All Outputs (130)

Intramolecular bonds resolved on a semiconductor surface (2014)
Journal Article
Sweetman, A., Jarvis, S. P., Rahe, P., Champness, N. R., Kantorovich, L., & Moriarty, P. (2014). Intramolecular bonds resolved on a semiconductor surface. Physical review B: Condensed matter and materials physics, 90(16), https://doi.org/10.1103/PhysRevB.90.165425

Noncontact atomic force microscopy (NC-AFM) is now routinely capable of obtaining submolecular resolution, readily resolving the carbon backbone structure of planar organic molecules adsorbed on metal substrates. Here we show that the same resolution... Read More about Intramolecular bonds resolved on a semiconductor surface.

Vacuum energy sequestering: The framework and its cosmological consequences (2014)
Journal Article
Kaloper, N., & Padilla, A. (2014). Vacuum energy sequestering: The framework and its cosmological consequences. Physical Review D - Particles, Fields, Gravitation and Cosmology, 90(8), Article 084023. https://doi.org/10.1103/physrevd.90.084023

Recently we suggested a reformulation of general relativity which completely sequesters from gravity all of the vacuum energy from a protected matter sector, assumed to contain the standard model. Here we elaborate further on the mechanism, presentin... Read More about Vacuum energy sequestering: The framework and its cosmological consequences.

Heating and ionization of the primordial intergalactic medium by high mass x-ray binaries (2014)
Journal Article
Knevitt, G., Wynn, G., Power, C., & Bolton, J. S. (2014). Heating and ionization of the primordial intergalactic medium by high mass x-ray binaries. Monthly Notices of the Royal Astronomical Society, 445(2), https://doi.org/10.1093/mnras/stu1803

We investigate the influence of high-mass X-ray binaries (HMXBs) on their high-redshift environments. Using a one-dimensional radiative transfer code, we predict the ionization and temperature profiles surrounding a coeval stellar population, compose... Read More about Heating and ionization of the primordial intergalactic medium by high mass x-ray binaries.

Many-body out-of-equilibrium dynamics of hard-core lattice bosons with non-local loss (2014)
Journal Article
Everest, B., Hush, M., & Lesanovsky, I. (2014). Many-body out-of-equilibrium dynamics of hard-core lattice bosons with non-local loss. Physical Review B, 90(13), Article 134306. https://doi.org/10.1103/PhysRevB.90.134306

We explore the dynamics of hard-core lattice bosons in the presence of strong non-local particle loss. The evolution occurs on two distinct time-scales, first a rapid strongly correlated decay into a highly degenerate Zeno state subspace, followed by... Read More about Many-body out-of-equilibrium dynamics of hard-core lattice bosons with non-local loss.

Relativistic Neel-Order Fields Induced by Electrical Current in Antiferromagnets (2014)
Journal Article

We predict that a lateral electrical current in antiferromagnets can induce nonequilibrium Néel-order fields, i.e., fields whose sign alternates between the spin sublattices, which can trigger ultrafast spin-axis reorientation. Based on microscopic t... Read More about Relativistic Neel-Order Fields Induced by Electrical Current in Antiferromagnets.

Transformations of citrate and Tween coated silver nanoparticles reacted with Na2S (2014)
Journal Article

Silver nanoparticles (Ag NPs) are susceptible to transformations in environmental and biological media such as aggregation, oxidation, dissolution, chlorination, sulfidation, formation/replacement of surface coatings following interaction with natura... Read More about Transformations of citrate and Tween coated silver nanoparticles reacted with Na2S.

Increased GABA Contributes to Enhanced Control over Motor Excitability in Tourette Syndrome (2014)
Journal Article
Stephenson, M., Morgan, P., Draper, A., Stephenson, M. C., Jackson, G., Pépés, S., …Jackson, S. (2014). Increased GABA Contributes to Enhanced Control over Motor Excitability in Tourette Syndrome. Current Biology, 24(19), 2343-2347. https://doi.org/10.1016/j.cub.2014.08.038

Tourette syndrome (TS) is a developmental neurological disorder characterized by vocal and motor tics [1] and associated with cortical-striatal-thalamic-cortical circuit dysfunction [2, 3], hyperexcitability within cortical motor areas [4], and alter... Read More about Increased GABA Contributes to Enhanced Control over Motor Excitability in Tourette Syndrome.

Why z > 1 radio-loud galaxies are commonly located in protoclusters (2014)
Journal Article
Hatch, N. A., Wylezalek, D., Kurk, J., Stern, D., De Breuck, C., Jarvis, M., …Stevens, J. (2014). Why z > 1 radio-loud galaxies are commonly located in protoclusters. Monthly Notices of the Royal Astronomical Society, 445(1), https://doi.org/10.1093/mnras/stu1725

Distant powerful radio-loud active galactic nuclei (RLAGN) tend to reside in dense environments and are commonly found in protoclusters at z > 1.3. We examine whether this occurs because RLAGN are hosted by massive galaxies, which preferentially resi... Read More about Why z > 1 radio-loud galaxies are commonly located in protoclusters.

Dynamics of electronic transitions and frequency dependence of negative capacitance in semiconductor diodes under high forward bias (2014)
Journal Article
Bansal, K., Henini, M., Alshammari, M. S., & Datta, S. (2014). Dynamics of electronic transitions and frequency dependence of negative capacitance in semiconductor diodes under high forward bias. Applied Physics Letters, 105(12), Article 123503. https://doi.org/10.1063/1.4896541

We observed qualitatively dissimilar frequency dependence of negative capacitance under high charge injection in two sets of functionally different junction diodes: III-V based light emitting and Si-based non-light emitting diodes. Using an advanced... Read More about Dynamics of electronic transitions and frequency dependence of negative capacitance in semiconductor diodes under high forward bias.

Impurities as a quantum thermometer for a Bose-Einstein condensate (2014)
Journal Article

We introduce a primary thermometer which measures the temperature of a Bose-Einstein Condensate in the sub-nK regime. We show, using quantum Fisher information, that the precision of our technique improves the state-of-the-art in thermometry in the s... Read More about Impurities as a quantum thermometer for a Bose-Einstein condensate.

Critical relaxation and the combined effects of spatial and temporal boundaries (2014)
Journal Article
Marcuzzi, M., & Gambassi, A. (2014). Critical relaxation and the combined effects of spatial and temporal boundaries. Condensed Matter Physics, 17(3), Article 33603. https://doi.org/10.5488/CMP.17.33603

We revisit here the problem of the collective non-equilibrium dynamics of a classical statistical system at a critical point and in the presence of surfaces. The effects of breaking separately space- and time-translational invariance are well underst... Read More about Critical relaxation and the combined effects of spatial and temporal boundaries.

Bidimensional nano-optomechanics and topological backaction in a non-conservative radiation force field (2014)
Journal Article
Gloppe, A., Verlot, P., Dupont-Ferrier, E., Siria, A., Poncharal, P., Bachelier, G., …Arcizet, O. (2014). Bidimensional nano-optomechanics and topological backaction in a non-conservative radiation force field. Nature Nanotechnology, 9(11), 920-926. https://doi.org/10.1038/nnano.2014.189

Optomechanics, which explores the fundamental coupling between light and mechanical motion, has made important advances in manipulating macroscopic mechanical oscillators down to the quantum level. However, dynamical effects related to the vectorial... Read More about Bidimensional nano-optomechanics and topological backaction in a non-conservative radiation force field.

MegaMorph - multiwavelength measurement of galaxy structure: physically meaningful bulge-disc decomposition of galaxies near and far (2014)
Journal Article
Vika, M., Bamford, S. P., Haussler, B., & Rojas, A. L. (2014). MegaMorph - multiwavelength measurement of galaxy structure: physically meaningful bulge-disc decomposition of galaxies near and far. Monthly Notices of the Royal Astronomical Society, 444(4), https://doi.org/10.1093/mnras/stu1696

Bulge–disc decomposition is a valuable tool for understanding galaxies. However, achieving robust measurements of component properties is difficult, even with high-quality imaging, and it becomes even more so with the imaging typical of large surveys... Read More about MegaMorph - multiwavelength measurement of galaxy structure: physically meaningful bulge-disc decomposition of galaxies near and far.

Ultrafast delocalization of excitation in synthetic light-harvesting nanorings (2014)
Journal Article
Yong, C.-K., Parkinson, P., Kondratuk, D. V., Chen, W.-H., Stannard, A., Summerfield, A., …Herz, L. M. (2015). Ultrafast delocalization of excitation in synthetic light-harvesting nanorings. Chemical Science, 6(1), 181-189. https://doi.org/10.1039/c4sc02424a

Anisotropic magnetoresistance in an antiferromagnetic semiconductor (2014)
Journal Article

Recent studies in devices comprising metal antiferromagnets have demonstrated the feasibility of a novel spintronic concept in which spin-dependent phenomena are governed by an antiferromagnet instead of a ferromagnet. Here we report experimental obs... Read More about Anisotropic magnetoresistance in an antiferromagnetic semiconductor.

Twist-controlled resonant tunnelling in graphene/boron nitride/graphene heterostructures (2014)
Journal Article
Mishchenko, A., Tu, J., Cao, Y., Gorbachev, R., Wallbank, J., Greenaway, M., …Novoselov, K. (2014). Twist-controlled resonant tunnelling in graphene/boron nitride/graphene heterostructures. Nature Nanotechnology, 9, 808-813. https://doi.org/10.1038/NNANO.2014.187

Recent developments in the technology of van der Waals heterostructures made from two-dimensional atomic crystals ave already led to the observation of new physical phenomena, such as the metal-insulator transition and Coulomb drag, and to the realis... Read More about Twist-controlled resonant tunnelling in graphene/boron nitride/graphene heterostructures.

Colour matters: the effects of lensing on the positional offsets between optical and submillimetre galaxies in Herschel-ATLAS (2014)
Journal Article
Bourne, N., Maddox, S., Dunne, L., Dye, S., Eales, S., Hoyos, C., …Rowlands, K. (2014). Colour matters: the effects of lensing on the positional offsets between optical and submillimetre galaxies in Herschel-ATLAS. Monthly Notices of the Royal Astronomical Society, 444(2), https://doi.org/10.1093/mnras/stu1582

We report an unexpected variation in the positional offset distributions between Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) submillimetre (submm) sources and their optical associations, depending on both 250-μm signal-to-noise ratio... Read More about Colour matters: the effects of lensing on the positional offsets between optical and submillimetre galaxies in Herschel-ATLAS.

Comment on ICNIRP guidelines for limiting exposure to electric fields induced by movement of the human body in a static magnetic field and by time-varying magnetic fields below 1 Hz. (2014)
Journal Article
Gowland, P. A., & Glover, P. (2014). Comment on ICNIRP guidelines for limiting exposure to electric fields induced by movement of the human body in a static magnetic field and by time-varying magnetic fields below 1 Hz. Health Physics, 107(3), https://doi.org/10.1097/HP.0000000000000142

Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027 (2014)
Journal Article
Messias, H., Dye, S., Nagar, N., Orellana, G., Shane Bussmann, R., Calanog, J., …Vieira, J. D. (in press). Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027. Astronomy and Astrophysics, 568, A92/1--A92/20. https://doi.org/10.1051/0004-6361/201424410

Context. The submillimetre-bright galaxy population is believed to comprise, aside from local galaxies and radio-loud sources, intrinsically active star-forming galaxies, the brightest of which are lensed gravitationally. The latter enable studies at... Read More about Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027.

Vernier-Templated Synthesis, Crystal Structure, and Supramolecular Chemistry of a 12-Porphyrin Nanoring (2014)
Journal Article
Kondratuk, D. V., Sprafke, J. K., O'Sullivan, M. C., Perdigão, L. M., Saywell, A., Malfois, M., …Anderson, H. L. (2014). Vernier-Templated Synthesis, Crystal Structure, and Supramolecular Chemistry of a 12-Porphyrin Nanoring. Chemistry - A European Journal, 20(40), 12826-12834. https://doi.org/10.1002/chem.201403714

Vernier templating exploits a mismatch between the number of binding sites in a template and a reactant to direct the formation of a product that is large enough to bind several template units. Here, we present a detailed study of the Vernier-templat... Read More about Vernier-Templated Synthesis, Crystal Structure, and Supramolecular Chemistry of a 12-Porphyrin Nanoring.