Evidence for anisotropic triplet superconductor order parameter in half-metallic ferromagnetic La 0.7Ca 0.3Mn 3O proximity coupled to superconducting Pr 1.85Ce 0.15CuO 4

Y. Kalcheim; O. Millo; M. Egilmez; J. W.A. Robinson; M. G. Blamire

doi:10.1103/PhysRevB.85.104504

Evidence for anisotropic triplet superconductor order parameter in half-metallic ferromagnetic La _0.7Ca _0.3Mn ₃O proximity coupled to superconducting Pr _1.85Ce _0.15CuO ₄

Y. Kalcheim^*, O. Millo, M. Egilmez, J. W.A. Robinson, M. G. Blamire

^*Corresponding author for this work

Racah Institute of Physics

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

58 Scopus citations

Abstract

Scanning tunneling spectroscopy measurements performed on La _0.7Ca _0.3Mn ₃O (LCMO) films epitaxially grown on Pr _1.85Ce _0.15CuO ₄ (PCCO) reveal localized penetration of superconductivity into the LCMO up to distances much larger than is possible for Cooper pairs in a singlet spin state to exist. This long-range proximity effect is manifested in the tunneling spectra as gaps and, less abundantly, as zero-bias conductance peaks (ZBCPs). Since ZBCPs were not found on the bare PCCO films, their appearance is attributed to an anisotropic (p wave or d wave) triplet-pairing superconductor order parameter induced in the LCMO.

Original language	American English
Article number	104504
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	85
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.85.104504
State	Published - 7 Mar 2012

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Kalcheim, Y., Millo, O., Egilmez, M., Robinson, J. W. A., & Blamire, M. G. (2012). Evidence for anisotropic triplet superconductor order parameter in half-metallic ferromagnetic La _0.7Ca _0.3Mn ₃O proximity coupled to superconducting Pr _1.85Ce _0.15CuO ₄ Physical Review B - Condensed Matter and Materials Physics, 85(10), Article 104504. https://doi.org/10.1103/PhysRevB.85.104504

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title = "Evidence for anisotropic triplet superconductor order parameter in half-metallic ferromagnetic La 0.7Ca 0.3Mn 3O proximity coupled to superconducting Pr 1.85Ce 0.15CuO 4 ",

abstract = "Scanning tunneling spectroscopy measurements performed on La 0.7Ca 0.3Mn 3O (LCMO) films epitaxially grown on Pr 1.85Ce 0.15CuO 4 (PCCO) reveal localized penetration of superconductivity into the LCMO up to distances much larger than is possible for Cooper pairs in a singlet spin state to exist. This long-range proximity effect is manifested in the tunneling spectra as gaps and, less abundantly, as zero-bias conductance peaks (ZBCPs). Since ZBCPs were not found on the bare PCCO films, their appearance is attributed to an anisotropic (p wave or d wave) triplet-pairing superconductor order parameter induced in the LCMO.",

author = "Y. Kalcheim and O. Millo and M. Egilmez and Robinson, {J. W.A.} and Blamire, {M. G.}",

year = "2012",

month = mar,

day = "7",

doi = "10.1103/PhysRevB.85.104504",

language = "American English",

volume = "85",

journal = "Physical Review B - Condensed Matter and Materials Physics",

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Kalcheim, Y, Millo, O, Egilmez, M, Robinson, JWA & Blamire, MG 2012, 'Evidence for anisotropic triplet superconductor order parameter in half-metallic ferromagnetic La _0.7Ca _0.3Mn ₃O proximity coupled to superconducting Pr _1.85Ce _0.15CuO ₄ ', Physical Review B - Condensed Matter and Materials Physics, vol. 85, no. 10, 104504. https://doi.org/10.1103/PhysRevB.85.104504

Evidence for anisotropic triplet superconductor order parameter in half-metallic ferromagnetic La _0.7Ca _0.3Mn ₃O proximity coupled to superconducting Pr _1.85Ce _0.15CuO ₄ . / Kalcheim, Y.; Millo, O.; Egilmez, M. et al.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 85, No. 10, 104504, 07.03.2012.

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

TY - JOUR

T1 - Evidence for anisotropic triplet superconductor order parameter in half-metallic ferromagnetic La 0.7Ca 0.3Mn 3O proximity coupled to superconducting Pr 1.85Ce 0.15CuO 4

AU - Kalcheim, Y.

AU - Millo, O.

AU - Egilmez, M.

AU - Robinson, J. W.A.

AU - Blamire, M. G.

PY - 2012/3/7

Y1 - 2012/3/7

N2 - Scanning tunneling spectroscopy measurements performed on La 0.7Ca 0.3Mn 3O (LCMO) films epitaxially grown on Pr 1.85Ce 0.15CuO 4 (PCCO) reveal localized penetration of superconductivity into the LCMO up to distances much larger than is possible for Cooper pairs in a singlet spin state to exist. This long-range proximity effect is manifested in the tunneling spectra as gaps and, less abundantly, as zero-bias conductance peaks (ZBCPs). Since ZBCPs were not found on the bare PCCO films, their appearance is attributed to an anisotropic (p wave or d wave) triplet-pairing superconductor order parameter induced in the LCMO.

AB - Scanning tunneling spectroscopy measurements performed on La 0.7Ca 0.3Mn 3O (LCMO) films epitaxially grown on Pr 1.85Ce 0.15CuO 4 (PCCO) reveal localized penetration of superconductivity into the LCMO up to distances much larger than is possible for Cooper pairs in a singlet spin state to exist. This long-range proximity effect is manifested in the tunneling spectra as gaps and, less abundantly, as zero-bias conductance peaks (ZBCPs). Since ZBCPs were not found on the bare PCCO films, their appearance is attributed to an anisotropic (p wave or d wave) triplet-pairing superconductor order parameter induced in the LCMO.

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VL - 85

JO - Physical Review B - Condensed Matter and Materials Physics

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Evidence for anisotropic triplet superconductor order parameter in half-metallic ferromagnetic La _0.7Ca _0.3Mn ₃O proximity coupled to superconducting Pr _1.85Ce _0.15CuO ₄

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