Observation of splintered Josephson vortices at grain boundaries in YBa2Cu3O7−δ

R.G. Mints; I. Papiashvili; J.R. Kirtley; H. Hilgenkamp; G. Hammerl; J. Mannhart

doi:10.1103/PhysRevLett.89.067004

Observation of splintered Josephson vortices at grain boundaries in YBa₂Cu₃O_7−δ

R.G. Mints, I. Papiashvili, J.R. Kirtley, H. Hilgenkamp, G. Hammerl, J. Mannhart

Faculty of Science and Technology

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Abstract

We have directly observed well-separated Josephson vortex splinters with unquantized magnetic flux at asymmetric 45° grain boundaries in YBa2Cu3O7-¿ films by imaging magnetic flux with scanning SQUID microscopy. The existence of these splinter vortices has been predicted and is well described by a model based on dx2-y2 pairing symmetry and facetting of the grain boundary on a length scale shorter than the Josephson penetration depth.

Original language	English
Article number	067004
Number of pages	4
Journal	Physical review letters
Volume	89
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.89.067004
Publication status	Published - 2002

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title = "Observation of splintered Josephson vortices at grain boundaries in YBa2Cu3O7−δ",

abstract = "We have directly observed well-separated Josephson vortex splinters with unquantized magnetic flux at asymmetric 45° grain boundaries in YBa2Cu3O7-¿ films by imaging magnetic flux with scanning SQUID microscopy. The existence of these splinter vortices has been predicted and is well described by a model based on dx2-y2 pairing symmetry and facetting of the grain boundary on a length scale shorter than the Josephson penetration depth.",

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AU - Mints, R.G.

AU - Papiashvili, I.

AU - Kirtley, J.R.

AU - Hilgenkamp, H.

AU - Hammerl, G.

AU - Mannhart, J.

PY - 2002

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AB - We have directly observed well-separated Josephson vortex splinters with unquantized magnetic flux at asymmetric 45° grain boundaries in YBa2Cu3O7-¿ films by imaging magnetic flux with scanning SQUID microscopy. The existence of these splinter vortices has been predicted and is well described by a model based on dx2-y2 pairing symmetry and facetting of the grain boundary on a length scale shorter than the Josephson penetration depth.

U2 - 10.1103/PhysRevLett.89.067004

DO - 10.1103/PhysRevLett.89.067004

M3 - Article

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JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

IS - 6

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ER -

Observation of splintered Josephson vortices at grain boundaries in YBa2Cu3O7−δ

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Observation of splintered Josephson vortices at grain boundaries in YBa₂Cu₃O_7−δ