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

M. Pesonen (Corresponding Author), S. Majumdar, H. Huhtinen, P. Paturi, Himadri Majumdar, R. Österbacka

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Abstract

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.
Original languageEnglish
Article number042102
JournalAIP Advances
Volume3
Issue number4
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

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quartz
electrodes
polymers
organic semiconductors
emerging
injection
thin films

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@article{90386a879f04497b9bafdadf6f7ebc09,
title = "Effects of conjugated polymer on the magnetotransport properties in La0.7Sr0.3MnO3 ferromagnetic electrodes",
abstract = "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.",
author = "M. Pesonen and S. Majumdar and H. Huhtinen and P. Paturi and Himadri Majumdar and R. {\"O}sterbacka",
year = "2013",
doi = "10.1063/1.4800907",
language = "English",
volume = "3",
journal = "AIP Advances",
issn = "2158-3226",
publisher = "American Institute of Physics AIP",
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Effects of conjugated polymer on the magnetotransport properties in La0.7Sr0.3MnO3 ferromagnetic electrodes. / Pesonen, M. (Corresponding Author); Majumdar, S.; Huhtinen, H.; Paturi, P.; Majumdar, Himadri; Österbacka, R.

In: AIP Advances, Vol. 3, No. 4, 042102, 2013.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effects of conjugated polymer on the magnetotransport properties in La0.7Sr0.3MnO3 ferromagnetic electrodes

AU - Pesonen, M.

AU - Majumdar, S.

AU - Huhtinen, H.

AU - Paturi, P.

AU - Majumdar, Himadri

AU - Österbacka, R.

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

U2 - 10.1063/1.4800907

DO - 10.1063/1.4800907

M3 - Article

VL - 3

JO - AIP Advances

JF - AIP Advances

SN - 2158-3226

IS - 4

M1 - 042102

ER -