Critical current suppression in a superconductor by injection of spin-polarized carriers from a ferromagnet

V. A. Vas'ko; V. A. Larkin; P. A. Kraus; K. R. Nikolaev; D. E. Grupp; C. A. Nordman; Allen M Goldman

doi:10.1103/PhysRevLett.78.1134

Critical current suppression in a superconductor by injection of spin-polarized carriers from a ferromagnet

V. A. Vas'ko, V. A. Larkin, P. A. Kraus, K. R. Nikolaev, D. E. Grupp, C. A. Nordman, Allen M Goldman

Physics and Astronomy (Twin Cities)

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

272 Scopus citations

Abstract

The critical current of a thin film of the high-T_csuperconductor DyBa₂Cu₃O₇, when incorporated in a heterostructure in which it is separated from a ferromagnetic underlayer of La_2/3Sr_1/3MnO₃by an undoped ultrathin La₂CuO₄film, has been found to be strongly suppressed by current flowing in the ferromagnetic film. A control experiment with a Au film replacing the ferromagnet did not show such a response, and resistive heating was ruled out by additional measurements. The effect would appear to be caused by pair breaking associated with spin-polarized carriers being injected into the superconductor.

Original language	English (US)
Pages (from-to)	1134-1137
Number of pages	4
Journal	Physical review letters
Volume	78
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.78.1134
State	Published - Feb 10 1997

Bibliographical note

Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

Access

10.1103/PhysRevLett.78.1134

OpenUrl availability

Full text

Cite this

@article{0d19d2b745284b51a197ef9cf4850b56,

title = "Critical current suppression in a superconductor by injection of spin-polarized carriers from a ferromagnet",

abstract = "The critical current of a thin film of the high-Tcsuperconductor DyBa2Cu3O7, when incorporated in a heterostructure in which it is separated from a ferromagnetic underlayer of La2/3Sr1/3MnO3by an undoped ultrathin La2CuO4film, has been found to be strongly suppressed by current flowing in the ferromagnetic film. A control experiment with a Au film replacing the ferromagnet did not show such a response, and resistive heating was ruled out by additional measurements. The effect would appear to be caused by pair breaking associated with spin-polarized carriers being injected into the superconductor.",

author = "Vas'ko, {V. A.} and Larkin, {V. A.} and Kraus, {P. A.} and Nikolaev, {K. R.} and Grupp, {D. E.} and Nordman, {C. A.} and Goldman, {Allen M}",

year = "1997",

month = feb,

day = "10",

doi = "10.1103/PhysRevLett.78.1134",

language = "English (US)",

volume = "78",

pages = "1134--1137",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Critical current suppression in a superconductor by injection of spin-polarized carriers from a ferromagnet

AU - Vas'ko, V. A.

AU - Larkin, V. A.

AU - Kraus, P. A.

AU - Nikolaev, K. R.

AU - Grupp, D. E.

AU - Nordman, C. A.

AU - Goldman, Allen M

PY - 1997/2/10

Y1 - 1997/2/10

N2 - The critical current of a thin film of the high-Tcsuperconductor DyBa2Cu3O7, when incorporated in a heterostructure in which it is separated from a ferromagnetic underlayer of La2/3Sr1/3MnO3by an undoped ultrathin La2CuO4film, has been found to be strongly suppressed by current flowing in the ferromagnetic film. A control experiment with a Au film replacing the ferromagnet did not show such a response, and resistive heating was ruled out by additional measurements. The effect would appear to be caused by pair breaking associated with spin-polarized carriers being injected into the superconductor.

AB - The critical current of a thin film of the high-Tcsuperconductor DyBa2Cu3O7, when incorporated in a heterostructure in which it is separated from a ferromagnetic underlayer of La2/3Sr1/3MnO3by an undoped ultrathin La2CuO4film, has been found to be strongly suppressed by current flowing in the ferromagnetic film. A control experiment with a Au film replacing the ferromagnet did not show such a response, and resistive heating was ruled out by additional measurements. The effect would appear to be caused by pair breaking associated with spin-polarized carriers being injected into the superconductor.

UR - http://www.scopus.com/inward/record.url?scp=0031075289&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031075289&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.78.1134

DO - 10.1103/PhysRevLett.78.1134

M3 - Article

AN - SCOPUS:0031075289

SN - 0031-9007

VL - 78

SP - 1134

EP - 1137

JO - Physical review letters

JF - Physical review letters

IS - 6

ER -

Critical current suppression in a superconductor by injection of spin-polarized carriers from a ferromagnet

Abstract

Bibliographical note

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this