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Andre K. Geim
Researcher at University of Manchester
Publications - 466
Citations - 232754
Andre K. Geim is an academic researcher from University of Manchester. The author has contributed to research in topics: Graphene & Magnetic field. The author has an hindex of 125, co-authored 445 publications receiving 206833 citations. Previous affiliations of Andre K. Geim include University of Nottingham & Russian Academy of Sciences.
Papers
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Journal ArticleDOI
High-order fractal states in graphene superlattices.
R. Krishna Kumar,Artem Mishchenko,Xi Chen,Sergio Pezzini,Gregory Auton,L. A. Ponomarenko,Uli Zeitler,Laurence Eaves,Laurence Eaves,Vladimir I. Fal'ko,Andre K. Geim +10 more
TL;DR: In this article, magnetotransport measurements reveal second-, third-, and fourth-order magnetic Bloch states at high electron densities and temperatures above 100 K. The hierarchy of the fractal states is determined by the width of magnetic minibands, in qualitative agreement with their band-structure calculations.
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Raman spectroscopy of highly pressurized graphene membranes
Yuyoung Shin,M. Lozada-Hidalgo,J. L. Sambricio,Irina V. Grigorieva,Andre K. Geim,Cinzia Casiraghi +5 more
TL;DR: In this article, a simple fabrication technique was proposed to produce pressurized and stable graphene membranes that can support differential pressures up to 14 bar, corresponding to a reversible strain up to ∼2%.
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Asymmetric scattering and diffraction of two-dimensional electrons at quantized tubes of magnetic flux.
Andre K. Geim,Andre K. Geim,Simon J. Bending,Simon J. Bending,Irina V. Grigorieva,Irina V. Grigorieva +5 more
TL;DR: The Hall conductivity of a high-mobility two-dimensional electron gas (2DEG) has been investigated in a distribution of quantized magnetic flux tubes (vortices) formed at a type-II superconducting "gate" layer, indicating a situation where electrons are diffracted by the flux quanta.
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Memory effects in individual submicrometer ferromagnets
TL;DR: In this paper, the magnetization of individual submicrometer nickel disks (80 nm high, $0.1--1.0\ensuremath{\mu}\mathrm{m}$ diameter) was studied and it was shown that hysteresis loops of the disks no longer show inversion symmetry in a magnetic field.
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Graphene-hexagonal boron nitride resonant tunneling diodes as high-frequency oscillators
Jennifer Gaskell,Laurence Eaves,Laurence Eaves,Kostya S. Novoselov,Artem Mishchenko,Andre K. Geim,T. M. Fromhold,Mark Greenaway +7 more
TL;DR: In this paper, the potential of two-terminal graphene-hexagonal boron nitride-graphene resonant tunneling diodes as high-frequency oscillators was assessed using self-consistent quantum transport and electrostatic simulations.