Suppression of the superconducting proximity effect in ferromagnetic-superconducting oxide heterostructures with ion-irradiation

被引：5

作者：

Kumar, Yogesh ^{[1
]}

Bhatt, Harsh ^{[1
,2
]}

Prajapat, C. L. ^{[2
,3
]}

Singh, A. P. ^{[4
]}

Singh, Fouran ^{[5
]}

Kinane, C. J. ^{[6
]}

Langridge, S. ^{[6
]}

Basu, S. ^{[1
,2
]}

Singh, Surendra ^{[1
,2
]}

机构：

[1] Bhabha Atom Res Ctr, Div Solid State Phys, Mumbai 400085, Maharashtra, India

[2] Homi Bhabha Natl Inst, Mumbai 400094, Maharashtra, India

[3] Bhabha Atom Res Ctr, Tech Phys Div, Mumbai 400085, Maharashtra, India

[4] Dr BR Ambedkar Natl Inst Technol, Dept Phys, Thin Film Lab, Jalandhar 144011, Punjab, India

[5] Inter Univ, Mat Sci Grp, Accelerator Ctr, Aruna Asaf Ali Marg, New Delhi 110067, India

[6] Rutherford Appleton Lab, ISIS Neutron & Muon Source, Didcot OX11 0QX, Oxon, England

来源：

JOURNAL OF APPLIED PHYSICS | 2021年 / 129卷 / 16期

关键词：

FILMS; SUPERCURRENTS; REFLECTION; TRANSPORT;

D O I：

10.1063/5.0047334

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of ion irradiation on the proximity effect in YBa2Cu3O7-delta/La0.67Sr0.33MnO3 and YBa2Cu3O7-delta/SrTiO3/La0.67Sr0.33MnO3 heterostructures has been investigated using spin-polarized neutron reflectivity experiments. We demonstrate that the magnetization in the ferromagnetic (La0.67Sr0.33MnO3) layer at the interface is correlated with the suppression of the superconductivity in the YBa2Cu3O7-delta layer after irradiation, while the layer structure of the heterostructures remains intact. The evolution of the magnetization of the interfacial ferromagnetic layer studied as a function of temperature for both the irradiated heterostructures shows the absence of the proximity effect observed in the un-irradiated samples. The absence of a proximity effect is attributed to the suppression of the superconductivity, as seen in macroscopic magnetization measurements of the heterostructures after ion irradiation.

引用

页数：8

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