All Outputs (61)

Hot phonon effects on high field transport in GaN & AlN (2015)
Journal Article
Dyson, A., Naylor, D. R., & Ridley, B. K. (2015). Hot phonon effects on high field transport in GaN & AlN. IEEE transactions on electron devices, 62(11), 3613-3618. https://doi.org/10.1109/TED.2015.2476383

We have studied the effects of hot phonons on the high-field transport in GaN & AlN. The dynamics of the non-equilibrium electron-LO phonon system is studied via an ensemble Monte-Carlo code. We find that under steady-state conditions the hot-phonons... Read More about Hot phonon effects on high field transport in GaN & AlN.

Shapley Supercluster Survey: Construction of the photometric catalogues and i-band data release (2015)
Journal Article
Mercurio, A., Merluzzi, P., Busarello, G., Grado, A., Limatola, L., Haines, C. P., Brescia, M., Cavuoti, S., Dopita, M., Dall'Ora, M., Capaccioli, M., Napolitano, N., & Pimbblet, K. A. (2015). Shapley Supercluster Survey: Construction of the photometric catalogues and i-band data release. Monthly notices of the Royal Astronomical Society, 453(4), 3685-3698. https://doi.org/10.1093/mnras/stv1905

The Shapley Supercluster Survey is a multi-wavelength survey covering an area of ∼23 deg² (∼260 Mpc² at z = 0.048) around the supercluster core, including nine Abell and two poor clusters, having redshifts in the range 0.045–0.050. The survey aims to... Read More about Shapley Supercluster Survey: Construction of the photometric catalogues and i-band data release.

Galaxy And Mass Assembly (GAMA): the bright void galaxy population in the optical and mid-IR (2015)
Journal Article
Penny, S. J., Brown, M. J. I., Pimbblet, K. A., Cluver, M. E., Croton, D. J., Owers, M. S., Lange, R., Alpaslan, M., Baldry, I., Bland-Hawthorn, J., Brough, S., Driver, S. P., Holwerda, B. W., Hopkins, A. M., Jarrett, T. H., Heath Jones, D., Kelvin, L. S., Lara-López, M. A., Liske, J., López-Sánchez, A. R., …Rodrigues, M. (2015). Galaxy And Mass Assembly (GAMA): the bright void galaxy population in the optical and mid-IR. Monthly notices of the Royal Astronomical Society, 453(4), 3519-3539. https://doi.org/10.1093/mnras/stv1926

© 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. We examine the properties of galaxies in the Galaxies and Mass Assembly (GAMA) survey located in voids with radii > 10 h -1 Mpc. Utilizing the GAM... Read More about Galaxy And Mass Assembly (GAMA): the bright void galaxy population in the optical and mid-IR.

Maximum violations of the quantum-witness equality (2015)
Journal Article
Schild, G., & Emary, C. (2015). Maximum violations of the quantum-witness equality. Physical review. A, 92(3), 1-6. https://doi.org/10.1103/PhysRevA.92.032101

We consider the quantum-witness test of macroscopic realism and derive an upper bound for possible violations of this equality due to quantum mechanics. The bound depends only on the number of possible outcomes for the blind measurement at the heart... Read More about Maximum violations of the quantum-witness equality.

Enhanced two photon absorption cross section and optical nonlinearity of a quasi-octupolar molecule (2015)
Journal Article
Namboodiri, C., Bongu, S., Bisht, P., Mukkamala, R., Chandra, B., Aidhen, I., Kelly, T., & Costello, J. (2016). Enhanced two photon absorption cross section and optical nonlinearity of a quasi-octupolar molecule. Journal of Photochemistry and Photobiology A: Chemistry, 314, 60-65. https://doi.org/10.1016/j.jphotochem.2015.08.016

Two photon absorption (2PA) cross sections of two quasi-octupolar molecules (E,E,E)-2,4,6-tris [2-(4-N,N-diphenylaminophenyl)vinyl]pyridine (DPATSP) and (2,4,6-tris((E)-4-(diphenylamino)styryl)-1-methylpyridine-1-ium iodide, DPATSP-Me) have been esti... Read More about Enhanced two photon absorption cross section and optical nonlinearity of a quasi-octupolar molecule.

Ultrafast and Distinct Spin Dynamics in Magnetic Alloys (2015)
Journal Article
Radu, I., Stamm, C., Eschenlohr, A., Radu, F., Abrudan, R., Vahaplar, K., …Rasing, T. (2015). Ultrafast and Distinct Spin Dynamics in Magnetic Alloys. SPIN, 5(3), Article 1550004. https://doi.org/10.1142/S2010324715500046

Controlling magnetic order on ultrashort timescales is crucial for engineering the next-generation magnetic devices that combine ultrafast data processing with ultrahigh-density data storage. An appealing scenario in this context is the use of femtos... Read More about Ultrafast and Distinct Spin Dynamics in Magnetic Alloys.

Strain Induced Vortex Core Switching in Planar Magnetostrictive Nanostructures (2015)
Journal Article
Ostler, T. A., Cuadrado, R., Chantrell, R. W., Rushforth, A. W., & Cavill, S. A. (2015). Strain Induced Vortex Core Switching in Planar Magnetostrictive Nanostructures. Physical review letters, 115(6), Article 067202. https://doi.org/10.1103/PhysRevLett.115.067202

The dynamics of magnetic vortex cores is of great interest because the gyrotropic mode has applications in spin torque driven magnetic microwave oscillators, and also provides a means to flip the direction of the core for use in magnetic storage devi... Read More about Strain Induced Vortex Core Switching in Planar Magnetostrictive Nanostructures.

Advanced undergraduate RC circuits: An experimentalist's perspective (2015)
Journal Article
Kelly, T. J. (2015). Advanced undergraduate RC circuits: An experimentalist's perspective. European Journal of Physics, 36(5), 055041. https://doi.org/10.1088/0143-0807/36/5/055041

In this paper, an advanced undergraduate RC circuit is studied in two different ways. The circuit is a typical series RC circuit with a time-varying voltage source. The temporal profile of the voltage is an isolated, Gaussian shaped pulse. The voltag... Read More about Advanced undergraduate RC circuits: An experimentalist's perspective.

Carbon-rich presolar grains from massive stars : subsolar ¹²C/¹³C and ¹⁴N/¹⁵N ratios and the mystery of ¹⁵N (2015)
Journal Article
Pignatari, M., Zinner, E., Hoppe, P., J. Jordan, C., K. Gibson, B., Trappitsch, R., Herwig, F., Fryer, C., Hirschi, R., & X. Timmes, F. (2015). Carbon-rich presolar grains from massive stars : subsolar ¹²C/¹³C and ¹⁴N/¹⁵N ratios and the mystery of ¹⁵N. Astrophysical journal. Letters, 808(2), L43. https://doi.org/10.1088/2041-8205/808/2/L43

Carbon-rich grains with isotopic anomalies compared to the Sun are found in primitive meteorites. They were made by stars, and carry the original stellar nucleosynthesis signature. Silicon carbide grains of Type X and C and low-density (LD) graphites... Read More about Carbon-rich presolar grains from massive stars : subsolar ¹²C/¹³C and ¹⁴N/¹⁵N ratios and the mystery of ¹⁵N.

Erratum: Stellar neutron capture cross sections ofNe20,21,22[Phys. Rev. C90, 045804 (2014)] (2015)
Journal Article
Heil, M., Plag, R., Uberseder, E., Gallino, R., Bisterzo, S., Juseviciute, A., Käppeler, F., Lederer, C., Mengoni, A., & Pignatari, M. (2015). Erratum: Stellar neutron capture cross sections ofNe20,21,22[Phys. Rev. C90, 045804 (2014)]. Physical Review C - Nuclear Physics, 92(1), Article 019902. https://doi.org/10.1103/physrevc.92.019902

Erratum: Ni 62 (n,γ) and Ni 63 (n,γ) cross sections measured at the n-TOF facility at CERN [Phys. Rev. C (2014) 89 (025810)] (2015)
Journal Article
Tsinganis, A., Tassan-Got, L., Tarrío, D., Tain, J. L., Tagliente, G., Schmidt, S., Schillebeeckx, P., Lederer, C., Massimi, C., Berthoumieux, E., Colonna, N., Dressler, R., Guerrero, C., Gunsing, F., Käppeler, F., Kivel, N., Pignatari, M., Reifarth, R., Schumann, D., Wallner, A., …Sarmento, R. (2015). Erratum: Ni 62 (n,γ) and Ni 63 (n,γ) cross sections measured at the n-TOF facility at CERN [Phys. Rev. C (2014) 89 (025810)]. Physical Review C - Nuclear Physics, 92(1), Article 019903. https://doi.org/10.1103/physrevc.92.019903

Galaxy And Mass Assembly (GAMA): end of survey report and data release 2 (2015)
Journal Article
Vázquez-Mata, J. A., López-Sánchez, Á. R., Lara-López, M. A., Häußler, B., Liske, J., Baldry, I. K., Driver, S. P., Tuffs, R. J., Alpaslan, M., Andrae, E., Brough, S., Cluver, M. E., Grootes, M. W., Gunawardhana, M. L. P., Kelvin, L. S., Loveday, J., Robotham, A. S. G., Taylor, E. N., Bamford, S. P., Bland-Hawthorn, J., …Wright, A. H. (2015). Galaxy And Mass Assembly (GAMA): end of survey report and data release 2. Monthly notices of the Royal Astronomical Society, 452(2), 2087-2126. https://doi.org/10.1093/mnras/stv1436

The Galaxy And Mass Assembly (GAMA) survey is one of the largest contemporary spectroscopic surveys of low redshift galaxies. Covering an area of ∼286 deg² (split among five survey regions) down to a limiting magnitude of r < 19.8 mag, we have collec... Read More about Galaxy And Mass Assembly (GAMA): end of survey report and data release 2.

Galactic evolution of rapid neutron capture process abundances: The inhomogeneous approach (2015)
Journal Article
Wehmeyer, B., Pignatari, M., & Thielemann, F.-K. (2015). Galactic evolution of rapid neutron capture process abundances: The inhomogeneous approach. Monthly notices of the Royal Astronomical Society, 452(2), 1970-1981. https://doi.org/10.1093/mnras/stv1352

For the origin of heavy r-process elements, different sources have been proposed, e.g., core-collapse supernovae or neutron star mergers. Old metal-poor stars carry the signature of the astrophysical source(s). Among the elements dominantly made by t... Read More about Galactic evolution of rapid neutron capture process abundances: The inhomogeneous approach.

Galactic chemical evolution: Stellar yields and the initial mass function (2015)
Journal Article
Mollá, M., Cavichia, O., Gavilán, M., & Gibson, B. K. (2015). Galactic chemical evolution: Stellar yields and the initial mass function. Monthly notices of the Royal Astronomical Society, 451(4), 3693-3708. https://doi.org/10.1093/mnras/stv1102

We present a set of 144 Galactic chemical evolution models applied to a Milky Way analogue, computed using four sets of low+intermediate star nucleosynthetic yields, six massive star yield compilations, and six functional forms for the initial mass f... Read More about Galactic chemical evolution: Stellar yields and the initial mass function.

The first direct measurement of ¹²C (¹²C,n) ²³Mg at stellar energies (2015)
Journal Article
Bucher, B., Tang, X. D., Fang, X., Heger, A., Alamaraz-Calderon, S., Alongi, A., Ayangeakaa, A. D., Beard, M., Best, A., Browne, J., Cahillane, C., Couder, M., deBoer, R. J., Kontos, A., Lamm, L., Li, Y. J., Long, A., Lu, W., Lyons, S., Notani, M., …Woosley, S. E. (2015). The first direct measurement of ¹²C (¹²C,n) ²³Mg at stellar energies. Physical review letters, 114(25), 251102. https://doi.org/10.1103/PhysRevLett.114.251102

Neutrons produced by the carbon fusion reaction ¹²C(¹²C,n)²³Mg play an important role in stellar nucleosynthesis. However, past studies have shown large discrepancies between experimental data and theory, leading to an uncertain cross section extrapo... Read More about The first direct measurement of ¹²C (¹²C,n) ²³Mg at stellar energies.

Galaxy And Mass Assembly (GAMA): trends in galaxy colours, morphology, and stellar populations with large-scale structure, group, and pair environments (2015)
Journal Article
Alpaslan, M., Driver, S., Robotham, A. S. G., Obreschkow, D., Andrae, E., Cluver, M., Kelvin, L. S., Lange, R., Owers, M., Taylor, E. N., Andrews, S. K., Bamford, S., Bland-Hawthorn, J., Brough, S., Brown, M. J. I., Colless, M., Davies, L. J. M., Eardley, E., Grootes, M. W., Hopkins, A. M., …Tuffs, R. (2015). Galaxy And Mass Assembly (GAMA): trends in galaxy colours, morphology, and stellar populations with large-scale structure, group, and pair environments. Monthly notices of the Royal Astronomical Society, 451(3), 3249-3268. https://doi.org/10.1093/mnras/stv1176

© 2015 The Authors. We explore trends in galaxy properties with Mpc-scale structures using catalogues of environment and large-scale structure from the Galaxy And Mass Assembly (GAMA) survey. Existing GAMA catalogues of large-scale structure, group,... Read More about Galaxy And Mass Assembly (GAMA): trends in galaxy colours, morphology, and stellar populations with large-scale structure, group, and pair environments.

Stripped elliptical galaxies as probes of ICM physics: I. Tails, wakes, and flow patterns in and around stripped ellipticals (2015)
Journal Article
Roediger, E., Kraft, R. P., Nulsen, P. E. J., Forman, W. R., Machacek, M., Randall, S., Jones, C., Churazov, E., & Kokotanekova, R. (2015). Stripped elliptical galaxies as probes of ICM physics: I. Tails, wakes, and flow patterns in and around stripped ellipticals. The Astrophysical journal, 806(1), Article ARTN 103. https://doi.org/10.1088/0004-637X/806/1/103

Elliptical cluster galaxies are progressively stripped of their atmospheres due to their motion through the intra-cluster medium (ICM). Deep X-ray observations reveal the fine-structure of the galaxy's remnant atmosphere and its gas tail and wake. Th... Read More about Stripped elliptical galaxies as probes of ICM physics: I. Tails, wakes, and flow patterns in and around stripped ellipticals.

Stripped elliptical galaxies as probes of ICM physics: II. Stirred, but mixed? Viscous and inviscid gas stripping of the Virgo elliptical M89 (2015)
Journal Article
Roediger, E., Kraft, R. P., Nulsen, P. E. J., Forman, W. R., Machacek, M., Randall, S., Jones, C., Churazov, E., & Kokotanekova, R. (2015). Stripped elliptical galaxies as probes of ICM physics: II. Stirred, but mixed? Viscous and inviscid gas stripping of the Virgo elliptical M89. The Astrophysical journal, 806(1), 104. https://doi.org/10.1088/0004-637X/806/1/104

Elliptical galaxies moving through the intra-cluster medium (ICM) are progressively stripped of their gaseous atmospheres. X-ray observations reveal the structure of galactic tails, wakes, and the interface between the galactic gas and the ICM. This... Read More about Stripped elliptical galaxies as probes of ICM physics: II. Stirred, but mixed? Viscous and inviscid gas stripping of the Virgo elliptical M89.

An alternative methodology to assess the quality of empirical potentials for small gold clusters (2015)
Journal Article
Mancera, L. A., & Benoit, D. M. (2015). An alternative methodology to assess the quality of empirical potentials for small gold clusters. Computational and Theoretical Chemistry, 1067(September), 24-32. https://doi.org/10.1016/j.comptc.2015.05.026

We present a methodology based on local comparisons of potential energy surfaces (PES) in order to assess the quality of empirical potentials. We compare five typical empirical potentials using a criterion that shows which of these potentials resembl... Read More about An alternative methodology to assess the quality of empirical potentials for small gold clusters.

Super hydrophobic SAM modified electrodes for enhanced current limiting properties in intrinsic conducting polymer surge protection devices (2015)
Journal Article
Jabarullah, N. H., Verrelli, E., Mauldin, C., Navarro, L. A., Golden, J. H., Madianos, L. M., & Kemp, N. T. (2015). Super hydrophobic SAM modified electrodes for enhanced current limiting properties in intrinsic conducting polymer surge protection devices. Langmuir : the ACS journal of surfaces and colloids, 31(22), 6253-6264. https://doi.org/10.1021/acs.langmuir.5b00686

Surface interface engineering using superhydrophobic gold electrodes made with 1-dodecanethiol self-assembled monolayer (SAM) has been used to enhance the current limiting properties of novel surge protection devices based on the intrinsic conducting... Read More about Super hydrophobic SAM modified electrodes for enhanced current limiting properties in intrinsic conducting polymer surge protection devices.