Magnetic proximity effect in YBCO/STO/LCMO multilayers

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dc.contributor.authorPaull, Oen_AU
dc.contributor.authorCauser, GLen_AU
dc.contributor.authorPan, AVen_AU
dc.contributor.authorKlose, Fen_AU
dc.date.accessioned2022-05-27T06:41:00Zen_AU
dc.date.available2022-05-27T06:41:00Zen_AU
dc.date.issued2017-01-31en_AU
dc.date.statistics2021-09-24en_AU
dc.description.abstractTailoring of the electronic properties of complex oxide heterostructures, thin films, and superlattices with atomically sharp interfaces is at the frontline of materials research at present [1, 2, 3]. Interfaces exhibit novel states that are not possible in bulk materials as a result of broken symmetry, induced strains, and modified exchange interactions. In this work we examined the interaction between a superconducting YBa2Cu3O7-δ thin film layer and a ferromagnetic La2/3Ca1/3MnO3 layer using polarised neutron reflectometry. The interaction at the interface between YBCO/LCMO multilayers has resulted in a variety of observed phenomena such as induced ferromagnetic moments in YBCO layers that are antiparallel to neighbouring LCMO layers, and a strong reduction in magnetization in LCMO near the interface. Prajapat et al. investigated the YBCO/LCMO interface using SrTiO3 (STO) as an intermediate insulating layer, and reported that the magnetic depletion (MD) in LCMO near the interface is dependent on the critical temperature of YBCO and the thickness of the LCMO layer, and claimed that the origin of the MD in LCMO is due to Cooper pairs tunneling through the STO interlayer across the interface [5]. Our work has verified the observation of the MD layer in LCMO near the interface as claimed in the past report, and additionally studied the effect of a magnetic field on this layer. Polarised neutron reflectometry measurements performed at ANSTO on the PLATYPUS reflectometer indicate that the effect of applying fields at 0.03 T and 1 T is to cause a small restoration of magnetization in this depleted layer. This result supports the mechanism proposed by Prajapat et al. of a superconductivity-induced MD from tunneling through STO.en_AU
dc.identifier.citationPaull, O., Causer, G., Pan, A. V., Klose, F. (2017). Magnetic proximity effect in YBCO/STO/LCMO multilayers. Poster presented to the 41st Annual Condensed Matter and Materials Meeting, Charles Sturt University, Wagga Wagga, NSW, Australia, 31st January - 3rd February 2017, (pp. 53). Retrieved from: https://physics.org.au/wp-content/uploads/cmm/2017/Wagga_2017_Conference_Handbook.pdfen_AU
dc.identifier.conferenceenddate3 February 2017en_AU
dc.identifier.conferencenameAustralian and New Zealand Institutes of Physics 41st Annual Condensed Matter and Materials Meetingen_AU
dc.identifier.conferenceplaceWagga Wagga, NSWen_AU
dc.identifier.conferencestartdate31 January 2017en_AU
dc.identifier.otherWP12en_AU
dc.identifier.pagination53en_AU
dc.identifier.urihttps://physics.org.au/wp-content/uploads/cmm/2017/Wagga_2017_Conference_Handbook.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13221en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectOxidesen_AU
dc.subjectThin filmsen_AU
dc.subjectCrystal latticesen_AU
dc.subjectLayersen_AU
dc.subjectMaterialsen_AU
dc.subjectSymmetryen_AU
dc.subjectInteractionsen_AU
dc.subjectCopper pairsen_AU
dc.subjectTunnel effecten_AU
dc.titleMagnetic proximity effect in YBCO/STO/LCMO multilayersen_AU
dc.typeConference Posteren_AU
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