Journal article
Large magnetoresistance at room-temperature in semiconducting polymer sandwich devices
New journal of physics, Vol.6(1), 185
2004
DOI: 10.1088/1367-2630/6/1/185
Abstract
We report on the discovery of a large, room temperature magnetoresistance (MR) effect in polyfluorene sandwich devices in weak magnetic fields. We characterize this effect and discuss its dependence on voltage, temperature, film thickness, electrode materials, and (unintentional) impurity concentration. We usually observed negative MR, but positive MR can also be achieved under high applied electric fields. The MR effect reaches up to 10% at fields of 10mT at room temperature. The effect shows only a weak temperature dependence and is independent of the sign and direction of the magnetic field. We find that the effect is related to the hole current in the devices.
Details
- Title: Subtitle
- Large magnetoresistance at room-temperature in semiconducting polymer sandwich devices
- Creators
- T. L. Francis - University of IowaÖ Mermer - University of IowaG. Veeraraghavan - University of IowaM. Wohlgenannt - University of Iowa
- Resource Type
- Journal article
- Publication Details
- New journal of physics, Vol.6(1), 185
- DOI
- 10.1088/1367-2630/6/1/185
- ISSN
- 1367-2630
- eISSN
- 1367-2630
- Language
- English
- Date published
- 2004
- Academic Unit
- IIHR--Hydroscience and Engineering; Physics and Astronomy
- Record Identifier
- 9984428773202771
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