Emergent Phenomena at Mott Interfaces – a Time- and Depth-Resolved Approach (Final Technical Report)

Technical Report · Fri Jun 28 04:00:00 EDT 2024

DOI:https://doi.org/10.2172/2335705· OSTI ID:2335705

Gray, Alexander ^[1]

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1. Temple Univ., Philadelphia, PA (United States); Temple University – of the Commonwealth System of Higher Education

This is the final technical report for Award DE-SC0019297, Emergent Phenomena at Mott Interfaces – a Time- and Depth-Resolved Approach. This research program aimed to address the scientific questions related to the emergence and control of non-equilibrium electronic phases of matter in strongly correlated Mott oxides and their interfaces. We were focusing specifically on exploiting the interfaces in heterostructures and superlattices, containing Mott oxides CaMnO₃ and LaNiO₃ because in such systems, precise control of electronic and magnetic structure in the ground state can be achieved through dimensionality, heterostructuring, interface termination, and lattice strain. We utilized advanced x-ray spectroscopic and scattering techniques, to investigate these phenomena. Additionally, we used intense THz electric-field pulses generated by a femtosecond laser to directly modify the electronic structure and magnetic states of the ultrathin LaNiO₃ and CaMnO₃ layers in such heterostructures, with the objectives of disentangling, understanding, and harnessing control over the intricate competing interactions responsible for two-dimensional magnetism and metal-insulator transition at the interfaces.

• Research Organization: Temple Univ., Philadelphia, PA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
• DOE Contract Number: SC0019297
• OSTI ID: 2335705
• Report Number(s): DOE-TEMPLE--19297
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
X-Ray Scattering