Oxides

Oxides

Material systems with strongly correlated electrons have been found to exhibit a wide range of properties, such as superconductivity, various magnetic phases, and metal to insulator transitions. These properties have been further expanded by the ability to grow these materials in heterostructures where the interfaces often exhibit states not seen in the bulk material, including 2-D electron gases such as those seen at the LAO/STO interface. Currently the group is working on understanding the properties and interfaces of the rare earth nickelate (RNiO3) family of materials, which in the bulk have a metal to insulator transition.

Oxides often make good dielectric materials and the Martinis group at UCSB makes use of sapphire in constructing superconducting resonators for use in quantum computing as qubits. Coherence times of the resonators is heavily influenced by the Al/Sapphire interface, and two level states that may be present, we are studying ways to increase qubit coherence lifetimes by identifying possible defects at the interface and ways to improve the sapphire/Al interface using our in-situ growth and characterization equipment.

Researchers

Photo
Professor, ECE and Materials Departments

Epitaxy of dissimilar materials.

Tobias
Graduate Student Researcher

Study of Perpendicular Magnetic Anisotropy in Fe/MgO system with MOKE, XPS and SQUID

Dan
Graduate Student Researcher

MBE growth and characterization of 2D electronic materials for advanced devices, such as hexagonal boron nitride (hBN)

Graduate Student Researcher

I am currently growing oxide materials in order to understand behavior of strongly correlated electronic materials, and to study the Al/Sapphire interface for applications with quantum computing.