Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session L41: Heterostructures and Thin Films for Skyrmions
11:15 AM–2:15 PM,
Wednesday, March 6, 2019
BCEC
Room: 209
Sponsoring
Units:
GMAG DMP
Chair: Andrew Kent, New York Univ NYU
Abstract: L41.00006 : Stability of Skyrmions and Topological Hall Effect in Mn2CoAl thin films
12:39 PM–12:51 PM
Presenter:
Guy Dubuis
(Victoria University of Wellington)
Authors:
Guy Dubuis
(Victoria University of Wellington)
Yao Zhang
(Victoria University of Wellington)
Simon Granville
(Victoria University of Wellington)
The presence of skyrmions can be detected by observing the topological contribution to the Hall resistance, due to the time-varying magnetic field experienced by an electron travelling through a material hosting skyrmions. We observe skyrmions in thin films of the ferromagnetic spin-gapless semiconductor Heusler alloy Mn2CoAl capped by Pd.[4] We can engineer our thin films to make the skyrmions stable from 3K to above room temperature. By careful control of the magnetic and thermal history of the sample, we can condition various forms of skyrmions in this material. In order to understand their stability, we have measured time dependent Hall resistance and magnetization in the skyrmion regions. We observe skyrmions that are stable for at least hours at room temperature in the absence of a magnetic field.
References:
1 D. Chandler, MIT News., 2017
2 A. Fert, V. Cros, and J. Sampaio, Nat. Nanotechnol., 2013, 8, 152–156 (2013).
3 S. Luo et al., Nano Lett., 2018, 18, 1180-1184
4 B. Ludbrook et al., Sci. Rep., 2017, 13620
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