Abstrakti
Magnetotransport of La0.7Sr0.3MnO3 (LSMO)/regioregular poly3-hexylthiophene (rr-P3HT) interfaces were studied at 5-300 K to gain insight of spin transport in polymer coated LSMO. LSMO films on SrTiO3 (STO), MgO, and quartz substrates were characterized in pristine state, after depositing rr-P3HT and after removing rr-P3HT. Application and removal of rr-P3HT caused the disappearance of colossal magneto resistance and the emerging of low-field magnetoresistance (LFMR) in STO/LSMO, while the same treatment on MgO and quartz showed only a large LMFR signal with no significant changes during application and removal of rr-P3HT. This result signifies that epitaxial thin films of LSMO do not maintain their transport characteristics when coated with organic semiconductors, posing a limitation for efficient spin polarized injection at such interfaces. Copyright 2013 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. [http://dx.doi.org/10.1063/1.4800907]
| Alkuperäiskieli | Ei tiedossa |
|---|---|
| Sivut | – |
| Sivumäärä | 8 |
| Julkaisu | AIP Advances |
| Vuosikerta | 3 |
| Numero | 4 |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - 2013 |
| OKM-julkaisutyyppi | A1 Julkaistu artikkeli, soviteltu |
Keywords
- colossal magnetoresistance
- conducting polymers
- ferromagnetic materials
- interface magnetism
- lanthanum compounds
- magnetic epitaxial layers
- organic semiconductors
- semiconductor-insulator boundaries
- spin polarised transport
- strontium compounds