A Science & Technology Center

Theme 4: Nanomagnetics

Co-PIs: Jeff Bokor, Sayeef Salahuddin (UCB), Sakhrat Khizroev (FIU), Shan Wang (Stanford)

System Integration: Vladimir Stojanovich (UCB),

Graduate Students/Postdocs: Jyotirmoy Chatterjee, (UCB), Amal El-Ghazaly (UCB), Hyejin Jang (UCB), Xiang Li (Stanford), Rawan Naous (UCB), Brayan Navarette(FIU), Yoonhwan Kang (UCB), Akshay Pattabi (UCB), Marc Stone (FIU), Ingrid Torres (FIU)

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Theme Overview

NSF 2016 Site Visit Page 21/14/16

Main Goal: Realize a Magnetic Switch to Meet E3S Device Specs(Theme Leader: Jeff Bokor)

Low operating voltageFast switching speed

Understand circuit/system applications

Electrical interconnect On/off ratio

sense/switch sense/switch

CommunicationCommunication Communication

+V +V

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Ø High-gain spin-orbit torque switch [Salahuddin, Wang]

Current Theme Projects & PI’s

Ø High-speed nonequilibrium magnetic switching [Bokor, Salahuddin]– Non-precessional, sub-10 psec switching time

Ø Ultra-low switching current in sub-10 nm MTJs [Khizroev, Bokor]

Ø Circuit/systems design and integration[Stojanovic, Wang, Bokor, Salahuddin]– Use non-volatility to overcome leakage

9/19/19 E3S Retreat, Berkeley Page 3

Load

Store

CLK CLKb

CLKb CLKQD

Qb

Store

A Science & Technology Center

E3S Retreat, Berkeley Page 49/19/19

A Science & Technology Center

Multilevel 3D Magnetic Tunneling Junctions for In-Memory Computing

E3S Retreat, Berkeley Page 59/19/19

F-MOKE Measurements from Densely Patterned 4-Layer Junction Demonstrate 3-D Information Storage

Khizroev Group

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Spin Orbit Torque Switching

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E3S Retreat, Berkeley9/19/19

Wang, SalahuddinGroups

A Science & Technology Center

Bokor Group Members

Ø Amal El-Ghazaly → Cornell EE Faculty! JØ Hyejin Jang, Postdoc joined from UIUCØ Ingrid Torres, Summer 2019 from FIUØ Jyotirmoy ChatterjeeØ Akshay PattabiØ Brandon Tran, UCB undergrad, now UCB Ph.D.

student

E3S Retreat, Berkeley Page 79/19/19