NDLI: Spin-dependent bandgap structures and spin filtering in graphene with multiple ferromagnetic barriers

Content Provider	IEEE Xplore Digital Library
Author	Zhang, R. Li, J. Sun, R. Peng, R. Huang, R. Wang, M.
Copyright Year	2015
Description	Author affiliation: Dept. of Phys., Nanjing Univ., Nanjing, China (Zhang, R.; Li, J.; Sun, R.; Peng, R.; Huang, R.; Wang, M.)
Abstract	Motivated by the experimental isolation of graphene [1], intense investigations have been paid the physical properties of the two-dimensional (2D) honeycomb lattice. Graphene is regarded as a promising material for spintronic applications due to its weak spin-orbit coupling and long spin lifetimes [2]. Up to now, several groups have studied the spin transport properties in graphene with magnetic and electrostatic modulation potentials [3]. How to get efficient spin filtering is one of the research focuses for the application of spintronics. In this work, we investigate spin-dependent bandgap structures and spin filtering in graphene with multiple ferromagnetic barriers. It is shown that the spin-up and spin-down electrons possess different bandgap structures in the case of oblique incidence. As a result, full spin polarization can be achieved within several separated energy intervals. The width of the energy interval with full spin polarization can be effectively manipulated by adjusting the strength of the exchange field. Correspondingly, conductance steps with full spin polarization are observed in the systems. Our investigations may have potential applications in the design of carbon-based spin filters.
Starting Page	1
Ending Page	1
File Size	358591
Page Count	1
File Format	PDF
e-ISBN	9781479973224
DOI	10.1109/INTMAG.2015.7157757
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-11
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photonic band gap Graphene Electric potential Filtering Magnetoelectronics Strips Reflection
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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