All Outputs (170)

Magnetophonon spectroscopy of Dirac fermion scattering by transverse and longitudinal acoustic phonons in graphene (2019)
Journal Article
Greenaway, M. T., Krishna Kumar, R., Kumaravadivel, P., Geim, A. K., & Eaves, L. (2019). Magnetophonon spectroscopy of Dirac fermion scattering by transverse and longitudinal acoustic phonons in graphene. Physical Review B, 100(15), Article 155120. https://doi.org/10.1103/physrevb.100.155120

Recently observed magnetophonon resonances in the magnetoresistance of graphene are investigated using the Kubo formalism. This analysis provides a quantitative fit to the magnetophonon resonances over a wide range of carrier densities. It demonstrat... Read More about Magnetophonon spectroscopy of Dirac fermion scattering by transverse and longitudinal acoustic phonons in graphene.

Open quantum dynamics induced by light scalar fields (2019)
Journal Article
Burrage, C., Käding, C., Millington, P., & Minár, J. (2019). Open quantum dynamics induced by light scalar fields. Physical Review D, 100(7), Article 076003. https://doi.org/10.1103/PhysRevD.100.076003

We consider the impact of a weakly coupled environment comprising a light scalar field on the open dynamics of a quantum test mass, resulting in a master equation for the test mass that features corrections to the coherent dynamics, as well as decohe... Read More about Open quantum dynamics induced by light scalar fields.

Period-n discrete time crystals and quasicrystals with ultracold bosons (2019)
Journal Article
Pizzi, A., Knolle, J., & Nunnenkamp, A. (2019). Period-n discrete time crystals and quasicrystals with ultracold bosons. Physical Review Letters, 123(15), Article 150601. https://doi.org/10.1103/PhysRevLett.123.150601

We investigate the out-of-equilibrium properties of a system of interacting bosons in a ring lattice. We present a Floquet driving that induces clockwise (counterclockwise) circulation of the particles among the odd (even) sites of the ring which can... Read More about Period-n discrete time crystals and quasicrystals with ultracold bosons.

Nonlinear light diffraction by electromagnetically induced gratings with PT symmetry in a Rydberg atomic gas (2019)
Journal Article
Hang, C., Li, W., & Huang, G. (2019). Nonlinear light diffraction by electromagnetically induced gratings with PT symmetry in a Rydberg atomic gas. Physical Review A, 100(4), 1-13. https://doi.org/10.1103/physreva.100.043807

Understanding and manipulating the non-Hermitian optical property based on coherent atomic gases is of great importance and has attracted much theoretical and experimental attentions. Advancing this study to the nonlinear optics regime is highly desi... Read More about Nonlinear light diffraction by electromagnetically induced gratings with PT symmetry in a Rydberg atomic gas.

Exploring Reionization-era Quasars. III. Discovery of 16 Quasars at 6.4 ≲ z ≲ 6.9 with DESI Legacy Imaging Surveys and the UKIRT Hemisphere Survey and Quasar Luminosity Function at z ∼ 6.7 (2019)
Journal Article
Myers, A. D., Wang, F., Yang, J., Fan, X., Wu, X.-B., Yue, M., Li, J.-T., Bian, F., Jiang, L., Bañados, E., Schindler, J.-T., Findlay, J. R., Davies, F. B., Decarli, R., Farina, E. P., Green, R., Hennawi, J. F., Huang, Y.-H., Mazzuccheli, C., McGreer, I. D., …Nunez, E. H. (2019). Exploring Reionization-era Quasars. III. Discovery of 16 Quasars at 6.4 ≲ z ≲ 6.9 with DESI Legacy Imaging Surveys and the UKIRT Hemisphere Survey and Quasar Luminosity Function at z ∼ 6.7. Astrophysical Journal, 884(1), Article 30. https://doi.org/10.3847/1538-4357/ab2be5

This is the third paper in a series aimed at finding reionization-era quasars with the combination of DESI Legacy imaging Surveys (DELS), the Pan-STARRS1 (PS1) Survey, and near-infrared imaging surveys, such as the UKIRT Hemisphere Survey (UHS), as w... Read More about Exploring Reionization-era Quasars. III. Discovery of 16 Quasars at 6.4 ≲ z ≲ 6.9 with DESI Legacy Imaging Surveys and the UKIRT Hemisphere Survey and Quasar Luminosity Function at z ∼ 6.7.

Galaxy Zoo: probabilistic morphology through Bayesian CNNs and active learning (2019)
Journal Article
Walmsley, M., Smith, L., Lintott, C., Gal, Y., Bamford, S., Dickinson, H., Fortson, L., Kruk, S., Masters, K., Scarlata, C., Simmons, B., Smethurst, R., & Wright, D. (2020). Galaxy Zoo: probabilistic morphology through Bayesian CNNs and active learning. Monthly Notices of the Royal Astronomical Society, 491(2), 1554-1574. https://doi.org/10.1093/mnras/stz2816

We use Bayesian convolutional neural networks and a novel generative model of Galaxy Zoo volunteer responses to infer posteriors for the visual morphology of galaxies. Bayesian CNN can learn from galaxy images with uncertain labels and then, for prev... Read More about Galaxy Zoo: probabilistic morphology through Bayesian CNNs and active learning.

Identification of neurobehavioural symptom groups based on shared brain mechanisms (2019)
Journal Article
Ing, A., Sӓmann, P. G., Chu, C., Tay, N., Biondo, F., Jia, T., Wolfers, T., Desrivières, S., Robert, G., Banaschewski, T., Bokde, A. L., Bromberg, U., Büchel, C., Conrod, P., Fadai, T., Flor, H., Frouin, V., Garavan, H., Spechler, P. A., Gowland, P., …IMAGEN Consortium. (2019). Identification of neurobehavioural symptom groups based on shared brain mechanisms. Nature Human Behaviour, 3, 1306–1318. https://doi.org/10.1038/s41562-019-0738-8

Most psychopathological disorders develop in adolescence. The biological basis for this development is poorly understood. To enhance diagnostic characterization and develop improved targeted interventions, it is critical to identify behavioural sympt... Read More about Identification of neurobehavioural symptom groups based on shared brain mechanisms.

Radio Spectra and Sizes of Atacama Large Millimeter/submillimeter Array-identified Submillimeter Galaxies: Evidence of Age-related Spectral Curvature and Cosmic-Ray Diffusion? (2019)
Journal Article
Thomson, A. P., Smail, I., Swinbank, A. M., Simpson, J. M., Arumugam, V., Stach, S., Murphy, E. J., Rujopakarn, W., Almaini, O., An, F., Blain, A. W., Chen, C. C., Cooke, E. A., Dudzevičiūtė, U., Edge, A. C., Farrah, D., Gullberg, B., Hartley, W., Ibar, E., Maltby, D., …Wardlow, J. L. (2019). Radio Spectra and Sizes of Atacama Large Millimeter/submillimeter Array-identified Submillimeter Galaxies: Evidence of Age-related Spectral Curvature and Cosmic-Ray Diffusion?. Astrophysical Journal, 883(2), Article 204. https://doi.org/10.3847/1538-4357/ab32e7

© 2019 The American Astronomical Society. All rights reserved. We analyze the multifrequency radio spectral properties of 41 6 GHz-detected Atacama Large Millimeter/submillimeter Array (ALMA)-identified, submillimeter galaxies (SMGs), observed at 610... Read More about Radio Spectra and Sizes of Atacama Large Millimeter/submillimeter Array-identified Submillimeter Galaxies: Evidence of Age-related Spectral Curvature and Cosmic-Ray Diffusion?.

Spitzer Catalog of Herschel-selected Ultrared Dusty Star-forming Galaxies (2019)
Journal Article
Ma, J., Cooray, A., Nayyeri, H., Ghotbi, N., Ivison, R., Brown, A., Oteo, I., Duivenvoorden, S., Greenslade, J., Clements, D., Wardlow, J., Battisti, A., da Cunha, E., Ashby, M. L., Perez-Fournon, I., Riechers, D., Oliver, S., Eales, S., Negrello, M., Dye, S., …Valiante, E. (2019). Spitzer Catalog of Herschel-selected Ultrared Dusty Star-forming Galaxies. Astrophysical Journal Supplement, 244(2), 1-19. https://doi.org/10.3847/1538-4365/ab4194

The largest Herschel extragalactic surveys, H-ATLAS and HerMES, have selected a sample of “ultrared” dusty, star-forming galaxies (DSFGs) with rising SPIRE flux densities (S500 > S350 > S250, so-called “500 μm-risers”) as an efficient way for identif... Read More about Spitzer Catalog of Herschel-selected Ultrared Dusty Star-forming Galaxies.

A comprehensive study on the effects of gamma radiation on the physical properties of a two-dimensional WS2 monolayer semiconductor (2019)
Journal Article
Felix, J. F., Da Silva, A. F., Da Silva, S. W., Qu, F., Qiu, B., Ren, J., De Azevedo, W. M., Henini, M., & Huang, C. C. (2020). A comprehensive study on the effects of gamma radiation on the physical properties of a two-dimensional WS2 monolayer semiconductor. Nanoscale Horizons, 5(2), 259-267. https://doi.org/10.1039/c9nh00414a

© 2020 The Royal Society of Chemistry. This article reports the effects of gamma radiation on the structural, optical and magnetic properties of monolayer tungsten disulfide (WS2) grown by a scalable van der Waals epitaxial (VdWE) process on a SiO2 c... Read More about A comprehensive study on the effects of gamma radiation on the physical properties of a two-dimensional WS2 monolayer semiconductor.

Thermal stability of interstitial and substitutional Mn in ferromagnetic (Ga,Mn)As (2019)
Journal Article
Lima, T. A. L., Wahl, U., Costa, A., Augustyns, V., Edmonds, K. W., Gallagher, B. L., Campion, R. P., Araújo, J. P., Correia, J. G., da Silva, M. R., Temst, K., Vantomme, A., & Pereira, L. M. C. (2019). Thermal stability of interstitial and substitutional Mn in ferromagnetic (Ga,Mn)As. Physical Review B, 100(14), Article 144409. https://doi.org/10.1103/physrevb.100.144409

© 2019 American Physical Society. In (Ga,Mn)As, a model dilute magnetic semiconductor, the electric and magnetic properties are strongly influenced by the lattice sites occupied by the Mn atoms. In particular, the highest Curie temperatures are achie... Read More about Thermal stability of interstitial and substitutional Mn in ferromagnetic (Ga,Mn)As.

Numerical Simulation of Critical Dissipative Non-Equilibrium Quantum Systems with an Absorbing State (2019)
Journal Article
Gillman, E., Carollo, F., & Lesanovsky, I. (2019). Numerical Simulation of Critical Dissipative Non-Equilibrium Quantum Systems with an Absorbing State. New Journal of Physics, 21, Article 093064. https://doi.org/10.1088/1367-2630/ab43b0

The simulation of out-of-equilibrium dissipative quantum many body systems is a problem of fundamental interest to a number of fields in physics, ranging from condensed matter to cosmology. For unitary systems, tensor network methods have proved succ... Read More about Numerical Simulation of Critical Dissipative Non-Equilibrium Quantum Systems with an Absorbing State.

Driving massive molecular gas flows in central cluster galaxies with AGN feedback (2019)
Journal Article
Russell, H. R., McNamara, B. R., Fabian, A. C., Nulsen, P. E. J., Combes, F., Edge, A. C., Madar, M., Olivares, V., Salomé, P., & Vantyghem, A. N. (2019). Driving massive molecular gas flows in central cluster galaxies with AGN feedback. Monthly Notices of the Royal Astronomical Society, 490(3), 3025-3045. https://doi.org/10.1093/mnras/stz2719

We present an analysis of new and archival ALMA observations of molecular gas in twelve central cluster galaxies. We examine emerging trends in molecular filament morphology and gas velocities to understand their origins. Molecular gas masses in thes... Read More about Driving massive molecular gas flows in central cluster galaxies with AGN feedback.

Gastrointestinal peptides and small bowel hypomotility are possible causes for fasting and postprandial symptoms in active Crohn’s disease (2019)
Journal Article
Khalaf, A., Hoad, C. L., Menys, A., Nowak, A., Radford, S., Taylor, S. A., Latief, K., Lingaya, M., Falcone, Y., Singh, G., Spiller, R. C., Gowland, P. A., Marciani, L., & Moran, G. W. (2020). Gastrointestinal peptides and small bowel hypomotility are possible causes for fasting and postprandial symptoms in active Crohn’s disease. American Journal of Clinical Nutrition, 111(1), 131–140. https://doi.org/10.1093/ajcn/nqz240

Background
Crohn's disease (CD) patients suffer postprandial aversive symptoms, which can lead to anorexia and malnutrition. Changes in the regulation of gut hormones and gut dysmotility are believed to play a role.

Objectives
This study aimed t... Read More about Gastrointestinal peptides and small bowel hypomotility are possible causes for fasting and postprandial symptoms in active Crohn’s disease.

Raman spectroscopy study of curvature-mediated lipid packing and sorting in single lipid vesicles (2019)
Journal Article
Collard, L., Sinjab, F., & Notingher, I. (2019). Raman spectroscopy study of curvature-mediated lipid packing and sorting in single lipid vesicles. Biophysical Journal, 117(9), 1589-1598. https://doi.org/10.1016/j.bpj.2019.09.020

Cellular plasma membrane deformability and stability is important in a range of biological processes. Changes in local curvature of the membrane affects the lateral movement of lipids, affecting the biophysical properties of the membrane. An integrat... Read More about Raman spectroscopy study of curvature-mediated lipid packing and sorting in single lipid vesicles.

Raman Spectroscopy Study of Curvature-Mediated Lipid Packing and Sorting in Single Lipid Vesicles (2019)
Journal Article
Collard, L., Sinjab, F., & Notingher, I. (2019). Raman Spectroscopy Study of Curvature-Mediated Lipid Packing and Sorting in Single Lipid Vesicles. Biophysical Journal, 117(9), 1589-1598. https://doi.org/10.1016/j.bpj.2019.09.020

Influence functionals, decoherence and conformally coupled scalars (2019)
Journal Article
Burrage, C., Käding, C., Millington, P., & Minář, J. (2019). Influence functionals, decoherence and conformally coupled scalars. Journal of Physics: Conference Series, 1275(1), Article 012041. https://doi.org/10.1088/1742-6596/1275/1/012041

Some of the simplest modifications to general relativity involve the coupling of additional scalar fields to the scalar curvature. By making a Weyl rescaling of the metric, these theories can be mapped to Einstein gravity with the additional scalar f... Read More about Influence functionals, decoherence and conformally coupled scalars.

Effects of Nitrogen Incorporation and Thermal Annealing on the Optical and Spin Properties of GaPN Dilute Nitride Alloys (2019)
Journal Article
Balanta, M., de Oliveira, P., Albalawi, H., Galvão Gobato, Y., Galeti, H., Rodrigues, A., Henini, M., Almosni, S., Robert, C., Balocchi, A., Léger, Y., Carrère, H., Bahri, M., Patriarche, G., Marie, X., & Cornet, C. (2020). Effects of Nitrogen Incorporation and Thermal Annealing on the Optical and Spin Properties of GaPN Dilute Nitride Alloys. Journal of Alloys and Compounds, 814, Article 152233. https://doi.org/10.1016/j.jallcom.2019.152233

Here, we report on the structural, optical and magneto-optical properties of as-grown and thermal annealed GaPN thin films containing different N concentrations grown by Solid-Source Molecular Beam Epitaxy on GaP substrates. A wide range of character... Read More about Effects of Nitrogen Incorporation and Thermal Annealing on the Optical and Spin Properties of GaPN Dilute Nitride Alloys.

Effect of rapid thermal annealing on the electrical properties of dilute GaAsPN based diodes (2019)
Journal Article
Alburaih, H. A., Albalawi, H., & Henini, M. (2019). Effect of rapid thermal annealing on the electrical properties of dilute GaAsPN based diodes. Semiconductor Science and Technology, 34(10), Article 105009. https://doi.org/10.1088/1361-6641/ab3671

© 2019 IOP Publishing Ltd. The effect of rapid thermal annealing on the electrical properties of p++GaP/p-GaAsPN/n+GaP diodes were investigated by using current-voltage (I-V), capacitance-voltage (C-V) and deep level transient spectroscopy (DLTS) tec... Read More about Effect of rapid thermal annealing on the electrical properties of dilute GaAsPN based diodes.

Heterogeneity of inverted calcium ii H:K ratio cluster galaxies (2019)
Journal Article
Pimbblet, K. A., Crossett, J. P., & Fraser-McKelvie, A. (2019). Heterogeneity of inverted calcium ii H:K ratio cluster galaxies. Monthly Notices of the Royal Astronomical Society, 490(1), 455-466. https://doi.org/10.1093/mnras/stz2549

© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society The ratio of calcium II H plus H∊ to calcium II K inverts as a galaxy stellar population moves from being dominated by older stars to possessing mor... Read More about Heterogeneity of inverted calcium ii H:K ratio cluster galaxies.