Complementary Insights from Neutron and Resonant X‐Ray Reflectometry for the Study of Perovskite Transition Metal Oxide Heterostructures

Abstract

The nondestructive investigation of electronic and magnetic modifications at buried interfaces contributes significantly to the understanding of the underlying interactions. This knowledge is essential for the design of electronic devices based on complex quantum materials. Herein, the application of resonant X‐ray and neutron reflectometry for the study of perovskite transition metal oxide heterostructures is reviewed. Both methods are well suited for the nondestructive study of interfacial reconstructions and interactions of spin, charge, and orbitals at the nanoscale. Herein, cases are highlighted in which both methods are complementary and thus provide unique insights into the physics of oxide heterostructures.

Topical Review of Quantum Materials and Heterostructures Studied by Polarized Neutron Reflectometry

“…This difficulty is overcome with either resonant scattering synchrotron measurements, or with the use of neutron scattering techniques, such as PNR. [58,59] Aside from high-T C superconducting interfaces, spin valves, and proximity effects, which were discussed in the previous section, we have identified three main relevant branches of research where PNR has been a key technique in understanding oxide interfaces: interface magnetism, exchange spring and bias, and interlayer exchange coupling (IEC).…”

“…This difficulty is overcome with either resonant scattering synchrotron measurements, or with the use of neutron scattering techniques, such as PNR. [ 58,59 ]…”