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

In this Chapter we review our latest results on magnetic (AC susceptibility)and transport (resistivity) properties of Pr1.85Ce0.15CuO4 (PCCO) andSm1.85Ce0.15CuO4 (SCCO) thin films grown by pulsed laser deposition technique.Three main topics of our studies will be covered. We start with a thoroughdiscussion of the pairing symmetry mechanisms in optimally-doped SCCO thinfilms based on the extracted with high accuracy temperature profiles ofpenetration depth. In particular, we found that above and below a crossovertemperature T*=0.22T_C, our films are best-fitted by a linear and quadraticdependencies, respectively, with physically reasonable values of d-wave nodegap parameter and paramagnetic impurity scattering rate. Our next topic isrelated to the flux distribution in our films. More precisely, we present acomparative study on their pinning ability at low magnetic fields extractedfrom their AC susceptibilities. Depending on the level of homogeneity of ourfilms, two different types of the irreversibility line have been found. Theobtained results are described via the critical-state model taking into accountthe low-field grain-boundary pinning. And finally, we demonstrate our recentresults on the normal state temperature behavior of resistivity R(T) for thehigh-quality optimally-doped SCCO thin films. In addition to the expectedcontributions from the electron-phonon and electron-electron scatteringprocesses, we also observed an unusual step-like behavior of R(T) around T=87Kwhich we attributed the to the manifestation of thermal excitations due to spinfluctuations induced by Sm3+ moments through Cu2+-Sm3+ interaction.

Magnetic and transport properties of electron-doped superconducting thin films: Pairing symmetry, pinning and spin fluctuations