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Thermoelectric Characterization of Electronic Properties of GaMnAs Nanowires
Division of Solid State Physics and the Nanometer Structure Consortium (NmC at LU), Lund University, P.O. Box 118, 221 00 Lund, Sweden.
Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS).ORCID-id: 0000-0002-2348-1244
Division of Solid State Physics and the Nanometer Structure Consortium (NmC at LU), Lund University, P.O. Box 118, 221 00 Lund, Sweden.
Institute for Solid State Physics, Jena University, Max-Wien-Platz 1, 07743 Jena, Germany.
Vise andre og tillknytning
2012 (engelsk)Inngår i: Journal of Nanotechnology, ISSN 1687-9503, E-ISSN 1687-9511, Vol. 2012, artikkel-id 480813Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Nanowires with magnetic doping centers are an exciting candidate for the study of spin physics and proof-of-principle spintronics devices. The required heavy doping can be expected to have a significant impact on the nanowires' electron transport properties. Here, we use thermopower and conductance measurements for transport characterization of Ga 0.95Mn 0.05As nanowires over a broad temperature range. We determine the carrier type (holes) and concentration and find a sharp increase of the thermopower below temperatures of 120 K that can be qualitatively described by a hopping conduction model. However, the unusually large thermopower suggests that additional mechanisms must be considered as well. © 2012 Phillip M. Wu et al.

sted, utgiver, år, opplag, sider
New York: Hindawi Publishing Corporation, 2012. Vol. 2012, artikkel-id 480813
Emneord [en]
Thermoelectric, Hopping conduction model, Nanowires, GaMnAs
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Identifikatorer
URN: urn:nbn:se:hh:diva-19650DOI: 10.1155/2012/480813Scopus ID: 2-s2.0-84867365396OAI: oai:DiVA.org:hh-19650DiVA, id: diva2:553003
Forskningsfinansiär
Swedish Research CouncilKnut and Alice Wallenberg FoundationThe nanometer Structure Consortium at Lund UniversityTilgjengelig fra: 2012-09-18 Laget: 2012-09-17 Sist oppdatert: 2018-04-03bibliografisk kontrollert

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