Structural, magnetic, and superconducting properties of pulsed-laser-deposition-grown / superlattices on (001)-oriented substrates
Abstract
Epitaxial / (LSCO/LCMO) superlattices (SL) on (001)- oriented LaSrAlO4 substrates have been grown with pulsed laser deposition (PLD) technique. Their structural, magnetic and superconducting properties have been determined with in-situ reflection high energy electron diffraction (RHEED), x-ray diffraction, specular neutron reflectometry, scanning transmission electron microscopy (STEM), electric transport, and magnetization measurements. We find that despite the large mismatch between the in-plane lattice parameters of LSCO (a = 0.3779 nm) and LCMO (a = 0.387 nm) these superlattices can be grown epitaxially and with a high crystalline quality. While the first LSCO layer remains clamped to the LSAO substrate, a sizeable strain relaxation occurs already in the first LCMO layer. The following LSCO and LCMO layers adopt a nearly balanced state in which the tensile and compressive strain effects yield alternating in-plane lattice parameters with an almost constant average value. No major defects are observed in the LSCO layers, while a significant number of vertical antiphase boundaries are found in the LCMO layers. The LSCO layers remain superconducting with a relatively high superconducting onset temperature of Tconset ≈ 36 K. The macroscopic superconducting response is also evident in the magnetization data due to a weak diamagnetic signal below 10 K for H ∥ ab and a sizeable paramagnetic shift for H ∥ c that can be explained in terms of a vortex-pinning-induced flux compression. The LCMO layers maintain a strongly ferromagnetic state with a Curie temperature of TCurie ≈ 190 K and a large low-temperature saturation moment of about 3.5 (1) μB. These results suggest that the LSCO/LCMO superlattices can be used to study the interaction between the antagonistic ferromagnetic and superconducting orders and, in combination with previous studies on YBCO/LCMO superlattices, may allow one to identify the relevant mechanisms.
- Authors:
-
- Univ. of Fribourg, Fribourg (Switzerland). Department of Physics and Fribourg Center for Nanomaterials
- Univ. Complutense de Madrid (Spain). Departamento Fisica Aplicada III and Instituto Pluridisciplinar
- Univ. Complutense de Madrid (Spain). Departamento Fisica Aplicada III and Instituto Pluridisciplinar; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
- Max planck Institute for Solid State Research, Stuttgart (Germany); Max Planck Society, Garching (Germany). Neutron source Heinz Maier-Leibnitz (FRM-II)
- ETH Zurich, Zurich (Switzerland). Laboratory of Ion Beam Physics
- Paul Scherrer Inst. (PSI), Villigen (Switzerland)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1162071
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 89; Journal Issue: 9; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Das, S., Sen, K., Marozau, I., Uribe-Laverde, M. A., Biskup, N., Varela, M., Khaydukov, Y., Soltwedel, O., Keller, T., Döbeli, M., Schneider, C. W., and Bernhard, C. Structural, magnetic, and superconducting properties of pulsed-laser-deposition-grown La1.85 Sr0.15 CuO4 / La2/3 Ca1/3 MnO3 superlattices on (001)-oriented LaSrAlO4 substrates. United States: N. p., 2014.
Web. doi:10.1103/PhysRevB.89.094511.
Das, S., Sen, K., Marozau, I., Uribe-Laverde, M. A., Biskup, N., Varela, M., Khaydukov, Y., Soltwedel, O., Keller, T., Döbeli, M., Schneider, C. W., & Bernhard, C. Structural, magnetic, and superconducting properties of pulsed-laser-deposition-grown La1.85 Sr0.15 CuO4 / La2/3 Ca1/3 MnO3 superlattices on (001)-oriented LaSrAlO4 substrates. United States. https://doi.org/10.1103/PhysRevB.89.094511
Das, S., Sen, K., Marozau, I., Uribe-Laverde, M. A., Biskup, N., Varela, M., Khaydukov, Y., Soltwedel, O., Keller, T., Döbeli, M., Schneider, C. W., and Bernhard, C. Wed .
"Structural, magnetic, and superconducting properties of pulsed-laser-deposition-grown La1.85 Sr0.15 CuO4 / La2/3 Ca1/3 MnO3 superlattices on (001)-oriented LaSrAlO4 substrates". United States. https://doi.org/10.1103/PhysRevB.89.094511. https://www.osti.gov/servlets/purl/1162071.
@article{osti_1162071,
title = {Structural, magnetic, and superconducting properties of pulsed-laser-deposition-grown La1.85 Sr0.15 CuO4 / La2/3 Ca1/3 MnO3 superlattices on (001)-oriented LaSrAlO4 substrates},
author = {Das, S. and Sen, K. and Marozau, I. and Uribe-Laverde, M. A. and Biskup, N. and Varela, M. and Khaydukov, Y. and Soltwedel, O. and Keller, T. and Döbeli, M. and Schneider, C. W. and Bernhard, C.},
abstractNote = {Epitaxial La1.85 Sr0.15 CuO4 / La2/3 Ca1/3 MnO3 (LSCO/LCMO) superlattices (SL) on (001)- oriented LaSrAlO4 substrates have been grown with pulsed laser deposition (PLD) technique. Their structural, magnetic and superconducting properties have been determined with in-situ reflection high energy electron diffraction (RHEED), x-ray diffraction, specular neutron reflectometry, scanning transmission electron microscopy (STEM), electric transport, and magnetization measurements. We find that despite the large mismatch between the in-plane lattice parameters of LSCO (a = 0.3779 nm) and LCMO (a = 0.387 nm) these superlattices can be grown epitaxially and with a high crystalline quality. While the first LSCO layer remains clamped to the LSAO substrate, a sizeable strain relaxation occurs already in the first LCMO layer. The following LSCO and LCMO layers adopt a nearly balanced state in which the tensile and compressive strain effects yield alternating in-plane lattice parameters with an almost constant average value. No major defects are observed in the LSCO layers, while a significant number of vertical antiphase boundaries are found in the LCMO layers. The LSCO layers remain superconducting with a relatively high superconducting onset temperature of Tconset ≈ 36 K. The macroscopic superconducting response is also evident in the magnetization data due to a weak diamagnetic signal below 10 K for H ∥ ab and a sizeable paramagnetic shift for H ∥ c that can be explained in terms of a vortex-pinning-induced flux compression. The LCMO layers maintain a strongly ferromagnetic state with a Curie temperature of TCurie ≈ 190 K and a large low-temperature saturation moment of about 3.5 (1) μB. These results suggest that the LSCO/LCMO superlattices can be used to study the interaction between the antagonistic ferromagnetic and superconducting orders and, in combination with previous studies on YBCO/LCMO superlattices, may allow one to identify the relevant mechanisms.},
doi = {10.1103/PhysRevB.89.094511},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 9,
volume = 89,
place = {United States},
year = {Wed Mar 12 00:00:00 EDT 2014},
month = {Wed Mar 12 00:00:00 EDT 2014}
}
Web of Science
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