Weak localization and antilocalization in semiconducting polymer sandwich devices

Ö Mermer; M Wohlgenannt; G Veeraraghavan; T. L Francis

doi:10.48550/arxiv.cond-mat/0312204

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Weak localization and antilocalization in semiconducting polymer sandwich devices

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Weak localization and antilocalization in semiconducting polymer sandwich devices

Ö Mermer, M Wohlgenannt, G Veeraraghavan and T. L Francis

ArXiv.org

Cornell University

12/08/2003

DOI: 10.48550/arxiv.cond-mat/0312204

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Preprint (Author's original)This preprint has not been evaluated by subject experts through peer review. Preprints may undergo extensive changes and/or become peer-reviewed journal articles. Open Access

Abstract

We have performed magnetoresistance measurements on polyfluorene sandwich devices in weak magnetic fields as a function of applied voltage, device temperature (10K to 300K), film thickness and electrode materials. We observed either negative or positive magnetoresistance, dependent mostly on the applied voltage, with a typical magnitude of several percent. The shape of the magnetoresistance curve is characteristic of weak localization and antilocalization. Using weak localization theory, we find that the phase-breaking length is relatively large even at room temperature, and spin-orbit interaction is a function of the applied electric field.

Physics - Soft Condensed Matter

Details

Title: Subtitle: Weak localization and antilocalization in semiconducting polymer sandwich devices
Creators: Ö Mermer
M Wohlgenannt
G Veeraraghavan
T. L Francis
Resource Type: Preprint
Publication Details: ArXiv.org
Publisher: Cornell University
DOI: 10.48550/arxiv.cond-mat/0312204
ISSN: 2331-8422
Number of pages: 5
Language: English
Date posted: 12/08/2003
Academic Unit: Physics and Astronomy
Record Identifier: 9984442211702771

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