SiC polytypes and doping nature effects on electrical properties of ZnO-SiC Schottky diodes

Rebaoui, Z.; Bouiajra, W.B.; Abboun Abid, M.; Saidane, A.; Jameel, D.; Henini, M.; Felix, J.F.

doi:10.1016/j.mee.2017.01.010

Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode (2017)
Journal Article
Srikanthreddy, D., Glavin, B., Poyser, C. L., Henini, M., Lehmann, D., Jasiukiewicz, C., …Kent, A. (in press). Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode. Physical Review Applied, 7(2), Article 024014. https://doi.org/10.1103/PhysRevApplied.7.024014

We study the generation of microwave electronic signals by pumping a (311) GaAs Schottky diode with compressive and shear acoustic phonons, generated by femtosecond optical excitation of an Al _lm transducer and mode conversion at the Al-GaAs interfa... Read More about Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode.

Effect of lithographically-induced strain relaxation on the magnetic domain configuration in microfabricated epitaxially grown Fe81Ga19 (2017)
Journal Article
Beardsley, R. P., Parkes, D. E., Zemen, J., Bowe, S., Edmonds, K. W., Reardon, C., …Rushforth, A. W. (2017). Effect of lithographically-induced strain relaxation on the magnetic domain configuration in microfabricated epitaxially grown Fe81Ga19. Scientific Reports, 7(1), Article 42107. https://doi.org/10.1038/srep42107

We investigate the role of lithographically-induced strain relaxation in a micron-scaled device fabricated from epitaxial thin films of the magnetostrictive alloy Fe81Ga19. The strain relaxation due to lithographic patterning induces a magnetic aniso... Read More about Effect of lithographically-induced strain relaxation on the magnetic domain configuration in microfabricated epitaxially grown Fe81Ga19.

Facilitation dynamics and localization phenomena in Rydberg lattice gases with position disorder (2017)
Journal Article
Marcuzzi, M., Minář, J., Barredo, D., Léséleuc, S. D., Labuhn, H., Lahaye, T., …Lesanovsky, I. (2017). Facilitation dynamics and localization phenomena in Rydberg lattice gases with position disorder. Physical Review Letters, 118(6-10), Article 063606. https://doi.org/10.1103/PhysRevLett.118.063606

We explore the dynamics of Rydberg excitations in an optical tweezer array under anti-blockade (or facilitation) conditions. Due to the finite temperature the atomic positions are randomly spread, an effect that leads to quenched correlated disorder... Read More about Facilitation dynamics and localization phenomena in Rydberg lattice gases with position disorder.

Vacuum energy sequestering and graviton loops (2017)
Journal Article
Kaloper, N., & Padilla, A. (2017). Vacuum energy sequestering and graviton loops. Physical Review Letters, 118(6), Article 061303. https://doi.org/10.1103/PhysRevLett.118.061303

We recently formulated a local mechanism of vacuum energy sequester. This mechanism automatically removes all matter loop contributions to vacuum energy from the stress energy tensor which sources the curvature. Here we adapt the local vacuum energy... Read More about Vacuum energy sequestering and graviton loops.

Manipulating and probing the polarisation of a methyl tunnelling system by field-cycling NMR (2017)
Journal Article
Zhang, B., Abu-Khumra, S., Aibout, A., & Horsewill, A. J. (2017). Manipulating and probing the polarisation of a methyl tunnelling system by field-cycling NMR. Journal of Chemical Physics, 146(6), Article 064302. https://doi.org/10.1063/1.4975173

In NMR the polarisation of the Zeeman system may be routinely probed and manipulated by applying resonant rf pulses. As with spin-½ nuclei, at low temperature the quantum tunnelling states of a methyl rotor are characterised by two energy levels and... Read More about Manipulating and probing the polarisation of a methyl tunnelling system by field-cycling NMR.

Exploring structure and function of sensory cortex with 7 T MRI (2017)
Journal Article
Schluppeck, D., Sánchez-Panchuelo, R., & Francis, S. T. (2018). Exploring structure and function of sensory cortex with 7 T MRI. NeuroImage, 164, https://doi.org/10.1016/j.neuroimage.2017.01.081

In this paper, we present an overview of 7 Tesla magnetic resonance imaging (MRI) studies of the detailed function and anatomy of sensory areas of the human brain. We discuss the motivation for the studies, with particular emphasis on increasing the... Read More about Exploring structure and function of sensory cortex with 7 T MRI.

Mobility enhancement of CVD graphene by spatially correlated charges (2017)
Journal Article
Turyanska, L., Makarovsky, O., Eaves, L., Patanè, A., & Mori, N. (2017). Mobility enhancement of CVD graphene by spatially correlated charges. 2D Materials, 4(2), Article 025026. https://doi.org/10.1088/2053-1583/aa55b4

The manuscript presents a strategy for enhancing the carrier mobility of single layer CVD graphene (CVD SLG) based on spatially correlated charges. Our Monte Carlo simulations, numerical modeling and the experimental results confirm that spatial corr... Read More about Mobility enhancement of CVD graphene by spatially correlated charges.

Rotating Rayleigh-Taylor instability (2017)
Journal Article
Scase, M. M., Baldwin, K. A., & Hill, R. J. (2017). Rotating Rayleigh-Taylor instability. Physical Review Fluids, 2(2), Article 024801. https://doi.org/10.1103/PhysRevFluids.2.024801

© 2017 American Physical Society. The effect of rotation upon the classical Rayleigh-Taylor instability is investigated. We consider a two-layer system with an axis of rotation that is perpendicular to the interface between the layers. In general, we... Read More about Rotating Rayleigh-Taylor instability.

Delayed response in the Hawk Dove Game (2017)
Journal Article
Burridge, J., Yu, G., & Mao, Y. (in press). Delayed response in the Hawk Dove Game. European Physical Journal B: Condensed Matter and Complex Systems, 90(13), https://doi.org/10.1140/epjb/e2016-70471-1

We consider a group of agents playing the Hawk-Dove game. These agents have a finite memory of past interactions which they use to optimize their play. By both analytical and numerical approaches, we show that an instability occurs at a critical memo... Read More about Delayed response in the Hawk Dove Game.

Imaging current-induced switching of antiferromagnetic domains in CuMnAs (2017)
Journal Article
Grzybowski, M., Wadley, P., Edmonds, K., Beardsley, R., Hills, V. A., Campion, R., …Dhesi, S. (2017). Imaging current-induced switching of antiferromagnetic domains in CuMnAs. Physical Review Letters, 118(5), Article 057701. https://doi.org/10.1103/PhysRevLett.118.057701

The magnetic order in antiferromagnetic materials is hard to control with external magnetic fields. Using X-ray Magnetic Linear Dichroism microscopy, we show that staggered effective fields generated by electrical current can induce modification of t... Read More about Imaging current-induced switching of antiferromagnetic domains in CuMnAs.

The effect of physical fatigue on oscillatory dynamics of the sensorimotor cortex (2017)
Journal Article
Fry, A., Mullinger, K. J., O'Neill, G. C., Brookes, M. J., & Folland, J. P. (2018). The effect of physical fatigue on oscillatory dynamics of the sensorimotor cortex. Acta Physiologica, 220(3), 370-381. https://doi.org/10.1111/apha.12843

Aim: While physical fatigue is known to arise in part from supraspinal mechanisms within the brain exactly how brain activity is modulated during fatigue is not well understood. Therefore, this study examined how typical neural oscillatory responses... Read More about The effect of physical fatigue on oscillatory dynamics of the sensorimotor cortex.

Nonequilibrium effective field theory for absorbing state phase transitions in driven open quantum spin systems (2017)
Journal Article
Buchhold, M., Everest, B., Marcuzzi, M., Lesanovsky, I., & Diehl, S. (2017). Nonequilibrium effective field theory for absorbing state phase transitions in driven open quantum spin systems. Physical Review B, 95, https://doi.org/10.1103/PhysRevB.95.014308

Phase transitions to absorbing states are among the simplest examples of critical phenomena out of equilibrium. The characteristic feature of these models is the presence of a fluctuationless configuration which the dynamics cannot leave, which has p... Read More about Nonequilibrium effective field theory for absorbing state phase transitions in driven open quantum spin systems.

OMEGA – OSIRIS Mapping of Emission-line Galaxies in A901/2: II. Environmental influence on integrated star formation properties and AGN activity (2017)
Journal Article
Rodríguez del Pino, B., Aragón-Salamanca, A., Chies-Santos, A. L., Weinzirl, T., Bamford, S. P., Gray, M. E., …Maltby, D. T. (2017). OMEGA – OSIRIS Mapping of Emission-line Galaxies in A901/2: II. Environmental influence on integrated star formation properties and AGN activity. Monthly Notices of the Royal Astronomical Society, 467(4), 4200-4217. https://doi.org/10.1093/mnras/stx228

We present a study of the star formation and AGN activity for galaxies in CP 15051 the Abell 901/2 multicluster system at z ∼ 0.167 as part of the OSIRIS Mapping of Emission-line Galaxies in A901/2 (OMEGA) survey. Using Tuneable Filter data obtained... Read More about OMEGA – OSIRIS Mapping of Emission-line Galaxies in A901/2: II. Environmental influence on integrated star formation properties and AGN activity.

A new generation of magnetoencephalography: Room temperature measurements using optically-pumped magnetometers (2017)
Journal Article
Boto, E., Meyer, S. S., Shah, V., Alem, O., Knappe, S., Kruger, P., …Brookes, M. J. (2017). A new generation of magnetoencephalography: Room temperature measurements using optically-pumped magnetometers. NeuroImage, 149, 404-414. https://doi.org/10.1016/j.neuroimage.2017.01.034

© 2017 The Authors Advances in the field of quantum sensing mean that magnetic field sensors, operating at room temperature, are now able to achieve sensitivity similar to that of cryogenically cooled devices (SQUIDs). This means that room temperatur... Read More about A new generation of magnetoencephalography: Room temperature measurements using optically-pumped magnetometers.

The host galaxies and explosion sites of long-duration gamma-ray bursts: Hubble Space Telescope near-infrared imaging (2017)
Journal Article
Lyman, D., Levan, A., Tanvir, N., Fynbo, J., McGuire, J., Perley, D., …Starling, R. (2017). The host galaxies and explosion sites of long-duration gamma-ray bursts: Hubble Space Telescope near-infrared imaging. Monthly Notices of the Royal Astronomical Society, 467(2), 1795-1817. https://doi.org/10.1093/mnras/stx220

We present the results of a Hubble Space Telescope WFC3/F160W Snapshot survey of the host galaxies of 39 long-duration gamma-ray bursts (LGRBs) at z < 3. We have non-detections of hosts at the locations of four bursts. Sufficient accuracy to astromet... Read More about The host galaxies and explosion sites of long-duration gamma-ray bursts: Hubble Space Telescope near-infrared imaging.

Surface-selective direct 17O DNP NMR of CeO2 nanoparticles (2017)
Journal Article
Hope, M. A., Halat, D. M., Magusin, P. C., Paul, S., Peng, L., & Grey, C. P. (2017). Surface-selective direct 17O DNP NMR of CeO2 nanoparticles. Chemical Communications, 53(13), https://doi.org/10.1039/c6cc10145c

Surface-selective direct 17O DNP has been demonstrated for the first time on CeO2 nanoparticles, for which the first three layers can be distinguished with high selectivity. Polarisation build-up curves show that the polarisation of the (sub-)surface... Read More about Surface-selective direct 17O DNP NMR of CeO2 nanoparticles.

Radiation trapping in a dense cold Rydberg gas (2017)
Journal Article
Sadler, D., Bridge, E., Boddy, D., Bounds, A., Keegan, N., Lochead, G., …Olmos, B. (2017). Radiation trapping in a dense cold Rydberg gas. Physical Review A, 95(1), Article 013839. https://doi.org/10.1103/PhysRevA.95.013839

Cold atomic gases resonantly excited to Rydberg states can exhibit strong optical nonlinearity at the single photon level. We observe that in such samples radiation trapping leads to an additional mechanism for Rydberg excitation. Conversely we demon... Read More about Radiation trapping in a dense cold Rydberg gas.

Gas around galaxy haloes - III: hydrogen absorption signatures around galaxies and QSOs in the Sherwood simulation suite (2017)
Journal Article
Meiksin, A., Bolton, J. S., & Puchwein, E. (2017). Gas around galaxy haloes - III: hydrogen absorption signatures around galaxies and QSOs in the Sherwood simulation suite. Monthly Notices of the Royal Astronomical Society, 468(2), 1893-1901. https://doi.org/10.1093/mnras/stx191

Modern theories of galaxy formation predict that galaxies impact on their gaseous surroundings, playing the fundamental role of regulating the amount of gas converted into stars. While star-forming galaxies are believed to provide feedback through ga... Read More about Gas around galaxy haloes - III: hydrogen absorption signatures around galaxies and QSOs in the Sherwood simulation suite.

CANDELS multi-wavelength catalogs: source identification and photometry in the CANDELS COSMOS survey field (2017)
Journal Article
Nayyeri, H., Hemmati, S., Mobasher, B., Ferguson, H. C., Cooray, A., Barro, G., …Yan, H. (2017). CANDELS multi-wavelength catalogs: source identification and photometry in the CANDELS COSMOS survey field. Astrophysical Journal Supplement, 228(1), Article 7. https://doi.org/10.3847/1538-4365/228/1/7

We present a multi-wavelength photometric catalog in the COSMOS field as part of the observations by the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey. The catalog is based on Hubble Space Telescope Wide Field Camera 3 (HST/WFC3) and... Read More about CANDELS multi-wavelength catalogs: source identification and photometry in the CANDELS COSMOS survey field.

SiC polytypes and doping nature effects on electrical properties of ZnO-SiC Schottky diodes (2017)
Journal Article
Rebaoui, Z., Bouiajra, W., Abboun Abid, M., Saidane, A., Jameel, D., Henini, M., & Felix, J. (2017). SiC polytypes and doping nature effects on electrical properties of ZnO-SiC Schottky diodes. Microelectronic Engineering, 171, https://doi.org/10.1016/j.mee.2017.01.010

Electrical properties of ZnO/SiC Schottky diodes with two SiC polytypes and N and P doping are investigated. Characterization was performed through I–V and C–V–f measurements. Schottky barrier height (Φb), ideality factor (n), and series resistance (... Read More about SiC polytypes and doping nature effects on electrical properties of ZnO-SiC Schottky diodes.

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