Shehrin Sayed

Postdoctoral Researcher
EECS, University of California-Berkeley
MSD, Lawrence Berkeley National Laboratory
Berkeley, CA 94720.

Senior Member, IEEE

Email: ssayed AT berkeley.edu, ssayed AT lbl.gov

About me

Thank you for your interest. I am a postdoctoral researcher with the Department of Electrical Engineering and Computer Sciences, University of California- Berkeley, and with Materials Science Division, Lawrence Berkeley National Laboratory.

My research focuses on the fundamental science behind technological limitations and identifies new materials and devices compatible with standard electronics to achieve improvements at the systems level. My approach is to develop theoretical frameworks (see Figure below) that bridge diverse materials to device structures and analyze their performance within standard CMOS circuits. This approach allows me to predict novel phenomena and establish their relevance for practical applications. A number of my predictions have been demonstrated experimentally. My research has been recognized with the 2018 Dimitris N. Chorafas award, characterized by its potential for practical application and significance attached to its aftermath. My research interests include integrated nanomagnetics and quantum electronics.


Education

Ph.D. (May 2018) in Electrical and Computer Engineering, Purdue University. (Download Dissertation).

M.Sc. (Dec 2013) in Electrical and Computer Engineering, Purdue University. (Download Thesis).

B.Sc. (Feb 2011) in Electrical and Electronics Engineering, Bangladesh University of Engineering and Technology.

My research highlights

Nonvolatile Memory

SOT Rectifier

Quantum Materials

Transport Models

Machine Learning in Materials Search

Selected Publications (Theory -> New Phenomena -> Devices)

  1. S. Sayed, S. Salahuddin, and E. Yablonovitch, "Spin–orbit torque rectifier for weak RF energy harvesting '', Appl. Phys. Lett. 118, 052408, February 2021. (Link).

  2. S. Sayed, C.-H. Hsu, N. Roschewsky, S.-H. Yang, and S. Salahuddin, "Resonant enhancement of exchange coupling for voltage-controlled magnetic switching", Phys. Rev. Applied 14, 034070, September 2020. (Link).

  3. S. Sayed, S. Hong, X. Huang, A. S. Everhardt, L. Caretta, R. Ramesh, S. Salahuddin, and S. Datta, "Unified Framework for Charge-Spin Interconversion in Spin-Orbit Materials", Phys. Rev. Applied, 15, 054004, May 2021. (Link).

  4. S. Sayed, S. Hong, and S. Datta, “Multi-Terminal Spin Valve on Channels with Spin-Momentum Locking”, Scientific Reports 6, 35658, October 2016. (Link).

  5. S. Sayed, S. Hong, E. E. Marinero, and S. Datta, "Proposal of a Single Nano-Magnet Memory Device", IEEE Electron Device Letters 38, 1665-1668, December 2017. (Link).

  6. X. Huang, S. Sayed, J. Mittelstaedt, S. Susarla, S. Karimeddiny, L. Caretta, H. Zhang, V. A. Stoica, T. Gosavi, F. Mahfouzi, Q. Sun, P. Ercius, N. Kioussis, S. Salahuddin, D. C. Ralph, R. Ramesh, "Novel spin-orbit torque generation at room temperature in an all-oxide epitaxial La0.7Sr0.3MnO3/SrIrO3 system", Advanced Materials, 2008269, May 2021. (Link).

News

  • Aug 10, 2021. Our manuscript on a novel voltage-controlled gain cell magnetic memory has been accepted for publication in IEEE Electron Device Letters (Link).

  • July 2, 2021. I have been elevated to the IEEE Senior Member grade.

  • May 7, 2021. We have demonstrated a novel spin-orbit torque (SOT) in a correlated oxide system and shown that epitaxially grown oxide interfaces can play an important role in determining the SOT efficiency and interfacial magnetism. Our findings are published in Advanced Materials. (Link)

  • May 4, 2021. We have developed a unified theoretical framework for charge-spin interconversion that brings together diverse spin-orbit materials under one umbrella and provided several new scaling laws for future materials and device design. Our paper has been published in Phys. Rev. Applied. (Link).

  • Feb 2, 2021. Our proposal of a spin-orbit torque rectifier is published in Applied Physics Letters. The device is promising for harvesting weak RF power < 1μW, with high efficiency ~70%, where conventional technologies do not operate. (Link).

  • Sep 30, 2020. Our proposal of a new voltage-controlled magnetic memory, promising for very low energy-delay product, is now published in Phys. Rev. Applied. For details, click here.

  • Aug 17, 2020. I am now jointly affiliated with Materials Science Division, Lawrence Berkeley National Laboratory.

  • Aug 5, 2020. My collaborators have demonstrated electrical detection of inverse Rashba Edelstein effect on a topological Kondo insulator. For details, click here.

  • Jul 19, 2020. Our eBook on nanomagnetics from E3S center is now available online.

  • May 23, 2019. My proposal of an all-metallic rectifier with Ohmic contacts, exhibiting low threshold has been published in Phys. Rev. Applied. For details, click here.

  • Aug 22, 2018. My Ph.D dissertation received 2018 Dimitris N. Chorafas award for spintronics research. For details, click here.

  • Aug 16, 2018. Received the best poster award from in 2018 annual review of ASCENT, a JUMP center sponsored by SRC & DARPA. For details, click here.

  • Feb 21, 2018. My theoretical prediction of a long-range three state magnetoresistance has been demonstrated experimentally. For details, click here.