Effects of conjugated polymer on the magnetotransport properties in La0.7Sr0.3MnO3 ferromagnetic electrodes | Zendy

Markus Pesonen | Zendy; Sayani Majumdar | Zendy; H. Huhtinen | Zendy; P. Paturi | Zendy; Himadri S. Majumdar | Zendy; Ronald Österbacka | Zendy

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Effects of conjugated polymer on the magnetotransport properties in La0.7Sr0.3MnO3 ferromagnetic electrodes

Author(s) -

Markus Pesonen,

Sayani Majumdar,

H. Huhtinen,

P. Paturi,

Himadri S. Majumdar,

Ronald Österbacka

Publication year - 2013

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4800907

Subject(s) - magnetoresistance , materials science , ferromagnetism , colossal magnetoresistance , thin film , quartz , giant magnetoresistance , condensed matter physics , polymer , electrode , conjugated system , epitaxy , optoelectronics , nanotechnology , magnetic field , composite material , chemistry , physics , quantum mechanics , layer (electronics)

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

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