Depth-resolved resonant inelastic x-ray scattering at a superconductor/half-metallic-ferromagnet interface through standing wave excitation

Kuo, Cheng-Tai; Lin, Shih-Chieh; Ghiringhelli, Giacomo; Peng, Yingying; De Luca, Gabriella Maria; Di Castro, Daniele; Betto, Davide; Gehlmann, Mathias; Wijnands, Tom; Huijben, Mark; Meyer-Ilse, Julia; Gullikson, Eric; Kortright, Jeffrey B.; Vailionis, Arturas; Gauquelin, Nicolas; Verbeeck, Johan; Gerber, Timm; Balestrino, Giuseppe; Brookes, Nicholas B.; Braicovich, Lucio; Fadley, Charles S.

doi:10.1103/physrevb.98.235146

Title: Depth-resolved resonant inelastic x-ray scattering at a superconductor/half-metallic-ferromagnet interface through standing wave excitation

Journal Article · 21 December 2018 · Physical Review B

DOI: https://doi.org/10.1103/physrevb.98.235146 · OSTI ID:1563990

Kuo, Cheng-Tai ^[1]; Lin, Shih-Chieh ^[1]; Ghiringhelli, Giacomo ^[2]; Peng, Yingying ^[3]; De Luca, Gabriella Maria ^[4]; Di Castro, Daniele ^[5]; Betto, Davide ^[6]; Gehlmann, Mathias ^[1]; Wijnands, Tom ^[7]; Huijben, Mark ^[7]; Meyer-Ilse, Julia ^[8]; Gullikson, Eric ^[8]; Kortright, Jeffrey B. ^[8]; Vailionis, Arturas ^[9]; Gauquelin, Nicolas ^[10]; Verbeeck, Johan ^[11]; Gerber, Timm ^[12]; Balestrino, Giuseppe ^[5]; Brookes, Nicholas B. ^[6]; Braicovich, Lucio ^[2] more »

Univ. of California, Davis, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
CNR-SPIN and Dipartimento di Fisica Politecnico di Milano, Milano (Italy)
CNR-SPIN and Dipartimento di Fisica Politecnico di Milano, Milano (Italy); Univ. of Illinois, Urbana, IL (United States)
Univ. di Monte Sant'Angelo, via Cinthia, Napoli (Italy)
Univ. di Roma Tor Vergata, Roma (Italy)
European Synchrotron Radiation Facility, Grenoble Cedex (France)
Univ. of Twente, Enschede (The Netherlands)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Stanford Univ., Stanford, CA (United States)
Univ. of Twente, Enschede (The Netherlands); Univ. of Antwerp, Antwerp (Belgium)
Univ. of Antwerp, Antwerp (Belgium)
Univ. of California, Davis, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Peter Grünberg Inst. PGI-6, Julich (Germany)

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 La_1.85Sr_0.15CuO₄ (LSCO) and a half-metallic ferromagnet La_0.67Sr_0.33MnO₃ (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. Here, 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.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231; SC0014697

OSTI ID:: 1563990

Alternate ID(s):: OSTI ID: 1488681

Journal Information:: Physical Review B, Vol. 98, Issue 23; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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