Modulation of superconductivity by spin canting in a hybrid antiferromagnet/superconductor oxide

TL;DR

This study investigates how spin canting in a hybrid antiferromagnet/superconductor oxide affects superconductivity, revealing that spin canting can partially suppress and then recover superconducting properties due to internal magnetic field modulation.

Contribution

It provides new insights into the interplay between spin canting and superconductivity in a specific oxide heterostructure, highlighting the sensitivity of superconductivity to internal magnetic states.

Findings

Spin canting partially destroys superconductivity.

Superconductivity recovers when spin canting is suppressed.

Superconducting order is highly sensitive to internal magnetic modulation.

Abstract

The proximity effect of a C-type antiferromagnet (C-AFM) with the spin canting at low temperature is investigated in the hybrid Nd0.35Sr0.65MnO3(NSCO)/YBa2Cu3O7(YBCO) oxide system through magnetic and transport measurements. It is found that the onset of a spin-canted state destroys partially the superconducting order parameter. Interestingly, due to the instability of this spin-canted state, zero-resistivity recovers at the offset of spin canting. Our result demonstrates clearly the high sensitivity of superconducting order parameter to a modulation of internal field.