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Thermoelectric Characterization of Electronic Properties of GaMnAs Nanowires
Lund University.
Lund University.
Lund University.
Jena University.
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2012 (English)In: Journal of Nanotechnology, ISSN 1687-9503, E-ISSN 1687-9511, Article ID: 480813- p.Article in journal (Refereed) 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 Ga0.95Mn0.05As 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.

Place, publisher, year, edition, pages
Hindawi Publishing Corporation, 2012. Article ID: 480813- p.
National Category
Nano Technology Condensed Matter Physics
Research subject
Physics, Condensed Matter Physics
Identifiers
URN: urn:nbn:se:lnu:diva-28093DOI: 10.1155/2012/480813Scopus ID: 2-s2.0-84867365396OAI: oai:DiVA.org:lnu-28093DiVA: diva2:640446
Available from: 2013-08-13 Created: 2013-08-13 Last updated: 2017-12-06Bibliographically approved

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Canali, Carlo M.

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