Summary
Magnetoelectric multiferroics are materials that exhibit correlated ferroelectric and ferromagnetic properties (i.e., a magnetoelectric effect). The resulting ability of these materials to simultaneously store data in electric polarization and magnetic moment could increase data storage density and data processing speed while reducing energy consumption. This project aims to design and fabricate new composite multiferroic nanostructures with enhanced interactions between the electric polarization and spin by coupling ferroelectric and ferromagnetic components (preliminary examples of such nanostructures can be seen in the figure). First, ferromagnetic components with variable compositions and ferroelectric components with different nanostructure sizes and morphologies will be synthesized and characterized. The optimized ferroelectric and ferromagnetic components will be coupled to form the composite multiferroics, which will be probed at ensemble and single nanostructure levels to investigate the magneto-electrical properties. Additional tests will be run to optimize the fabrication method and to propose improved materials, configurations, and compositions for multiferroics systems that demonstrate enhanced magnetoelectric coupling in quantum communication applications. The results of this work can inform future designs of multifunctional nanomaterials for improved information processing and memory storage technologies.
(a) Magnetic hysteresis loops of multiferroic nanocomposite at 5 K and 300 K. Inset: Transmission electron microscopy (TEM) image of ferromagnetic cobalt ferrite nanocubes used to prepare the composite. (b) TEM image of composite core-shell multiferroic nanowire and the corresponding elemental line scan. (c) High resolution TEM image of an interface between ferroelectric and ferromagnetic components.(What is CFO and PTO?)
Related Content
Quantum Computational Resources in the Presence of Symmetry
Summary Fault-tolerance is essential to the performance of quantum technologies, but known schemes are extremely resource intensive. Thus, improving existing schemes or inventing new schemes is of central importance. This joint project is based on the realization that fault-tolerance schemes make use of symmetries in fundamental ways, and that studying the problem of fault tolerance […]
March 13, 2019
Cryo-CMOS to Control and Operate 2D Fault-Tolerant Qubit Network
Summary Large-scale, fault-tolerant quantum computation requires precise and stable control of individual qubits. This project will use complementary metal-oxide-semiconductor (CMOS) technology to provide a cost-effective scalable platform for reliable and high-density control infrastructure for silicon spin qubits. We will use sub-micron CMOS technology to address device and circuit-level challenges and explore the integration of […]
June 14, 2018
Two-Dimensional Quantum Materials and Heterostructures
Two-dimensional (2D) layers just one atom thick can be stripped from certain materials, such as graphene.
June 1, 2017
Reliably operating noisy quantum computers
Summary The overall goal of the project is to develop practical methods to be able to reliably run useful applications on near-term quantum computers. This requires identifying and overcoming the ubiquitous errors that currently limit quantum computing capabilities. Traditional methods of quantifying errors in quantum computers fail to predict how errors affect the output of […]
January 22, 2020