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Controlling the strength of ferromagnetic order in YBa2Cu3O7/La2/3Ca1/3MnO3 multilayers

Andrés Prada, Roberto de ; Gaina, Roxana ; Biškup, N. ; Varela, M. ; Stahn, J. ; Bernhard, Christian

In: Physical Review B, 2019, vol. 100, no. 11, p. 115129

With dc magnetization and polarized neutron reflectometry we studied the ferromagnetic response of YBa2Cu3O7/La2/3Ca1/3MnO3 (YBCO/LCMO) multilayers that are grown with pulsed laser deposition. We found that whereas for certain growth conditions (denoted as A type) the ferromagnetic moment of the LCMO layer is strongly dependent on the structural details of the YBCO layer on which it is ...

Element-specific magnetization redistribution at ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7}/{\mathrm{La}}_{2/3}{\mathrm{Ca}}_{1/3}{\mathrm{MnO}}_{3}$ interfaces

Alberca, Aurora ; Uribe-Laverde, Miguel Angel ; Windsor, Y. W. ; Ramakrishnan, M. ; Rettig, L. ; Marozau, Ivan ; Tonnerre, J-M. ; Stahn, J. ; Staub, U. ; Bernhard, Christian

In: Physical Review B, 2015, vol. 92, no. 17, p. 174415

We study the element-specific magnetic depth profiles of a YBa2Cu3O7/La2/3Ca1/3MnO3 (YBCO/LCMO) superlattice using soft x-ray resonant magnetic reflectometry (XRMR). This allows us to study the magnetic proximity effect (MPE) that is observed at the YBCO/LCMO interface, characterized by the occurrence of a depleted layer on the manganite side and an induced magnetization in the YBCO. Using the...

Strain-induced ferromagnetism in antiferromagnetic LuMnO₃ thin films

White, J. S. ; Bator, M. ; Hu, Yanqing ; Luetkens, H. ; Stahn, J. ; Capelli, S. ; Das, Saikat ; Döbeli, M. ; Lippert, Th. ; Malik, Vivek Kumar ; Martynczuk, J. ; Wokaun, A. ; Kenzelmann, M. ; Niedermayer, Ch. ; Schneider, C. W.

In: Physical Review Letters, 2013, vol. 111, no. 3, p. 037201

Single phase and strained LuMnO₃ thin films are discovered to display coexisting ferromagnetic and antiferromagnetic orders. A large moment ferromagnetism (≈1μB), which is absent in bulk samples, is shown to display a magnetic moment distribution that is peaked at the highly strained substrate-film interface. We further show that the strain-induced ferromagnetism and the...

Depth profile of the ferromagnetic order in a YBa₂Cu₃O₇/La2/3Ca1/3MnO₃ superlattice on a LSAT substrate: A polarized neutron reflectometry study

Uribe-Laverde, Miguel Angel ; Satapathy, Dillip Kumar ; Marozau, Ivan ; Malik, Vivek Kumar ; Das, Saikat ; Sen, Kaushik ; Stahn, J. ; Rühm, A. ; Kim, Joo Young ; Keller, T. ; Devishvili, A. ; Toperverg, B. P. ; Bernhard, Christian

In: Physical Review B - Condensed Matter and Materials Physics, 2013, vol. 87, no. 11, p. 115105

Using polarized neutron reflectometry (PNR) we have investigated a [YBa₂Cu₃O₇(10 nm)/La2/3Ca1/3MnO₃(9 nm)]₁₀ (YBCO/LCMO) superlattice grown by pulsed laser deposition on a La0.3Sr0.7Al0.65Ta0.35O₃ (LSAT) substrate. Due to the high structural quality of the superlattice and the substrate, the specular reflectivity...

Competing interactions at the interface between ferromagnetic oxides revealed by spin-polarized neutron reflectometry

Kim, J.-H. ; Vrejoiu, I. ; Khaydukov, Y. ; Keller, T. ; Stahn, J. ; Rühm, A. ; Satapathy, Dillip Kumar ; Hinkov, V. ; Keimer, B.

In: Physical Review B - Condensed Matter and Materials Physics, 2012, vol. 86, no. 18, p. 180402

We have investigated the magnetization profiles in superlattices composed of the two ferromagnets La0.7Sr0.3MnO₃ and SrRuO₃ using spin-polarized neutron reflectometry. In combination with magnetometry, the neutron data indicate a noncollinear spin configuration where orientation of the Ru moments changes from in plane at the interface to out of plane deep inside the...

Magnetic Proximity Effect in YBa₂Cu₃O₇/La2/3Ca1/3MnO₃ and YBa₂Cu₃O₇/LaMnO₃₊ Superlattices

Satapathy, Dillip Kumar ; Uribe-Laverde, M. A. ; Marozau, I. ; Malik, Vivek K. ; Das, S. ; Wagner, Th. ; Marcelot, C. ; Stahn, J. ; Brück, S. ; Rühm, A. ; Macke, S. ; Tietze, T. ; Goering, E. ; Frañó, A. ; Kim, J. -H. ; Wu, M. ; Benckiser, E. ; Keimer, B. ; Devishvili, A. ; Toperverg, B. P. ; Merz, M. ; Nagel, P. ; Schuppler, S. ; Bernhard, Christian

In: Physical Review Letters, 2012, vol. 108, no. 19, p. 197201

Using neutron reflectometry and resonant x-ray techniques we studied the magnetic proximity effect (MPE) in superlattices composed of superconducting YBa₂Cu₃O₇ and ferromagnetic-metallic La0.67Ca0.33MnO₃ or ferromagnetic-insulating LaMnO₃₊. We find that the MPE strongly depends on the electronic state of the manganite layers, being pronounced for the...

Pulsed laser deposition growth of heteroepitaxial YBa2Cu3O7/La0.67Ca0.33MnO3 superlattices on NdGaO3 and Sr0.7La0.3Al0.65Ta0.35O3 substrates

Malik, Vivek Kumar ; Marozau, I. ; Das, S. ; Doggett, B. ; Satapathy, Dillip Kumar ; Uribe-Laverde, M. A. ; Biskup, N. ; Varela, M. ; Schneider, C. W. ; Marcelot, C. ; Stahn, J. ; Bernhard, Christian

In: Physical Review B - Condensed matter and materials physics, 2012, vol. 85, no. 5, p. 054514

Heteroepitaxial superlattices of [YBa₂Cu₃O₇(n)/La0.67Ca0.33MnO₃(m)]x (YBCO/LCMO), where n and m are the number of YBCO and LCMO monolayers and x the number of bilayer repetitions, have been grown with pulsed laser deposition on NdGaO₃ (110) and Sr0.7La0.3Al0.65Ta0.35O₃ (001). These substrates are well lattice...

Giant superconductivity-induced modulation of the ferromagnetic magnetization in a cuprate–manganite superlattice

Hoppler, Julian ; Stahn, J. ; Niedermayer, Ch. ; Malik, Vivek Kumar ; Bouyanfif, Houssny ; Drew, Alan J. ; Rössle, Matthias ; Buzdin, A. ; Cristiani, G. ; Habermeier, H.-U. ; Keimer, B. ; Bernhard, Christian

In: Nature Materials, 2009, vol. 8, p. 315-319

X-ray study of structural domains in the near-surface region of SrTiO₃ substrates with Y0.6Pr0.4Ba₂Cu₃O₇/La2/3Ca1/3MnO₃ superlattices grown on top

Hoppler, Justin ; Stahn, J. ; Bouyanfif, Houssny ; Malik, Vivek Kumar ; Patterson, B. D. ; Willmott, P. R. ; Cristiani, G. ; Habermeier, H.-U. ; Bernhard, Christian

In: Physical Review B, 2008, vol. 78, no. 13, p. 134111

We investigated with synchrotron x-ray diffraction and reflectometry the formation of structural domains in the near-surface region of single crystalline SrTiO₃ (001) substrates with Y0.6Pr0.4Ba₂Cu₃O₇/La2/3Ca1/3MnO₃ superlattices grown on top. We find that the antiferrodistortive cubic to tetragonal transition, which occurs at...