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50 papers · 1 filter
Surface acoustic wave induced magnetoresistance oscillations in a 2D electron gas
John P. Robinson, Malcolm P. Kennett, Nigel R. Cooper +1
We study the geometrical commensurability oscillations imposed onto the resistivity of 2D electrons in a perpendicular magnetic field by a propagating surface acoustic wave (SAW).…
Simulation of the physical properties of the chalcogenide glass AsS using a density-functional-based tight-binding method
S. I. Simdyankin, S. R. Elliott, Z. Hajnal +2
We have used a density-functional-based tight-binding method in order to create structural models of the canonical chalcogenide glass, amorphous (a-)AsS. The models range f…
Stability of Generalised Static Black Holes in Higher Dimensions
Hideo Kodama, Akihiro Ishibashi
We discuss the stability of (charged) static black holes in higher-dimensional spacetimes with and without cosmological constant by using gauge-invariant master equations of the Sc…
Spectropolarimetry of Compton-thin Seyfert 2s
S. L. Lumsden, D. M. Alexander, J. H. Hough
We present new spectropolarimetry of a sample of nearby Compton-thin Seyfert 2 galaxies (ie those with N_H<10^23 cm^-2). We show that the detection rate of scattered broad Halpha i…
The Normal State Resistivity of Grain Boundaries in YBa2Cu3O7-delta
J. H. T. Ransley, S. H. Mennema, K. G. Sandeman +6
Using an optimized bridge geometry we have been able to make accurate measurements of the properties of YBa2Cu3O7-delta grain boundaries above Tc. The results show a strong depende…
Direct Observation of a Temperature Dependent 0-pi Junction Transition in a Mesoscopic High Critical Temperature Grain Boundary Junction
G. Testa, A. Monaco, E. Esposito +5
We have observed, for the first time, a temperature dependent 0-pi junction crossover in a 45 symmetric [001] tilt grain boundary junction. Experimental data, obtained by a double…