15,168 research outputs found
Comment on "Anderson transition in disordered graphene"
We comment on a recent letter by Amini et al. (EPL 87, 37002 (2009))
concerning the existence of a mobility edge in disordered graphene.Comment: 3 pages, 3 figure
Transient electromagnetic interaction of the moon with the solar wind
Transient response of moon to variations in interplanetary magnetic fiel
The early despinning of the sun
Despinning of sun when passing through T Tauri stage during earlier developmen
A theory for the interpretation of lunar surface magnetometer data
Electromagnetic interaction of moon with spatial irregularities in interplanetary magnetic field
Unusual localisation effects in quantum percolation
We present a detailed study of the quantum site percolation problem on simple
cubic lattices, thereby focussing on the statistics of the local density of
states and the spatial structure of the single particle wavefunctions. Using
the Kernel Polynomial Method we refine previous studies of the metal-insulator
transition and demonstrate the non-monotonic energy dependence of the quantum
percolation threshold. Remarkably, the data indicates a ``fragmentation'' of
the spectrum into extended and localised states. In addition, the observation
of a chequerboard-like structure of the wavefunctions at the band centre can be
interpreted as anomalous localisation.Comment: 5 pages, 7 figure
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