CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 11090 > Article
Presentation
10 September 2019 Robust manipulation of magnetic properites in dilute magnetic semiconductor (Ga,Mn)As via organic molecules (Conference Presentation)
Xiaolei Wang, Hailong Wang, Peng Xiong, Jianhua Zhao
Author Affiliations +
Proceedings Volume 11090, Spintronics XII; 1109008 (2019) https://doi.org/10.1117/12.2526480
Event: SPIE Nanoscience + Engineering, 2019, San Diego, California, United States
Abstract
Low power control of magnetic properties in nanoscale is of great significance and has attracted lots of interests in magnetic data processing and novel spintronic applications. So far, there have been strenuous efforts on controlling the Curie temperature (Tc) and magnetization (M) by a variety of means. A representative example which has generated much excitement is using electrostatic field-effect gating, which has been shown to alter the magnetic properties of (III, Mn)V films in a certain extent. In this work, we utilize the surface molecular decoration as a new route to achieve large manipulation of Tc, M magnitude and direction in the (Ga,Mn)As films. Carrier densities of the films are vastly changed by two kinds of molecules acting as the electron donors and acceptors, resulting in a prominent variation of Tc up to 36 K and M direction up to 27˚. Charge transfer mechanism through the interface is established, indicating much larger extent of the molecular modulation than electrical gating. Moreover, arbitrary self-assembled monolayer (SAM) nanopatterns on the (Ga,Mn)As film surface could be created via dip-pen nanolithography (DPN), which offers a convenient method for generating magnetic nanostructures. This work opens a more efficient and functional pathway of manipulating magnetic properties in a greater range, and realizes nano-patterns of molecule/semiconductor hybrid structure with marked prospects in disparate areas of spintronic research and nanotechnology in future application.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Xiaolei Wang, Hailong Wang, Peng Xiong, and Jianhua Zhao "Robust manipulation of magnetic properites in dilute magnetic semiconductor (Ga,Mn)As via organic molecules (Conference Presentation)", Proc. SPIE 11090, Spintronics XII, 1109008 (10 September 2019); https://doi.org/10.1117/12.2526480
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Magnetism
Molecules
Magnetic semiconductors
Technetium
Nanostructures
Scanning probe lithography
Spintronics
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top