Antiferromagnetic Spintronics Using Magnetoelectric Chromium Oxide
ECE 595 Department Seminar Series
February 5, 2021
11:00 AM - 12:00 PM
Location
online: https://uic.zoom.us/j/87342501577#success
Address
Chicago, IL 60706
Calendar
Download iCal FileAntiferromagnetic 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
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Date posted
Feb 4, 2021
Date updated
Feb 4, 2021