Induced antiferromagnetism and large magnetoresistance in RuSr2(Nd,Y,Ce)2Cu2O10-d ruthenocuprates

A. C. McLaughlin, F. Sher, S. A. J. Kimber, J. P. Attfield

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

RuSr2(Nd,Y,Ce)2Cu2O10-d ruthenocuprates have been studied by neutron diffraction, and magnetotransport and magnetization measurements, and the electronic phase diagram is reported. Separate Ru and Cu spin ordering transitions are observed, with spontaneous Cu antiferromagnetic order for low hole-doping levels p, and a distinct, induced-antiferromagnetic Cu spin phase in the 0.02<p<0.06 pseudogap region. This ordering gives rise to large negative magnetoresistances which vary systematically with p in the RuSr2Nd1.8-xY0.2CexCu2O10-d series. A collapse of the magnetoresistance and magnetization in the presuperconducting region may signify the onset of superconducting fluctuations.
Original languageEnglish
Article number094514
Number of pages10
JournalPhysical Review B Condensed Matter and Materials Physics
Volume76
Issue number9
DOIs
Publication statusPublished - 19 Sep 2007

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Antiferromagnetism
antiferromagnetism
Magnetoresistance
Magnetization
Galvanomagnetic effects
magnetization
Neutron diffraction
Phase diagrams
neutron diffraction
Doping (additives)
phase diagrams
electronics

Keywords

  • transition-temperature superconductor
  • weak ferromagnetism
  • magnetic-structure
  • RUSR2GDCU2O8
  • coexistence
  • crystal
  • neutron
  • density
  • system

Cite this

Induced antiferromagnetism and large magnetoresistance in RuSr2(Nd,Y,Ce)2Cu2O10-d ruthenocuprates. / McLaughlin, A. C.; Sher, F.; Kimber, S. A. J.; Attfield, J. P.

In: Physical Review B Condensed Matter and Materials Physics , Vol. 76, No. 9, 094514, 19.09.2007.

Research output: Contribution to journalArticle

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T1 - Induced antiferromagnetism and large magnetoresistance in RuSr2(Nd,Y,Ce)2Cu2O10-d ruthenocuprates

AU - McLaughlin, A. C.

AU - Sher, F.

AU - Kimber, S. A. J.

AU - Attfield, J. P.

PY - 2007/9/19

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N2 - RuSr2(Nd,Y,Ce)2Cu2O10-d ruthenocuprates have been studied by neutron diffraction, and magnetotransport and magnetization measurements, and the electronic phase diagram is reported. Separate Ru and Cu spin ordering transitions are observed, with spontaneous Cu antiferromagnetic order for low hole-doping levels p, and a distinct, induced-antiferromagnetic Cu spin phase in the 0.02<p<0.06 pseudogap region. This ordering gives rise to large negative magnetoresistances which vary systematically with p in the RuSr2Nd1.8-xY0.2CexCu2O10-d series. A collapse of the magnetoresistance and magnetization in the presuperconducting region may signify the onset of superconducting fluctuations.

AB - RuSr2(Nd,Y,Ce)2Cu2O10-d ruthenocuprates have been studied by neutron diffraction, and magnetotransport and magnetization measurements, and the electronic phase diagram is reported. Separate Ru and Cu spin ordering transitions are observed, with spontaneous Cu antiferromagnetic order for low hole-doping levels p, and a distinct, induced-antiferromagnetic Cu spin phase in the 0.02<p<0.06 pseudogap region. This ordering gives rise to large negative magnetoresistances which vary systematically with p in the RuSr2Nd1.8-xY0.2CexCu2O10-d series. A collapse of the magnetoresistance and magnetization in the presuperconducting region may signify the onset of superconducting fluctuations.

KW - transition-temperature superconductor

KW - weak ferromagnetism

KW - magnetic-structure

KW - RUSR2GDCU2O8

KW - coexistence

KW - crystal

KW - neutron

KW - density

KW - system

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JO - Physical Review B Condensed Matter and Materials Physics

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