fields on the sub micro-Gauss scale. We split a ring-trapped condensate, initially in the m f = 0 hyperfine sub-level, into superpositions of both internal spin state...

Durham RCUK Open Access Data Year 4 (Apr2016-Mar2017)

James Bisset, Sarah Hyland & Frederick W. F. Foulds
NOTE: In early 2017, RCUK changed their 'compliance reporting' year to match their 'financial reporting' year, so that both reflected the period April 1st to March 31st each year. This means that part of this Year 4 data will overlap with the previous year 3 compliance data.

Probing interactions of thermal Sr Rydberg atoms using simultaneous optical and ion detection - Supporting Data

Ryan K. Hanley, Alistair D. Bounds, Paul Huillery, Niamh C. Keegan, Riccardo Faoro, Elizabeth M. Bridge, Kevin J. Weatherill & Matthew P.A. Jones
We demonstrate a method for probing interaction effects in a thermal beam of strontium atoms using simultaneous measurements of Rydberg EIT and spontaneously created ions or electrons. We present a Doppler-averaged optical Bloch equation model that reproduces the optical signals and allows us to connect the optical coherences and the populations. We use this to determine that the spontaneous ionization process in our system occurs due to collisions between Rydberg and ground state atoms in...

Correlated magnetic oxides studied using muon-spin spectroscopy: Supporting data

Robert Williams & Tom Lancaster
Supporting data for the PhD thesis of R C Williams: "Correlated magnetic oxides studied using muon-spin spectroscopy"

Radiation trapping in a dense cold Rydberg gas: Supporting data

Daniel P. Sadler, Elizabeth M. Bridge, Danielle Boddy, Alistair D. Bounds, Niamh C. Keegan, Graham Lochead, Matthew P. A. Jones & Beatriz Olmos
Data files can be opened in Matlab. The authors used Matlab R2015a. If you do not have access to Matlab, Mathematica, Scilab (freeware) or similar applications should be able to open the files.

Data and Software for Degiacomi et al, Structure, 2017

Matteo T. Degiacomi, Justin L. P. Benesch, Carla Schmidt & Andrew J. Baldwin
Data and Software supporting Degiacomi et al study about a new method and associated software, DynamXL, that accommodates intrinsic protein dynamics in the modelling of cross-linking data. This approach substantially reduces error rates, leading to higher confidence in structure assessment and improved protein-protein docking.

Data for Interspecies thermalization in an ultracold mixture of Cs and Yb in an optical trap

Alex Guttridge, Stephen Hopkins, Stefan Kemp, Matthew Frye, Jeremy Hutson & Simon Cornish
Data files used in "Interspecies thermalization in an ultracold mixture of Cs and Yb in an optical trap". For more information refer to the README.txt file included in data zip file.

iGIMP: An implicit generalised interpolation material point method for large deformations (figure data)

T.J. Charlton, W.M. Coombs & C.E. Augarde
The Material Point Method (MPM) uses a combined Eulerian-Lagrangian approach to solve problems involving large deformations. A problem domain is discretised as material points which are advected on a background grid. Problems are encountered with the original MPM when material points cross between grid cells, and this has been tackled by the development of the Generalised Interpolation MPM, where material points' domains of influence extend beyond the currently occupied grid cell. In this paper, the...

Supporting data: Four-wave mixing in the hyperfine Paschen-Back regime

Renju Mathew, Daniel J. Whiting, James Keaveney, Charles S Adams & Ifan G Hughes
We present an experimental study of seeded four-wave mixing (4WM) using a diamond excitation scheme (with states from the 5S1/2, 5P1/2, 5P3/2 and 5D1/2 terms) in a thermal vapour of 87Rb atoms. We investigate the 4WM spectra under the application of a strong magnetic field (0.6 T). The Zeeman interaction is strong enough to realise the hyperfine Paschen-Back regime, which has the effect of separating the optical transitions by more than the Doppler width, thereby...

Durham RCUK [Green] Open Access Data Year 2 (Aug2014-Jul2015)

Frederick W. F. Foulds
Data listing all articles and conference papers published by a Durham author acknowledging RCUK funding between August 2014 and July 2015, which met the RCUK Open Access policy requirements via the Green OA route.

Data Supporting 'Understanding the role of damping and Dzyaloshinskii-Moriya interaction on dynamic domain wall behaviour in platinum-ferromagnet nanowires', Scientific Reports 7: 4569 (2017)

A.T. Hindmarch
(Abstract from article) Heavy metal layers, exemplified by Pt, are known to play a significant role in the magnetization behaviour of thin-film ferromagnets by three distinct mechanisms that can each contribute to the reversal process. These include modifying the local magnetization state via an interfacial Dzyaloshinskii-Moriya interaction (IDMI), enhancement of the damping, via d-d hybridisation and spin-pumping across the interface, and the mediation of the magnetization switching, with the flow of current through a system,...

Supporting Data: Nanometre-scale optical property fluctuations in Cu2ZnSnS4 revealed by low temperature cathodoluminescence

Budhika Mendis
Band tailing is a major contributing factor to the large open circuit voltage (Voc) deficit that is currently limiting Cu2ZnSnS4 (CZTS) photovoltaic devices. It occurs in highly doped, highly compensated semiconductors and gives rise to a non-uniform electronic band structure. Here we report spatially resolved fluctuations in CZTS optical properties using low temperature cathodoluminescence (CL) in a scanning electron microscope (SEM). Principal component analysis reveals three CL peaks whose relative intensity vary across domains ~100...

(C6F6)n- and (C6F6)I- Study Complete Dataset

Joshua Rogers & Cate Anstoter
The primary electron attachment process in electron driven chemistry represents one of the most fundamental chemical transformations with wide-ranging importance in science and technology. However, the mechanistic detail of the seemingly simple reaction of an electron and a neutral to form an anion remains poorly understood, particularly at very low electron energies. Here, time-resolved photoelectron imaging was used to probe the electron attachment process to a non-polar molecule using time-resolved methods. An initially populated diffuse...

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