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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Non-reciprocal electronic transport in a material occurs if both timereversal and inversion symmetries are broken. The superconducting diode effect(SDE) is an exotic manifestation of this type of behavior where the criticalcurrent for positive and negative currents are mismatched, as recently observedin some non-centrosymmetric superconductors with a magnetic field. Here, wedemonstrate a SDE in non-magnetic Nb/Ru/Sr$_2$RuO$_4$ Josephson junctionswithout applying an external magnetic field. The cooling history dependence ofthe SDE suggests that time-reversal symmetry is intrinsically broken by thesuperconducting phase of Sr$_2$RuO$_4$. Applied magnetic fields modify the SDEdynamically by randomly changing the sign of the non-reciprocity. We propose amodel for such a topological junction with a conventional superconductorsurrounded by a chiral superconductor with broken time reversal symmetry.

Spontaneous superconducting diode effect in non-magnetic Nb/Ru/Sr$_2$RuO$_4$ topological junctions