Pseudo spin-valve behavior in oxide ferromagnet/superconductor/ferromagnet trilayers

BSH Pang; C Bell; RI Tomov; JH Durrell; MG Blamire; Chris Bell

doi:10.1016/j.physleta.2005.04.072

Pseudo spin-valve behavior in oxide ferromagnet/superconductor/ferromagnet trilayers

BSH Pang^*, C Bell, RI Tomov, JH Durrell, MG Blamire, Chris Bell

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

10 Citations (Scopus)

Abstract

La0.7Ca0.3MnO3[YBa2Cu3O7-delta/La0.67Sr0.33MnO3 heterostructural devices with double coercivity have been fabricated. The superconducting critical current (I-c) and critical temperature in both parallel (P) and antiparallel (AP) magnetic configurations remained unchanged within our measurement limits. This observation is contrary to results obtained elsewhere using similar metallic systems. A pseudo spin-valve magnetoresistive (MR) characteristic was observed at bias current (I-bias) similar to I-c at temperatures below the onset of superconductivity. The effect increased with decreasing temperature and Ibias and can be explained using the assumption of the electron spin-charge separation. (c) 2005 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	313-319
Number of pages	7
Journal	Physics Letters A
Volume	341
Issue number	1-4
DOIs	https://doi.org/10.1016/j.physleta.2005.04.072
Publication status	Published - 20 Jun 2005

Keywords

spin valve
giant magnetoresistance
ferromagnetism
superconductivity
SUPERCONDUCTOR
FERROMAGNET
HETEROSTRUCTURES
INJECTION
FILMS
MAGNETORESISTANCE
SUPERLATTICES
MULTILAYERS
MAGNETISM
CURRENTS

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@article{af6d6facdf4e489da7cd374833fb7a69,

title = "Pseudo spin-valve behavior in oxide ferromagnet/superconductor/ferromagnet trilayers",

abstract = "La0.7Ca0.3MnO3[YBa2Cu3O7-delta/La0.67Sr0.33MnO3 heterostructural devices with double coercivity have been fabricated. The superconducting critical current (I-c) and critical temperature in both parallel (P) and antiparallel (AP) magnetic configurations remained unchanged within our measurement limits. This observation is contrary to results obtained elsewhere using similar metallic systems. A pseudo spin-valve magnetoresistive (MR) characteristic was observed at bias current (I-bias) similar to I-c at temperatures below the onset of superconductivity. The effect increased with decreasing temperature and Ibias and can be explained using the assumption of the electron spin-charge separation. (c) 2005 Elsevier B.V. All rights reserved.",

keywords = "spin valve, giant magnetoresistance, ferromagnetism, superconductivity, SUPERCONDUCTOR, FERROMAGNET, HETEROSTRUCTURES, INJECTION, FILMS, MAGNETORESISTANCE, SUPERLATTICES, MULTILAYERS, MAGNETISM, CURRENTS",

author = "BSH Pang and C Bell and RI Tomov and JH Durrell and MG Blamire and Chris Bell",

year = "2005",

month = jun,

day = "20",

doi = "10.1016/j.physleta.2005.04.072",

language = "English",

volume = "341",

pages = "313--319",

journal = "Physics Letters A",

issn = "0375-9601",

publisher = "North-Holland Publishing Company",

number = "1-4",

}

TY - JOUR

T1 - Pseudo spin-valve behavior in oxide ferromagnet/superconductor/ferromagnet trilayers

AU - Pang, BSH

AU - Bell, C

AU - Tomov, RI

AU - Durrell, JH

AU - Blamire, MG

AU - Bell, Chris

PY - 2005/6/20

Y1 - 2005/6/20

N2 - La0.7Ca0.3MnO3[YBa2Cu3O7-delta/La0.67Sr0.33MnO3 heterostructural devices with double coercivity have been fabricated. The superconducting critical current (I-c) and critical temperature in both parallel (P) and antiparallel (AP) magnetic configurations remained unchanged within our measurement limits. This observation is contrary to results obtained elsewhere using similar metallic systems. A pseudo spin-valve magnetoresistive (MR) characteristic was observed at bias current (I-bias) similar to I-c at temperatures below the onset of superconductivity. The effect increased with decreasing temperature and Ibias and can be explained using the assumption of the electron spin-charge separation. (c) 2005 Elsevier B.V. All rights reserved.

AB - La0.7Ca0.3MnO3[YBa2Cu3O7-delta/La0.67Sr0.33MnO3 heterostructural devices with double coercivity have been fabricated. The superconducting critical current (I-c) and critical temperature in both parallel (P) and antiparallel (AP) magnetic configurations remained unchanged within our measurement limits. This observation is contrary to results obtained elsewhere using similar metallic systems. A pseudo spin-valve magnetoresistive (MR) characteristic was observed at bias current (I-bias) similar to I-c at temperatures below the onset of superconductivity. The effect increased with decreasing temperature and Ibias and can be explained using the assumption of the electron spin-charge separation. (c) 2005 Elsevier B.V. All rights reserved.

KW - spin valve

KW - giant magnetoresistance

KW - ferromagnetism

KW - superconductivity

KW - SUPERCONDUCTOR

KW - FERROMAGNET

KW - HETEROSTRUCTURES

KW - INJECTION

KW - FILMS

KW - MAGNETORESISTANCE

KW - SUPERLATTICES

KW - MULTILAYERS

KW - MAGNETISM

KW - CURRENTS

U2 - 10.1016/j.physleta.2005.04.072

DO - 10.1016/j.physleta.2005.04.072

M3 - Article (Academic Journal)

SN - 0375-9601

VL - 341

SP - 313

EP - 319

JO - Physics Letters A

JF - Physics Letters A

IS - 1-4

ER -

Pseudo spin-valve behavior in oxide ferromagnet/superconductor/ferromagnet trilayers

Abstract

Keywords

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