208 Works

Measuring the disorder of vortex lattices in a Bose-Einstein condensate: supporting data

A. Rakonjac, A. L. Marchant, T. P. Billam, J. L. Helm, M. M. H. Yu, S. A. Gardiner & S. L. Cornish
We report observations of the formation and subsequent decay of a vortex lattice in a Bose-Einstein condensate confined in a hybrid optical-magnetic trap. Vortices are induced by rotating the anharmonic magnetic potential that provides confinement in the horizontal plane. We present simple numerical techniques based on image analysis to detect vortices and analyse their distributions. We use these methods to quantify the amount of order present in the vortex distribution as it transitions from a...

Biaxial Strain Dependence of Jc of a (RE)BCO Coated Conductor at 77 K in Low Fields [Dataset]

Jack R Greenwood
The attached dataset contains all of the data plotted in the figures in the article: Greenwood, Jack R, Surrey, Elizabeth & Hampshire, Damian (2019) 'The Biaxial Strain Dependence of Jc of a (RE)BCO Coated Conductor at 77 K in Low Fields,' IEEE Transactions on Applied Superconductivity (Volume: 29, Issue: 5, August 2019). Please see the README.txt file inside the .zip file for a more detailed description of the contents. Jack Greenwood March 2019 email: jack.r.greenwood@durham.ac.uk

Vikki Bird thesis supplementary data: Structure and dynamics in polystyrene/single-walled carbon nanotube nanocomposites via neutron scattering techniques

Vikki Bird
The dataset archive contains Origin software project files (*.opj). A free viewer to inspect data can be downloaded form http://www.originlab.com

Observation of interference effects via four photon excitation of highly excited Rydberg states in thermal cesium vapor (Data files)

Jorge M. Kondo, Nikola Šibalić, Alex Guttridge, Christopher G. Wade, Natalia R. De Melo, Charles S. Adams & Kevin J. Weatherill
We report on the observation of Electromagnetically Induced Transparency (EIT) and Absorption (EIA) of highly-excited Rydberg states in thermal Cs vapor using a 4-step excitation scheme. The advantage of this 4-step scheme is that the final transition to the Rydberg state has a large dipole moment and one can achieve similar Rabi frequencies to 2 or 3 step excitation schemes using two orders of magnitude less laser power. Consequently each step is driven by a...

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

James Bisset
Data on compliance of Durham publications with RCUK Open Access policy, including APC spend from the RCUK block grant. Year 2: August 1st 2014 to July 31st 2015

Production and characterization of a dual species magneto-optical trap of cesium and ytterbium.

S. L. Kemp, K. L. Butler, R. Fretag, S. A. Hopkins, E. A. Hinds, M. R. Tarbutt & S. L. Cornish
Abstract from article: We describe an apparatus designed to trap and cool a Yb and Cs mixture. The apparatus consists of a dual species effusive oven source, dual species Zeeman slower, magneto-optical traps in a single ultra-high vacuum science chamber, and the associated laser systems. The dual species Zeeman slower is used to load sequentially the two species into their respective traps. Its design is flexible and may be adapted for other experiments with different...

Photoassociation of ultracold CsYb molecules and determination of interspecies scattering lengths [dataset]

Alex Guttridge
This thesis reports the first measurements of the ground state binding energies of CsYb molecules and the scattering lengths of the Cs+Yb system. The knowledge gained from these measurements will be essential for devising the most efficient route for the creation of rovibrational ground state CsYb molecules. CsYb molecules in the rovibrational ground state possess both electric and magnetic dipole moments which opens up a wealth of applications in many areas of physics and chemistry....

UKGN IPSA simulation - Location Awareness in Multi-Agent Control of Distributed Energy Resources - Hutchinson - 2017.zip

Harriet Hutchinson
This zip contains the set of steady-stage voltages for the UK Generic Network, extended for future growth and including embedded generation, simulated using IPSA+ and scripted using Python 2.

Substrate-Independent Epitaxial Growth of the Metal–Organic Framework MOF-508a. [dataset]

Matthew Wilson
Plasmachemical deposition is a substrate-independent method for the conformal surface functionalization of solid substrates. Structurally well-defined pulsed plasma deposited poly(1-allylimidazole) layers provide surface imidazole linker groups for the directed liquid-phase epitaxial (layer-by-layer) growth of metal–organic frameworks (MOFs) at room temperature. For the case of microporous [Zn (benzene-1,4-dicarboxylate)-(4,4′-bipyridine)0.5] (MOF-508), the MOF-508a polymorph containing two interpenetrating crystal lattice frameworks undergoes orientated Volmer–Weber growth and displays CO2 gas capture behavior at atmospheric concentrations in proportion to the number...

East Anglia and Mease Crop Data for Building Land Use Models

Matthias Troffaes, Lewis Paton, Nigel Boatman, Muhamed Hussein & Andy Hart
For full details about where the data was obtained and how it was used, refer to description.txt included with the zip file along with the data. The zip file also contains source code for statistical analysis of the data.

Torso rotation and hand position modulation functional MRI [dataset]

Jason Connolly
Please download this dataset from DU Box as follows: https://durhamuniversity.box.com/s/woibn9xp2q00vbn6p20h2f1eeckv72j3 Note: Login is *not* required.

Direct measurement of excited-state dipole matrix elements using electromagnetically induced transparency in the hyperfine Paschen-Back regime

Daniel J Whiting, James Keaveney, Charles S Adams & Ifan G Hughes
The folder "transmission-spectra" contains the raw data files (in CSV format) for the transmission signal of the probe beam along with files named etalon and reference which were used in the frequency calibration of the transmission spectra. The folder "beam-profiles" contains the raw images of the probe and control beams in BMP format.

Center-of-mass motion as a sensitive convergence test for variational multi-mode quantum dynamics

Jayson Cosme, Christoph Weiss & Joachim Brand
Supporting data for the publication: http://arxiv.org/abs/1510.07845 "Center-of-mass motion as a sensitive convergence test for variational multi-mode quantum dynamics", authors: Jayson G. Cosme, Christoph Weiss and Joachim Brand.

Metadata for 'Long lifetime hole traps at grain boundaries in CdTe thin-film photovoltaics'

Budhika Mendis
A novel time-resolved cathodoluminescence method, where a pulsed electron beam is generated via the photoelectric effect, is used to probe individual CdTe grain boundaries. Excitons have a short lifetime (100 ps) within the grains and are rapidly quenched at the grain boundary. However, a ~47 meV shallow acceptor, believed to be due to oxygen, can act as a long lifetime hole trap, even at the grain boundaries where their concentration is higher. This provides direct...

Data from "Spectroscopic detection of atom-surface interactions in an atomic vapour layer with nanoscale thickness"

K.A. Whittaker, J. Keaveney, A. Sargsyan, D. Sarkisyan, I.G. Hughes & C.S. Adams
Abstract from article: We measure the resonance line shape of atomic vapor layers with nanoscale thickness confined between two sapphire windows. The measurement is performed by scanning a probe laser through resonance and collecting the scattered light. The line shape is dominated by the effects of Dicke narrowing, self-broadening, and atom-surface interactions. By fitting the measured line shape to a simple model we discuss the possibility to extract information about the atom-surface interaction.

Finding spin-glass ground states using quantum walks [dataset]

Adam Callison
This file contains the numerical data supporting the numerical data supporting arXiv:1903.05003, the abstract used here is the abstract of that paper.

Research data for "Testing the limits of NMR crystallography: the case of caffeine–citric acid hydrate"

Hannah E. Kerr
The crystal structure of a new 1:2 caffeine-citric acid hydrate cocrystal is presented. The caffeine molecules are disordered over two positions, with the nature of the disorder confirmed to be static by 13C solid-state NMR. NMR linewidths in statically disordered systems reflect the distribution of local chemical environments, and this study investigates whether the disorder contribution to 13C linewidths can be predicted computationally. The limits of NMR crystallography calculations using density functional theory are tested...

Data for "Dressed-state electromagnetically induced transparency for light storage in uniform phase spin-waves"

Nikola Šibalić
We present, experimentally and theoretically, a scheme for dressed-state electromagnetically induced transparency (EIT) in a three-step cascade system where a four-level system is mapped into an effective three-level system. Theoretical analysis reveals that the scheme provides coherent state control via adiabatic following and provides a generalized protocol for light storage in uniform phase spin-waves that are insensitive to motional dephasing. The three-step driving enables a number of other features including spatial selectivity of the excitation...

Data from: "Intrinsic Optical Bistability in a Strongly-Driven Rydberg Ensemble"

Natalia R. De Melo, Nikola Šibalić, Christopher G. Wade, Jorge M. Kondo, Charles S. Adams & Kevin J. Weatherill

Supporting Data for Pharmaceutical Polymorph Control in a Drug-Mimetic Supramolecular Gel

Jonathan A. Foster, Krishna K. Damodaran, Antoine Maurin, Graeme M. Day, Hugh P. G. Thompson, Gary S. Cameron, Jenifer Cuestra & Jonathan W. Steed
We report the synthesis of a bis(urea) gelator designed to specifically mimic the chemical structure of the highly polymorphic drug substance ROY. Crystallization of ROY from toluene gels of this gelator results in the formation of the metastable red form instead of the thermodynamic yellow polymorph. In contrast, all other gels and solution control experimetns give the yellow form. Conformational and crystal structure prediction methods have been used to propose the structure of the gel...

Kondo screening in a charge-insulating spinon metal [dataset]

Matjaž Gomilšek, Rok Žitko, Martin Klanjšek, Martin Pregelj, Christopher Baines, Yuesheng Li, Qingming Zhang & Andrej Zorko
The Kondo effect, an eminent manifestation of many-body physics in condensed matter, is traditionally explained as exchange scattering of conduction electrons on a spinful impurity in a metal. The resulting screening of the impurity's local moment by the electron Fermi sea is characterized by a Kondo temperature TK, below which the system enters a strongly-coupled regime. In recent years, this effect has found its realizations beyond the bulk-metal paradigm in many other conduction-electron systems, such...

Grand-canonical condensate fluctuations in weakly interacting Bose-Einstein condensates of light: Supporting data

Christoph Weiss & Jacques Tempere
Supporting data for the publication http://arxiv.org/abs/1511.03064 (Authors Christoph Weiss and Jacques Tempere)

Research data for "Nanoscale depth-resolved polymer dynamics probed by the implantation of low energy muons"

Tom Lancaster, Francis Pratt, Peter Baker, Stephen Blundell, Thomas Prokscha, Elvezio Morenzoni, Andreas Suter & Hazel Assender
The low energy muon (LEM) technique has been used to probe local changes in the dynamical spectrum of thin film polymer samples taking place as a function of the temperature and the implantation depth below the free surface. The studies have been made on samples of polydimethylsiloxane (PDMS) and polybutadiene (PB) using the transverse magnetic field (TF) configuration and diamagnetic probe muons. In PDMS evidence is found for suppression of the glass transition temperature near...

Dynamic Morphologies and Stability of Droplet Interface Bilayers [dataset and software]

Benjamin Guiselin, Jack O Law, Buddhapriya Chakrabarti & Halim Kusumaatmaja
We develop a theoretical framework for understanding dynamic morphologies and stability of droplet interface bilayers (DIBs), accounting for lipid kinetics in the monolayers and bilayer, and droplet evaporation due to imbalance between osmotic and Laplace pressures. Our theory quantitatively describes distinct pathways observed in experiments when DIBs become unstable. We find that when the timescale for lipid desorption is slow compared to droplet evaporation, the lipid bilayer will grow and the droplets approach a hemispherical...

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