Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N40: 2D Moiré Materials: Electronic and Correlated Phenomena
11:30 AM–2:30 PM,
Wednesday, March 8, 2023
Room: Room 232
Sponsoring
Unit:
DMP
Chair: Ying Wang, University of Wisconsin - Madison; You Zhou, University of Maryland College Park
Abstract: N40.00007 : Twist angle engineering of proximity exchange in graphene/Cr2Ge2Te6 bilayers*
1:06 PM–1:18 PM
Presenter:
Jaroslav Fabian
(University of Regensburg)
Authors:
Jaroslav Fabian
(University of Regensburg)
Klaus Zollner
(University of Regensburg)
Van der Waals heterostructures composed of twisted monolayers promise great tunability of electronic, optical, and magnetic properties. In this talk we present the twist-angle and gate dependence of the proximity exchange coupling in graphene/Cr$_2$Ge$_2$Te$_6$ bilayers from first principles. The proximitized Dirac band dispersions of graphene show a continuous tunability of the ferromagnetic exchange from positive 4 to negative -4 meV, when twisting from 0 to 30 degrees. Remarkably, at around 19 degrees the induced exchange coupling can become antiferromagnetic. Further tuning is provided by a transverse electric field and the interlayer distance.
*This work was supported by DFG SFB 1277, DFG SPP 2244, and the EU Horizon 2020 Research and Innovation Program (Graphene Flagship, Core 3).
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700