1. 2D-3D crossover in a dense electron liquid in silicon
- Author
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Matmon, Guy, Ginossar, Eran, Villis, Byron J., Kölker, Alex, Lim, Tingbin, Solanki, Hari, Schofield, Steven R., Curson, Neil J., Li, Juerong, Murdin, Ben N., Fisher, Andrew J., and Aeppli, Gabriel
- Subjects
Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
Doping of silicon via phosphene exposures alternating with molecular beam epitaxy overgrowth is a path to Si:P substrates for conventional microelectronics and quantum information technologies. The technique also provides a new and well-controlled material for systematic studies of two-dimensional lattices with a half-filled band. We show here that for a dense ($n_s=2.8\times 10^{14}$\,cm$^{-2}$) disordered two-dimensional array of P atoms, the full field angle-dependent magnetostransport is remarkably well described by classic weak localization theory with no corrections due to interaction effects. The two- to three-dimensional cross-over seen upon warming can also be interpreted using scaling concepts, developed for anistropic three-dimensional materials, which work remarkably except when the applied fields are nearly parallel to the conducting planes., Comment: 9 pages, 4 figures, supplementary information
- Published
- 2018
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