Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session B27: Applications of Semiconductors, Dielectrics, and Complex Oxides
11:15 AM–2:03 PM,
Monday, March 2, 2020
Room: 404
Sponsoring
Unit:
FIAP
Chair: Meeghage Perera, National Research Council
Abstract: B27.00010 : Comparison of spin photocurrent in devices based on in-plane or out-of-plane magnetized CoFeB spin detectors
View Presentation Abstract
Presenter:
Pierre Renucci
(Institut National des Sciences Appliquees de Toulouse)
Authors:
Pierre Renucci
(Institut National des Sciences Appliquees de Toulouse)
Xiaodi Xue
(Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing Key Laboratory of Low Dimensional Semiconductor Materials)
Laipan Zhu
(Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing Key Laboratory of Low Dimensional Semiconductor Materials)
Wei Huang
(Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing Key Laboratory of Low Dimensional Semiconductor Materials)
Yu Liu
(Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing Key Laboratory of Low Dimensional Semiconductor Materials)
Yang Zhang
(Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing Key Laboratory of Low Dimensional Semiconductor Materials)
Xiaolin Zeng
(Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing Key Laboratory of Low Dimensional Semiconductor Materials)
Jing Wu
(Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing Key Laboratory of Low Dimensional Semiconductor Materials)
Bo Xu
(Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing Key Laboratory of Low Dimensional Semiconductor Materials)
Zhanguo Wang
(Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing Key Laboratory of Low Dimensional Semiconductor Materials)
Yonghai Chen
(Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing Key Laboratory of Low Dimensional Semiconductor Materials)
Weifeng zhang
(Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China)
Xavier Marie
(Institut National des Sciences Appliquees de Toulouse)
Yuan LU
(Université de Lorraine, Institut Jean Lamour, UMR CNRS 7198, campus ARTEM, 2 Allée André Guinier, 54011, Nancy, France)
We have measured a helicity-dependent photocurrent at zero external magnetic field in a device based on a semiconductor quantum well embedded in a p-i-n junction. The device is excited under vertical incidence with circularly polarized light. The spin filtering effect is evidenced in the temperature range 77–300 K owing to a CoFeB/MgO spin filter with out-of-plane magnetization in remanence. The helicity-dependent photocurrent is explored as a function of the temperature and bias. These characteristics are compared with those of a spin
photocurrent device with in-plane magnetized CoFeB/MgO spin filter, excited under oblique incidence with circularly polarized light. In contrast to the in-plane spin filter device, the circularly polarized light asymmetry of the photocurrent in the out-of-plane device depends weakly on the external bias. The two devices are sensitive to the spin filtering of either the in-plane (Sx) or out-of-plane (Sz) photogenerated electron spin in the semiconductor quantum well. The photocurrent results can be explained by the Dyakonov-Perel electron spin-relaxation mechanism. Our study reveals the large spin relaxation anisotropy in III-V zinc-blende quantum wells in the presence of a vertical electric field. [1] Phys. Rev. B 100, 045417 (2019)
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