Outputs (251)

Three-dimensional Heisenberg critical behavior in the highly disordered dilute ferromagnetic semiconductor (Ga,Mn)As (2016)
Journal Article
Wang, M., Marshall, R. A., Edmonds, K. W., Rushforth, A., Campion, R., & Gallagher, B. (2016). Three-dimensional Heisenberg critical behavior in the highly disordered dilute ferromagnetic semiconductor (Ga,Mn)As. Physical Review B, 93(18), Article 184417. https://doi.org/10.1103/PhysRevB.93.184417

We present detailed studies of critical behavior in the strongly site-disordered dilute ferromagnetic semiconductor
(Ga,Mn)As. (Ga,Mn)As has a low saturation magnetization and relatively strong magnetocrystalline anisotropy. This combination of prop... Read More about Three-dimensional Heisenberg critical behavior in the highly disordered dilute ferromagnetic semiconductor (Ga,Mn)As.

Room-temperature spin-orbit torque in NiMnSb (2016)
Journal Article
Ciccarelli, C., Anderson, L., Tshitoyan, V., Ferguson, A., Gerhard, F., Gould, C., …Jungwirth, T. (in press). Room-temperature spin-orbit torque in NiMnSb. Nature Physics, 12, https://doi.org/10.1038/nphys3772

Materials that crystalize in diamond-related lattices, with Si and GaAs as their prime examples, are at the foundation of modern electronics. Simultaneously, the two atomic sites in the unit cell of these crystals form inversion partners which gives... Read More about Room-temperature spin-orbit torque in NiMnSb.

Prediction of alcohol drinking in adolescents: Personality-traits, behavior, brain responses, and genetic variations in the context of reward sensitivity (2016)
Journal Article
Heinrich, A., Müller, K. U., Banaschewski, T., Barker, G. J., Bokde, A. L., Bromberg, U., …Nees, F. (2016). Prediction of alcohol drinking in adolescents: Personality-traits, behavior, brain responses, and genetic variations in the context of reward sensitivity. Biological Psychology, 118, https://doi.org/10.1016/j.biopsycho.2016.05.002

Adolescence is a time that can set the course of alcohol abuse later in life. Sensitivity to reward on multiple levels is a major factor in this development. We examined 736 adolescents from the IMAGEN longitudinal study for alcohol drinking during e... Read More about Prediction of alcohol drinking in adolescents: Personality-traits, behavior, brain responses, and genetic variations in the context of reward sensitivity.

Characterization of p-GaN1−xAsx/n-GaN PN junction diodes (2016)
Journal Article
Qian, H., Lee, K., Vajargah, S., Novikov, S., Guiney, I., Zhang, S., Zaidi, Z., Jiang, S., Wallis, D., Foxon, C., Humphreys, C., & Houston, P. (2016). Characterization of p-GaN1−xAsx/n-GaN PN junction diodes. Semiconductor Science and Technology, 31(6), https://doi.org/10.1088/0268-1242/31/6/065020

The structural properties and electrical conduction mechanisms of p-type amorphous GaN1−xAsx/n-type crystalline GaN PN junction diodes are presented. A hole concentration of 8.5×1019 cm−3 is achieved which allows a specific contact resistance of 1.3×... Read More about Characterization of p-GaN1−xAsx/n-GaN PN junction diodes.

Mapping quantal touch using 7 Tesla functional magnetic resonance imaging and single-unit intraneural microstimulation (2016)
Journal Article
Sanchez Panchuelo, R., Ackerley, R. M., Glover, P. M., Bowtell, R. W., Wessberg, J., Francis, S. T., & McGlone, F. (2016). Mapping quantal touch using 7 Tesla functional magnetic resonance imaging and single-unit intraneural microstimulation. eLife, 5(MAY2016), Article e.Life.12812. https://doi.org/10.7554/elife.12812

Using ultra-high field 7 Tesla (7T) functional magnetic resonance imaging (fMRI), we map the cortical and perceptual responses elicited by intraneural microstimulation (INMS) of single mechanoreceptive afferent units in the median nerve, in humans. A... Read More about Mapping quantal touch using 7 Tesla functional magnetic resonance imaging and single-unit intraneural microstimulation.

Surface acoustic wave velocity and elastic constants of cubic GaN (2016)
Journal Article
Riobóo, R. J. J., Cuscó, R., Prieto, C., Kopittke, C., Novikov, S. V., & Artús, L. (2016). Surface acoustic wave velocity and elastic constants of cubic GaN. Applied Physics Express, 9(6), Article 061001. https://doi.org/10.7567/APEX.9.061001

We present high-resolution surface Brillouin scattering measurements on cubic GaN layers grown on GaAs substrate. By using a suitable scattering geometry, scattering by surface acoustic waves is recorded for different azimuthal angles, and the surfac... Read More about Surface acoustic wave velocity and elastic constants of cubic GaN.

Phonon-Assisted Resonant Tunneling of Electrons in Graphene–Boron Nitride Transistors (2016)
Journal Article
Vdovin, E. E., Mishchenko, A., Greenaway, M., Zhu, M., Ghazaryan, D., Misra, A., …Eaves, L. (2016). Phonon-Assisted Resonant Tunneling of Electrons in Graphene–Boron Nitride Transistors. Physical Review Letters, 116(18), Article 186603. https://doi.org/10.1103/PhysRevLett.116.186603

We observe a series of sharp resonant features in the differential conductance of graphene-hexagonal boron nitride-graphene tunnel transistors over a wide range of bias voltages between 10 and 200 mV. We attribute them to electron tunneling assisted... Read More about Phonon-Assisted Resonant Tunneling of Electrons in Graphene–Boron Nitride Transistors.

Effect of Co-60 gamma-ray irradiation on electrical properties of Ti/Au/GaAs1-xNx Schottky diodes (2016)
Journal Article
Teffahi, A., Hamri, D., Mostefa, A., Saidane, A., Al Saqri, N., Felix, J., & Henini, M. (in press). Effect of Co-60 gamma-ray irradiation on electrical properties of Ti/Au/GaAs1-xNx Schottky diodes. Current Applied Physics, 16(8), https://doi.org/10.1016/j.cap.2016.05.003

Current-voltage (I-V), capacitance-voltage-frequency (C-V-f) and conductance-voltage-frequency (G/ω-V-f) measurements at room temperature are used to study 50 kGy 60Co γ-ray electrical properties irradiation dependence of Ti/Au/GaAs1−xNx Schottky dio... Read More about Effect of Co-60 gamma-ray irradiation on electrical properties of Ti/Au/GaAs1-xNx Schottky diodes.

Matter power spectrum and the challenge of percent accuracy (2016)
Journal Article
Schneider, A., Teyssier, R., Potter, D., Stadel, J., Onions, J., Reed, D. S., …Scoccimarro, R. (2016). Matter power spectrum and the challenge of percent accuracy. Journal of Cosmology and Astroparticle Physics, 2016(4), 1-21. https://doi.org/10.1088/1475-7516/2016/04/047

© 2016 IOP Publishing Ltd and Sissa Medialab srl. Future galaxy surveys require one percent precision in the theoretical knowledge of the power spectrum over a large range including very nonlinear scales. While this level of accuracy is easily obtain... Read More about Matter power spectrum and the challenge of percent accuracy.

A comparison of phase imaging and quantitative susceptibility mapping in the imaging of multiple sclerosis lesions at ultrahigh field (2016)
Journal Article
Cronin, M. J., Wharton, S., Al-Radaideh, A., Constantinescu, C., Evangelou, N., Bowtell, R. W., & Gowland, P. A. (2016). A comparison of phase imaging and quantitative susceptibility mapping in the imaging of multiple sclerosis lesions at ultrahigh field. Magnetic Resonance Materials in Physics, Biology and Medicine, 29(3), 543-557. https://doi.org/10.1007/s10334-016-0560-5

Objective

The aim of this study was to compare the use of high-resolution phase and QSM images acquired at ultra-high field in the investigation of multiple sclerosis (MS) lesions with peripheral rings, and to discuss their usefulness for drawing... Read More about A comparison of phase imaging and quantitative susceptibility mapping in the imaging of multiple sclerosis lesions at ultrahigh field.