Bulletin of the American Physical Society
Mid-Atlantic Section 2022 Meeting
Volume 67, Number 20
Friday–Sunday, December 2–4, 2022; University Park, PA, Pennsylvania State University
Session C02: Quantum Materials and Nanostructures I
9:00 AM–11:10 AM,
Saturday, December 3, 2022
Pennsylvania State University
Room: Osmond 104
Chair: Wilson Yanez, Pennsylvania State University
Abstract: C02.00004 : Charge to spin conversion in the Weyl semimetal NbAs*
10:22 AM–10:46 AM
Presenter:
Wilson J Yanez
(Pennsylvania State University)
Authors:
Wilson J Yanez
(Pennsylvania State University)
Yongxi Ou
(The Pennsylvania State University)
Yu-Sheng Huang
(Pennsylvania State University)
Supriya Ghosh
(University of Minnesota)
Emma K Steinebronn
(Pennsylvania State University)
Andre Mkhoyan
(University of Minnesota)
Nitin Samarth
(Pennsylvania State University)
The search for novel topological quantum materials where spin can be controlled electrically is a fundamental scientific aim that might impact the development of low power spin-orbit torque memory devices. In this context, we study charge to spin conversion in thin films of the Weyl semimetal NbAs. We use molecular beam epitaxy to grow it on different III-V semiconductor substrates and perform careful x-ray diffraction and transmission electron microscopy characterization. We show that our films are textured with a defined crystalline orientation that depends on the substrate orientation. We combine them with the metallic ferromagnet permalloy and use spin torque ferromagnetic resonance to show charge to spin conversion at room temperature in the heterostructure. Finally, we combine this measurements with electrical transport characterization, compute the efficiency of the conversion and determine the spin Hall conductivity of NbAs
*This project was funded by SMART, one of seven centers of nCORE, a Semiconductor Research Corporation program, sponsored by the National Institute of Standards and Technology (NIST).
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