Delocalized-localized transition in a semiconductor two-dimensional honeycomb lattice

G. De Simoni; A. Singha; M. Gibertini; B. Karmakar; M. Polini; V. Piazza; L. N. Pfeiffer; K. W. West; F. Beltram; V. Pellegrini

doi:10.1063/1.3493189

Delocalized-localized transition in a semiconductor two-dimensional honeycomb lattice

G. De Simoni, A. Singha, M. Gibertini, B. Karmakar, M. Polini, V. Piazza, L. N. Pfeiffer, K. W. West, F. Beltram, V. Pellegrini

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40 Scopus citations

Abstract

We report the magnetotransport properties of a two-dimensional electron gas in a modulation-doped AlGaAs/GaAs heterostructure subjected to a lateral potential with honeycomb geometry. Periodic oscillations of the magnetoresistance and a delocalized-localized transition are shown by applying a gate voltage. We argue that electrons in such artificial-graphene lattices offer a promising approach for the simulation of quantum phases dictated by Coulomb interactions.

Original language	English (US)
Article number	132113
Journal	Applied Physics Letters
Volume	97
Issue number	13
DOIs	https://doi.org/10.1063/1.3493189
State	Published - Sep 27 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3493189

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title = "Delocalized-localized transition in a semiconductor two-dimensional honeycomb lattice",

abstract = "We report the magnetotransport properties of a two-dimensional electron gas in a modulation-doped AlGaAs/GaAs heterostructure subjected to a lateral potential with honeycomb geometry. Periodic oscillations of the magnetoresistance and a delocalized-localized transition are shown by applying a gate voltage. We argue that electrons in such artificial-graphene lattices offer a promising approach for the simulation of quantum phases dictated by Coulomb interactions.",

author = "{De Simoni}, G. and A. Singha and M. Gibertini and B. Karmakar and M. Polini and V. Piazza and Pfeiffer, {L. N.} and West, {K. W.} and F. Beltram and V. Pellegrini",

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month = sep,

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doi = "10.1063/1.3493189",

language = "English (US)",

volume = "97",

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T1 - Delocalized-localized transition in a semiconductor two-dimensional honeycomb lattice

AU - De Simoni, G.

AU - Singha, A.

AU - Gibertini, M.

AU - Karmakar, B.

AU - Polini, M.

AU - Piazza, V.

AU - Pfeiffer, L. N.

AU - West, K. W.

AU - Beltram, F.

AU - Pellegrini, V.

PY - 2010/9/27

Y1 - 2010/9/27

N2 - We report the magnetotransport properties of a two-dimensional electron gas in a modulation-doped AlGaAs/GaAs heterostructure subjected to a lateral potential with honeycomb geometry. Periodic oscillations of the magnetoresistance and a delocalized-localized transition are shown by applying a gate voltage. We argue that electrons in such artificial-graphene lattices offer a promising approach for the simulation of quantum phases dictated by Coulomb interactions.

AB - We report the magnetotransport properties of a two-dimensional electron gas in a modulation-doped AlGaAs/GaAs heterostructure subjected to a lateral potential with honeycomb geometry. Periodic oscillations of the magnetoresistance and a delocalized-localized transition are shown by applying a gate voltage. We argue that electrons in such artificial-graphene lattices offer a promising approach for the simulation of quantum phases dictated by Coulomb interactions.

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IS - 13

M1 - 132113

ER -

Delocalized-localized transition in a semiconductor two-dimensional honeycomb lattice

Abstract

All Science Journal Classification (ASJC) codes

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