English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study the temperature dependence of the in-plane magnetoresistance rho(ab)(T) in untwinned YBa2Cu3O7-delta single crystals with the optimal oxygen content and with a small deficit of oxygen atoms at different angles between the external magnetic field 15 kOe and the ab-planes alpha. We found that at high temperatures in the pseudogap region external magnetic field does not affect the rho(ab)(T) but it broadens transitional region T-c - T-c0 from 0.3 K at zero field and alpha = 0 to approximately 6 K at alpha = 60 degrees in the field. In case of optimal doping the function rho(ab)(T) display a 3D to 2D dimensional crossover when temperature decreases from T-c to T-c0 and scaling near the T-c0 which we relate to the flux-flow and vortex-lattice melting. In the underdoped sample the vortices are effectively pinned by the random oxygen vacancies and the function rho(ab)(T) in transitional region has smooth tails without any traces of crossover and scaling.

acta physica polonica. a

Magnetoresistance and Intrinsic Pinning of Vortices in the Untwinned YBa2Cu3O7 - δSingle Crystals with Optimal Oxygen Content and a Small Deviation from the Oxygen Stoichiometry