Title
Spin-valley filtering in strained graphene structures with artificially induced carrier mass and spin-orbit coupling Spin-valley filtering in strained graphene structures with artificially induced carrier mass and spin-orbit coupling
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
New York, N.Y. ,
Subject
Physics
Source (journal)
Physical review letters. - New York, N.Y.
Volume/pages
113(2014) :4 , 5 p.
ISSN
0031-9007
0031-9007
Article Reference
046601
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The interplay of massive electrons with spin-orbit coupling in bulk graphene results in a spin-valley dependent gap. Thus, a barrier with such properties can act as a filter, transmitting only opposite spins from opposite valleys. In this Letter we show that a strain induced pseudomagnetic field in such a barrier will enforce opposite cyclotron trajectories for the filtered valleys, leading to their spatial separation. Since spin is coupled to the valley in the filtered states, this also leads to spin separation, demonstrating a spin-valley filtering effect. The filtering behavior is found to be controllable by electrical gating as well as by strain.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/7c3157/8177.pdf
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