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Two- to three-dimensional crossover in a dense electron liquid in silicon

Matmon, G; Ginossar, E; Villis, B; Koelker, A; Lim, T; Solanki, H; Schofield, S; ... Aeppli, G; + view all (2018) Two- to three-dimensional crossover in a dense electron liquid in silicon. Physical Review B , 97 (155306) 10.1103/PhysRevB.97.155306. Green open access

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Abstract

Doping of silicon via phosphine 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 well-controlled material for systematic studies of two-dimensional lattices with a half-filled band.We show here that for a dense (ns = 2.8 × 10^14 cm−2) disordered two-dimensional array of P atoms, the full field magnitude and angle-dependent magnetotransport is remarkably well described by classic weak localization theory with no corrections due to interaction. The two- to three-dimensional crossover seen upon warming can also be interpreted using scaling concepts developed for anistropic three-dimensional materials,whichwork remarkably except when the applied fields are nearly parallel to the conducting planes.

Type: Article
Title: Two- to three-dimensional crossover in a dense electron liquid in silicon
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevB.97.155306
Publisher version: http://doi.org/10.1103/PhysRevB.97.155306
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Magnetotransport, Weak localization, Scaling
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/10047426
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