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Search for spontaneous edge currents and vortex imaging in Sr2RuO4 mesostructures

Research output: Contribution to journalArticlepeer-review

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Search for spontaneous edge currents and vortex imaging in Sr2RuO4 mesostructures. / Curran, P. J.; Bending, S. J.; Desoky, W. M.; Gibbs, A. S.; Lee, S. L.; Mackenzie, A. P.

In: Physical Review. B, Condensed matter and materials physics, Vol. 89, No. 14, 144504, 09.04.2014.

Research output: Contribution to journalArticlepeer-review

Harvard

Curran, PJ, Bending, SJ, Desoky, WM, Gibbs, AS, Lee, SL & Mackenzie, AP 2014, 'Search for spontaneous edge currents and vortex imaging in Sr2RuO4 mesostructures', Physical Review. B, Condensed matter and materials physics, vol. 89, no. 14, 144504. https://doi.org/10.1103/PhysRevB.89.144504

APA

Curran, P. J., Bending, S. J., Desoky, W. M., Gibbs, A. S., Lee, S. L., & Mackenzie, A. P. (2014). Search for spontaneous edge currents and vortex imaging in Sr2RuO4 mesostructures. Physical Review. B, Condensed matter and materials physics, 89(14), [144504]. https://doi.org/10.1103/PhysRevB.89.144504

Vancouver

Curran PJ, Bending SJ, Desoky WM, Gibbs AS, Lee SL, Mackenzie AP. Search for spontaneous edge currents and vortex imaging in Sr2RuO4 mesostructures. Physical Review. B, Condensed matter and materials physics. 2014 Apr 9;89(14). 144504. https://doi.org/10.1103/PhysRevB.89.144504

Author

Curran, P. J. ; Bending, S. J. ; Desoky, W. M. ; Gibbs, A. S. ; Lee, S. L. ; Mackenzie, A. P. / Search for spontaneous edge currents and vortex imaging in Sr2RuO4 mesostructures. In: Physical Review. B, Condensed matter and materials physics. 2014 ; Vol. 89, No. 14.

Bibtex - Download

@article{c79e2010056748aab124b400f8e187a8,
title = "Search for spontaneous edge currents and vortex imaging in Sr2RuO4 mesostructures",
abstract = "Scanning Hall probe microscopy has been used to search for spontaneous fields at the well-defined edges of large mesoscopic disks, etched into the ab surface of very high quality single crystal Sr2RuO4. Such fields are predicted to exist at locations of broken translational symmetry as a consequence of the proposed two-component spin-triplet chiral order parameter dˆ = Δ0(kx ± iky ) zˆ. We find no evidence for such fields and impose an upper limit of ±2.5 mG on their magnitude. We do, however, observe an abrupt apparent loss of strong bulk pinning and a change in the screening behavior above H ∼ 25 Oe. At high fields (H >25 Oe) pronounced magnetic screening by the disks is very well described by a model containing only strong edge currents, and bulk critical currents do not appear to play a significant role. Our results are discussed in terms of relevant theoretical predictions.",
keywords = "High-temperature superconductors, Disks, Barriers, Surface",
author = "Curran, {P. J.} and Bending, {S. J.} and Desoky, {W. M.} and Gibbs, {A. S.} and Lee, {S. L.} and Mackenzie, {A. P.}",
note = "This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) in the United Kingdom under Grant No. EP/J010626/1.",
year = "2014",
month = apr,
day = "9",
doi = "10.1103/PhysRevB.89.144504",
language = "English",
volume = "89",
journal = "Physical Review. B, Condensed matter and materials physics",
issn = "1098-0121",
publisher = "American Physical Society",
number = "14",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Search for spontaneous edge currents and vortex imaging in Sr2RuO4 mesostructures

AU - Curran, P. J.

AU - Bending, S. J.

AU - Desoky, W. M.

AU - Gibbs, A. S.

AU - Lee, S. L.

AU - Mackenzie, A. P.

N1 - This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) in the United Kingdom under Grant No. EP/J010626/1.

PY - 2014/4/9

Y1 - 2014/4/9

N2 - Scanning Hall probe microscopy has been used to search for spontaneous fields at the well-defined edges of large mesoscopic disks, etched into the ab surface of very high quality single crystal Sr2RuO4. Such fields are predicted to exist at locations of broken translational symmetry as a consequence of the proposed two-component spin-triplet chiral order parameter dˆ = Δ0(kx ± iky ) zˆ. We find no evidence for such fields and impose an upper limit of ±2.5 mG on their magnitude. We do, however, observe an abrupt apparent loss of strong bulk pinning and a change in the screening behavior above H ∼ 25 Oe. At high fields (H >25 Oe) pronounced magnetic screening by the disks is very well described by a model containing only strong edge currents, and bulk critical currents do not appear to play a significant role. Our results are discussed in terms of relevant theoretical predictions.

AB - Scanning Hall probe microscopy has been used to search for spontaneous fields at the well-defined edges of large mesoscopic disks, etched into the ab surface of very high quality single crystal Sr2RuO4. Such fields are predicted to exist at locations of broken translational symmetry as a consequence of the proposed two-component spin-triplet chiral order parameter dˆ = Δ0(kx ± iky ) zˆ. We find no evidence for such fields and impose an upper limit of ±2.5 mG on their magnitude. We do, however, observe an abrupt apparent loss of strong bulk pinning and a change in the screening behavior above H ∼ 25 Oe. At high fields (H >25 Oe) pronounced magnetic screening by the disks is very well described by a model containing only strong edge currents, and bulk critical currents do not appear to play a significant role. Our results are discussed in terms of relevant theoretical predictions.

KW - High-temperature superconductors

KW - Disks

KW - Barriers

KW - Surface

U2 - 10.1103/PhysRevB.89.144504

DO - 10.1103/PhysRevB.89.144504

M3 - Article

VL - 89

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

SN - 1098-0121

IS - 14

M1 - 144504

ER -

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