Strongly bias-dependent tunnel magnetoresistance in manganite spin filter tunnel junctions

Bhagwati Prasad; Wenrui Zhang; Jie Jian; Haiyan Wang; Mark G. Blamire

doi:10.1002/adma.201405147

Strongly bias-dependent tunnel magnetoresistance in manganite spin filter tunnel junctions

Bhagwati Prasad^*
, Wenrui Zhang
, Jie Jian
, Haiyan Wang
, Mark G. Blamire

^*Corresponding author for this work

University of Cambridge
Texas A&M University

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

16 Scopus citations

Abstract

A highly unconventional bias-dependent tunnel magnetoresistance (TMR) response is observed in Sm_0.75Sr_0.25MnO₃-based nanopillar spin filter tunnel junctions (SFTJs) with two different behaviors in two different thickness regimes of the barrier layer. Thinner barrier devices exhibit conventional SFTJ behaviors; however, for larger barrier thicknesses, the TMR-bias dependence is more complex and reverses sign at higher bias.

Original language	English
Pages (from-to)	3079-3084
Number of pages	6
Journal	Advanced Materials
Volume	27
Issue number	19
DOIs	https://doi.org/10.1002/adma.201405147
State	Published - 20 May 2015
Externally published	Yes

Keywords

Coulomb blockade
Fowler-Nordheim tunneling
manganites
spin filter
tunnel magnetoresistance

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10.1002/adma.201405147

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@article{6aff66fe24754f04b09af6de78d2db67,

title = "Strongly bias-dependent tunnel magnetoresistance in manganite spin filter tunnel junctions",

abstract = "A highly unconventional bias-dependent tunnel magnetoresistance (TMR) response is observed in Sm0.75Sr0.25MnO3-based nanopillar spin filter tunnel junctions (SFTJs) with two different behaviors in two different thickness regimes of the barrier layer. Thinner barrier devices exhibit conventional SFTJ behaviors; however, for larger barrier thicknesses, the TMR-bias dependence is more complex and reverses sign at higher bias.",

keywords = "Coulomb blockade, Fowler-Nordheim tunneling, manganites, spin filter, tunnel magnetoresistance",

author = "Bhagwati Prasad and Wenrui Zhang and Jie Jian and Haiyan Wang and Blamire, \{Mark G.\}",

note = "Publisher Copyright: {\textcopyright} 2015 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.",

year = "2015",

month = may,

day = "20",

doi = "10.1002/adma.201405147",

language = "英语",

volume = "27",

pages = "3079--3084",

journal = "Advanced Materials",

issn = "0935-9648",

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number = "19",

}

TY - JOUR

T1 - Strongly bias-dependent tunnel magnetoresistance in manganite spin filter tunnel junctions

AU - Prasad, Bhagwati

AU - Zhang, Wenrui

AU - Jian, Jie

AU - Wang, Haiyan

AU - Blamire, Mark G.

PY - 2015/5/20

Y1 - 2015/5/20

N2 - A highly unconventional bias-dependent tunnel magnetoresistance (TMR) response is observed in Sm0.75Sr0.25MnO3-based nanopillar spin filter tunnel junctions (SFTJs) with two different behaviors in two different thickness regimes of the barrier layer. Thinner barrier devices exhibit conventional SFTJ behaviors; however, for larger barrier thicknesses, the TMR-bias dependence is more complex and reverses sign at higher bias.

AB - A highly unconventional bias-dependent tunnel magnetoresistance (TMR) response is observed in Sm0.75Sr0.25MnO3-based nanopillar spin filter tunnel junctions (SFTJs) with two different behaviors in two different thickness regimes of the barrier layer. Thinner barrier devices exhibit conventional SFTJ behaviors; however, for larger barrier thicknesses, the TMR-bias dependence is more complex and reverses sign at higher bias.

KW - Coulomb blockade

KW - Fowler-Nordheim tunneling

KW - manganites

KW - spin filter

KW - tunnel magnetoresistance

UR - https://www.scopus.com/pages/publications/85027941939

U2 - 10.1002/adma.201405147

DO - 10.1002/adma.201405147

M3 - 文章

AN - SCOPUS:85027941939

SN - 0935-9648

VL - 27

SP - 3079

EP - 3084

JO - Advanced Materials

JF - Advanced Materials

IS - 19

ER -

Strongly bias-dependent tunnel magnetoresistance in manganite spin filter tunnel junctions

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Keywords

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