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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We prepared epitaxial ferromagnetic manganite films on bicrystal substratesby pulsed laser ablation. Their low- and high-field magnetoresistance (MR) wasmeasured as a function of magnetic field, temperature and current. At lowtemperatures hysteretic changes in resistivity up to 70% due to switching ofmagnetic domains at the coercitive field are observed. The strongly non-ohmicbehavior of the current-voltage leads to a complete suppression of the MReffect at high bias currents with the identical current dependence at low andhigh magnetic fields. We discuss the data in view of tunneling and mesoscalemagnetic transport models and propose an explicit dependence of the spinpolarization on the applied current in the grain boundary region.Comment: 5 pages, to appear in J. Appl. Phy

Current dependence of grain boundary magnetoresistance in La0.67Ca0.33MnO3 films