www.uhasselt.be
DSpace

Document Server@UHasselt >
Research >
Research publications >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/12125

Title: Study on the giant positive magnetoresistance and Hall effect in ultrathin graphite flakes
Authors: VANSWEEVELT, Rob
MORTET, Vincent
D'HAEN, Jan
RUTTENS, Bart
Van Haesendonck, Chris
Partoens, Bart
Peeters, Francois M.
WAGNER, Patrick
Issue Date: 2011
Publisher: WILEY-BLACKWELL
Citation: PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 208(6). p. 1252-1258
Abstract: In this paper, we report on the electronic transport properties of mesoscopic, ultrathin graphite flakes with a thickness corresponding to a stack of 150 graphene layers. The graphite flakes show an unexpectedly strong positive magnetoresistance (PMR) already at room temperature, which scales in good approximation with the square of the magnetic field. Furthermore, we show that the resistivity is unaffected by magnetic fields oriented in plane with the graphene layers. Hall effect measurements indicate that the charge carriers are p-type and their concentration increases with increasing temperature while the mobility is decreasing. The Hall voltage is non-linear in higher magnetic fields. Possible origins of the observed effects are discussed. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Notes: [Vansweevelt, R; Mortet, V; D'Haen, J; Ruttens, B; Wagner, P] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium [D'Haen, J; Ruttens, B; Wagner, P] IMEC Vzw, Div IMOMEC, B-3590 Diepenbeek, Belgium [Van Haesendonck, C] Katholieke Univ Leuven, Lab Solid State Phys & Magnetism, B-3001 Louvain, Belgium [Partoens, B; Peeters, FM] Univ Antwerp, Dept Phys, B-2020 Antwerp, Belgium patrick.wagner@uhasselt.be
URI: http://hdl.handle.net/1942/12125
DOI: 10.1002/pssa.201001206
ISI #: 000292945800008
ISSN: 1862-6300
Category: A1
Type: Journal Contribution
Validation: ecoom, 2012
Appears in Collections: Research publications

Files in This Item:

Description SizeFormat
published version460.89 kBAdobe PDF

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.