Growth and characterization of La 0.67 Sr 0.33 MnO 3 /YBa 2 Cu 3 O 7-δ bilayers

Wisser, Jacob J.; Suzuki, Yuri

doi:10.1063/9.0000105

Growth and characterization of La _0.67 Sr _0.33 MnO ₃ /YBa ₂ Cu ₃ O _7-δ bilayers

Journal Article · Thu Dec 31 23:00:00 EST 2020 · AIP Advances

DOI:https://doi.org/10.1063/9.0000105· OSTI ID:1851085

^[1]; Suzuki, Yuri ^[2]

Stanford Univ., CA (United States); Stanford Univ., CA (United States)
Stanford Univ., CA (United States)

Understanding the interplay of ferromagnets and superconductors requires high quality interfaces. To this end, we have fabricated heterostructures of the cuprate superconductor YBa2Cu3O7-δ (YBCO) with the metallic ferromagnet La0.67Sr0.33MnO3 (LSMO) via pulsed laser deposition on SrTiO3 (STO) (001) and (LaAlO3)0.3(Sr2TaAlO6)0.7 (LSAT) (001) substrates. By varying the YBCO thickness from 1.7-13.6 nm while keeping the LSMO thickness at 12 nm, we have studied the interplay between ferromagnetism and superconductivity in the in-plane transport and magnetic properties of the bilayers. X-ray reflectivity data indicate the presence of a 2-3 nm thick interfacial layer between the LSMO and YBCO layers in all heterostructures. In-plane transport measurements exhibit suppression of the superconducting transition temperature from bulk YBCO values. Magnetometry measurements indicate high LSMO saturation magnetization values for samples grown on STO substrates and even higher (bulk-like) magnetization for bilayers grown on LSAT substrates. Together these results indicate that the interdiffused layer is largely attributed to a modified YBCO layer.

View Accepted Manuscript (DOE)

Research Organization:: Stanford Univ., CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0008505

OSTI ID:: 1851085

Alternate ID(s):: OSTI ID: 1755788

Journal Information:: AIP Advances, Journal Name: AIP Advances Journal Issue: 1 Vol. 11; ISSN 2158-3226

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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