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

Markus Pesonen; S Majumdar; H Huhtinen; P Paturi; HS Majumdar; Ronald Österbacka

doi:10.1063/1.4800907

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

Markus Pesonen, S Majumdar, H Huhtinen, P Paturi, HS Majumdar, Ronald Österbacka

Research output: Contribution to journal › Article › Scientific › peer-review

5 Citations (Scopus)

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. 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]

Original language	Undefined/Unknown
Pages (from-to)	–
Number of pages	8
Journal	AIP Advances
Volume	3
Issue number	4
DOIs	https://doi.org/10.1063/1.4800907
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed

Keywords

colossal magnetoresistance
conducting polymers
ferromagnetic materials
interface magnetism
lanthanum compounds
magnetic epitaxial layers
organic semiconductors
semiconductor-insulator boundaries
spin polarised transport
strontium compounds

Access to Document

10.1063/1.4800907

Cite this

@article{e57a2357887147b3b006c6fff4891b4e,

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. 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]",

keywords = "colossal magnetoresistance, conducting polymers, ferromagnetic materials, interface magnetism, lanthanum compounds, magnetic epitaxial layers, organic semiconductors, semiconductor-insulator boundaries, spin polarised transport, strontium compounds, colossal magnetoresistance, conducting polymers, ferromagnetic materials, interface magnetism, lanthanum compounds, magnetic epitaxial layers, organic semiconductors, semiconductor-insulator boundaries, spin polarised transport, strontium compounds, colossal magnetoresistance, conducting polymers, ferromagnetic materials, interface magnetism, lanthanum compounds, magnetic epitaxial layers, organic semiconductors, semiconductor-insulator boundaries, spin polarised transport, strontium compounds",

author = "Markus Pesonen and S Majumdar and H Huhtinen and P Paturi and HS Majumdar and Ronald {\"O}sterbacka",

year = "2013",

doi = "10.1063/1.4800907",

language = "Odefinierat/ok{\"a}nt",

volume = "3",

pages = "–",

journal = "AIP Advances",

issn = "2158-3226",

publisher = "American Institute of Physics",

number = "4",

}

TY - JOUR

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

AU - Pesonen, Markus

AU - Majumdar, S

AU - Huhtinen, H

AU - Paturi, P

AU - Majumdar, HS

AU - Österbacka, Ronald

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. 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]

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. 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]

KW - colossal magnetoresistance

KW - conducting polymers

KW - ferromagnetic materials

KW - interface magnetism

KW - lanthanum compounds

KW - magnetic epitaxial layers

KW - organic semiconductors

KW - semiconductor-insulator boundaries

KW - spin polarised transport

KW - strontium compounds

KW - colossal magnetoresistance

KW - conducting polymers

KW - ferromagnetic materials

KW - interface magnetism

KW - lanthanum compounds

KW - magnetic epitaxial layers

KW - organic semiconductors

KW - semiconductor-insulator boundaries

KW - spin polarised transport

KW - strontium compounds

KW - colossal magnetoresistance

KW - conducting polymers

KW - ferromagnetic materials

KW - interface magnetism

KW - lanthanum compounds

KW - magnetic epitaxial layers

KW - organic semiconductors

KW - semiconductor-insulator boundaries

KW - spin polarised transport

KW - strontium compounds

U2 - 10.1063/1.4800907

DO - 10.1063/1.4800907

M3 - Artikel

SN - 2158-3226

VL - 3

SP - –

JO - AIP Advances

JF - AIP Advances

IS - 4

ER -