TY - JOUR
T1 - Depth-resolved resonant inelastic x-ray scattering at a superconductor/half-metallic-ferromagnet interface through standing wave excitation
AU - Kuo, Cheng Tai
AU - Lin, Shih Chieh
AU - Ghiringhelli, Giacomo
AU - Peng, Yingying
AU - De Luca, Gabriella Maria
AU - Di Castro, Daniele
AU - Betto, Davide
AU - Gehlmann, Mathias
AU - Wijnands, Tom
AU - Huijben, Mark
AU - Meyer-Ilse, Julia
AU - Gullikson, Eric
AU - Kortright, Jeffrey B.
AU - Vailionis, Arturas
AU - Gauquelin, Nicolas
AU - Verbeeck, Johan
AU - Gerber, Timm
AU - Balestrino, Giuseppe
AU - Brookes, Nicholas B.
AU - Braicovich, Lucio
AU - Fadley, Charles S.
N1 - Funding Information:
This work was supported by the US Department of Energy under Contract No. DE-AC02- 05CH11231 (Advanced Light Source), and by US DOE Contract No. DE-SC0014697 through the University of California Davis (C.-T.K., S.C.L., and C.S.F.). C.S.F. has also been supported by the Director, Office of Science, Office of Basic Energy Sciences (BSE), Materials Sciences and Engineering (MSE) Division, of the US Department of Energy under Contract No. DE-AC02-05CH11231, through the Laboratory Directed Research and Development Program of Lawrence Berkeley National Laboratory, through a US DOE BES MSE grant at the University of California Davis from the X-Ray Scattering Program under Contract No. DE-SC0014697, through the APTCOM Project, “Laboratoire d’Excellence Physics Atom Light Matter” (LabEx PALM) overseen by the French National Research Agency (ANR) as part of the “Investissements d’Avenir” program, and from the Jűlich Research Center, Peter Grűnberg Institute, PGI-6. J.V. and N.G. acknowledge funding through the GOA project “Solarpaint” of the University of Antwerp. The microscope used in this work was partly funded by the Hercules Fund from the Flemish Government. The RIXS experiment was made at the beam line ID32 of the ESRF using the ERIXS spectrometer. G.G. and Y.Y.P. were supported by the ERC-P-ReXS Project No. 2016-0790 of the Fondazione CARIPLO and Regione Lombardia, Italy.
Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/12/21
Y1 - 2018/12/21
N2 - We demonstrate that combining standing wave (SW) excitation with resonant inelastic x-ray scattering (RIXS) can lead to depth resolution and interface sensitivity for studying orbital and magnetic excitations in correlated oxide heterostructures. SW-RIXS has been applied to multilayer heterostructures consisting of a superconductor La1.85Sr0.15CuO4 (LSCO) and a half-metallic ferromagnet La0.67Sr0.33MnO3 (LSMO). Easily observable SW effects on the RIXS excitations were found in these LSCO/LSMO multilayers. In addition, we observe different depth distribution of the RIXS excitations. The magnetic excitations are found to arise from the LSCO/LSMO interfaces, and there is also a suggestion that one of the dd excitations comes from the interfaces. SW-RIXS measurements of correlated-oxide and other multilayer heterostructures should provide unique layer-resolved insights concerning their orbital and magnetic excitations, as well as a challenge for RIXS theory to specifically deal with interface effects.
AB - We demonstrate that combining standing wave (SW) excitation with resonant inelastic x-ray scattering (RIXS) can lead to depth resolution and interface sensitivity for studying orbital and magnetic excitations in correlated oxide heterostructures. SW-RIXS has been applied to multilayer heterostructures consisting of a superconductor La1.85Sr0.15CuO4 (LSCO) and a half-metallic ferromagnet La0.67Sr0.33MnO3 (LSMO). Easily observable SW effects on the RIXS excitations were found in these LSCO/LSMO multilayers. In addition, we observe different depth distribution of the RIXS excitations. The magnetic excitations are found to arise from the LSCO/LSMO interfaces, and there is also a suggestion that one of the dd excitations comes from the interfaces. SW-RIXS measurements of correlated-oxide and other multilayer heterostructures should provide unique layer-resolved insights concerning their orbital and magnetic excitations, as well as a challenge for RIXS theory to specifically deal with interface effects.
UR - http://www.scopus.com/inward/record.url?scp=85058953374&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.98.235146
DO - 10.1103/PhysRevB.98.235146
M3 - Article
AN - SCOPUS:85058953374
SN - 2469-9950
VL - 98
JO - Physical review B: Covering condensed matter and materials physics
JF - Physical review B: Covering condensed matter and materials physics
IS - 23
M1 - 235146
ER -