311 citations · 1.9k across the 34 of their papers we have counts for
8 papers · 1 filter
Magnetic polarons and magnetoresistance in EuB6
M. J. Calderon, L. G. L. Wegener, P. B. Littlewood
EuB6 is a low carrier density ferromagnet which exhibits large magnetoresistance, positive or negative depending on temperature. The formation of magnetic polarons just above the m…
Non-saturating magnetoresistance in heavily disordered semiconductors
M. M. Parish, P. B. Littlewood
The resistance of a homogeneous semiconductor increases quadratically with magnetic field at low fields and, except in very special cases, saturates at fields much larger than the…
Angular distribution of photoluminescence as a probe of Bose Condensation of trapped excitons
Jonathan Keeling, L. S. Levitov, P. B. Littlewood
Recent experiments on two-dimensional exciton systems have shown the excitons collect in shallow in-plane traps. We find that Bose condensation in a trap results in a dramatic chan…
Coexistence and Competition of Isotropic Superconductivity and Itinerant Antiferromagnetism
N. S. Saravanamuttu, M. J. W. Dodgson, P. B. Littlewood
This paper was withdrawn by the authors due to the belated discovery of a published paper showing similar results.
Resonant acousto-optics of microcavity polaritons
A. L. Ivanov, P. B. Littlewood
We propose and analyze theoretically a resonant acousto-optic Stark effect for microcavity (MC) polaritons parametrically driven by a surface acoustic wave. For GaAs-based microcav…
Phase locking in quantum and classical oscillators: polariton condensates, lasers, and arrays of Josephson junctions
P. R. Eastham, M. H. Szymanska, P. B. Littlewood
We connect three phenomena in which a coherent electromagnetic field could be generated: polariton condensation, phase-locking in arrays of underdamped Josephson junctions, and las…