Quantum Spintronics in Spin-Magnon Hybrids
ECE 595 SEMINAR SERIES
April 16, 2021
11:00 AM - 12:00 PM
Chicago, IL 60607
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Abstract: The coupling between magnons and optically-active quantum spin defects (QSD), such as NV centers, has recently emerged as a promising resource for quantum spintronics and developing versatile probes for magnetism. In this talk, you will hear about possible new opportunities offered by such spin-magnon hybrids for developing: (i) scalable local control of defect qubits, and (ii) quantum probes for electric fields and chiral condensed matter phenomena. Particularly, leveraging magnetoelectric coupling in composite multiferroics, you will learn about electric-field tuning of the interaction between magnons and electron spins of nitrogen-vacancy centers (NV) in diamond. How this provides a new scheme for sensing DC electric fields and multiferroic order will be discussed. Finally, taking spin-magnon hybrids as an example, how spin>1/2 defects, like NV center, can act as sensors of chiral phenomena in condensed matter systems will be highlighted.
Speaker bio: Pramey Upadhyaya is an assistant professor of electrical and computer engineering at Purdue University. Before joining Purdue, Pramey was a postdoctoral scholar in the physics and astronomy department, University of California Los Angeles. He earned his bachelor’s degree in electrical engineering from the Indian Institute of Technology Kharagpur, India, in 2009, and his master’s and PhD degrees in electrical engineering from the University of California Los Angeles, in 2011 and 2015, respectively. His research has explored the theory of classical and quantum spintronic phenomenon and their device applications, enabled by electrical and thermal control of magnetism. Along with his teammates, this work has resulted in one of the earliest demonstrations of current-induced room-temperature skyrmion manipulations, spin torque switching by topological surface states and NV-center probing of spin-caloritronics. He is a recipient of the NSF CAREER award (2020) and the Qualcomm Innovation fellowship (2013).
Faculty Host: Amit Ranjan Trivedi, firstname.lastname@example.org
This seminar will not be recorded.
Apr 30, 2021
Apr 30, 2021