Observation of splintered Josephson vortices at grain boundaries in YBa2Cu3O7-d

Mints, R.G. and Papiashvili, I. and Kirtley, J.R. and Hilgenkamp, H. and Hammerl, G. and Mannhart, J. (2002) Observation of splintered Josephson vortices at grain boundaries in YBa2Cu3O7-d. Physical Review Letters, 89 (6). 067004/1-067004/4. ISSN 0031-9007

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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.
Item Type:	Article
Copyright:	© 2002 The American Physical Society
Faculty:	Science and Technology (TNW)
Research Group:	Low Temperatures - Biomagnetism (LT)
Link to this item:	http://purl.utwente.nl/publications/43435
Official URL:	http://dx.doi.org/10.1103/PhysRevLett.89.067004
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Metis ID: 206647