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Tuning electronic reconstructions at the cuprate-manganite interface
DOI:
10.1103/PhysRevMaterials.3.094406
Authors:
C.
Schlueter
(Diamond Light Source; Deutsches Elektronen-Synchrotron DESY)
,
C.
Aruta
(CNR-SPIN, c/o Università di Roma Tor Vergata)
,
N.
Yang
(ShanghaiTech University)
,
A.
Tebano
(National Research Council CNR-SPIN, University of Roma Tor Vergata)
,
D.
Di Castro
(CNR-SPIN, c/o Università di Roma Tor Vergata; Università di Roma Tor Vergata Via del Politecnico)
,
G.
Balestrino
(CNR-SPIN, c/o Università di Roma Tor Vergata; Università di Roma Tor Vergata Via del Politecnico)
,
T.-L.
Lee
(Diamond Light Source)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Physical Review Materials
, VOL 3
State:
Published (Approved)
Published:
September 2019
Abstract: The electronic properties of CaCuO 2 / La 0.7 Sr 0.3 MnO 3 (LSMO) superlattices are determined by the electronic structure of the structural units and in particular their interfaces. The electronic structure of LSMO is governed by a metal-insulator transition, which is controlled by the thickness of the units and the sample temperature, resulting in a systematic downward band shift for metallic samples (i.e., thick LSMO units, low temperature). We present a systematic study of the changes in the valence-band structure and screening features in Mn 2 p and Cu 2 p core-level spectra. The results show that hybridization of Cu 3 d orbitals with out-of-plane O 2 p orbitals can be systematically tuned by controlling the band alignment at the interface via the metal-to-insulator transition of the LSMO units. This opens a new route to rational design of functional interfaces and control of orbital reconstructions.
Subject Areas:
Physics,
Materials
Instruments:
I09-Surface and Interface Structural Analysis
Added On:
23/09/2019 08:51
Discipline Tags:
Surfaces
Physics
Hard condensed matter - structures
Materials Science
interfaces and thin films
Metallurgy
Technical Tags:
Spectroscopy
X-ray Absorption Spectroscopy (XAS)
X-ray Photoelectron Spectroscopy (XPS)
Hard X-ray Photoelectron Spectroscopy (HAXPES)