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Showing papers by "Irina V. Grigorieva published in 1993"


Journal ArticleDOI
TL;DR: A vortex structure consisting of vortex chains embedded into the flux-line lattice (FLL) has been observed in YBa 2 (Cu 1-x Al x ) 3 O 7-δ single crystals using the Bitter decoration technique, demonstrating an essentially different vortex state which, unlike Bi 2 Sr 2 CaCu 2 O 8+δ , originates from the attractive vortex-vortex interaction.
Abstract: A vortex structure consisting of vortex chains embedded into the flux-line lattice (FLL) has been observed in YBa 2 (Cu 1-x Al x ) 3 O 7-δ single crystals using the Bitter decoration technique. This structure formed in magnetic fields applied at a high angle, between 50 o and 80 o , with respect to the c axis. Although the vortex chains-FLL mixture looked similar to the vortex structure observed earlier in the highly anisotropic Bi 2 Sr 2 CaCu 2 O 8+δ , its evolution with the tilt angle and the applied field demonstrated that it represents an essentially different vortex state which, unlike Bi 2 Sr 2 CaCu 2 O 8+δ , originates from the attractive vortex-vortex interaction

20 citations