Feb 5 2021

Antiferromagnetic Spintronics Using Magnetoelectric Chromium Oxide

ECE 595 Department Seminar Series

February 5, 2021

11:00 AM - 12:00 PM


online: https://uic.zoom.us/j/87342501577#success


Chicago, IL 60706

Antiferromagnetic Spintronics Using Magnetoelectric Chromium Oxide

Presenter: Shaloo Rakheja, University of Illinois Urbana Champaign

Abstract: Antiferromagnetic materials have ordered spin moments that alternate between individual atomic sites, which gives them a vanishing macroscopic magnetic signature and picosecond intrinsic timescale. These properties combined with emerging spintronic phenomena make antiferromagnets suitable for future technologies such as high-density, secure nonvolatile memory, compact narrowband terahertz sources, and spike generators.

Chromium oxide is an archetypal room-temperature antiferromagnetic insulator. Its domain state can be controlled by electric field in the presence of a small magnetic field from the linear magnetoelectric effect, and can be detected by measuring the anomalous Hall signal produced by stray moments on the surface. A steady-state spin precession can be excited from an in-plane electric current in a bilayer geometry consisting of a metal with strong spin-orbit coupling and chromium oxide, and can be detected from spin pumping. In this talk, I will present the physics of spin dynamics in chromium oxide, discuss its prospects to act as a memory and an oscillator, and highlight the present challenges in the field of antiferromagnetic spintronics.

Speaker bio: Shaloo Rakheja joined the electrical and computer engineering (ECE) department at the University of Illinois at Urbana-Champaign in 2019 an assistant professor. From 2015-2019, Shaloo was an assistant professor of ECE at New York University. Prior to joining NYU, she was a postdoctoral associate at the Microsystems Technology Laboratories at Massachusetts Institute of Technology. Shaloo received her MS and PhD in electrical and computer engineering from the Georgia Institute of Technology in 2009 and 2012, respectively.  Shaloo’s research interests are in understanding, predicting, and modeling physical phenomena in materials that drive their functional behavior and enable applications such as low-power logic and memory, sensing, and wireless communication.

Faculty host: Amit Trivedi, amitrt@uic.edu

This event will not be recorded


Department of Electrical and Computer Engineering

Date posted

Feb 4, 2021

Date updated

Feb 4, 2021