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 measure the inverse spin Hall effect of Cu$_{1-x}$Ir$_{x}$ thin films onyttrium iron garnet over a wide range of Ir concentrations ($0.05 \leqslant x\leqslant 0.7$). Spin currents are triggered through the spin Seebeck effect,either by a DC temperature gradient or by ultrafast optical heating of themetal layer. The spin Hall current is detected by, respectively, electricalcontacts or measurement of the emitted THz radiation. With both approaches, wereveal the same Ir concentration dependence that follows a novel complex,non-monotonous behavior as compared to previous studies. For small Irconcentrations a signal minimum is observed, while a pronounced maximum appearsnear the equiatomic composition. We identify this behavior as originating fromthe interplay of different spin Hall mechanisms as well as aconcentration-dependent variation of the integrated spin current density inCu$_{1-x}$Ir$_{x}$. The coinciding results obtained for DC and ultrafaststimuli show that the studied material allows for efficient spin-to-chargeconversion even on ultrafast timescales, thus enabling a transfer ofestablished spintronic measurement schemes into the terahertz regime.

Complex THz and DC inverse spin Hall effect in YIG/Cu$_{1-x}$Ir$_{x}$ bilayers across a wide concentration range