Abstract

We study the room-temperature electrical control of charge and spin transport in high-quality bilayer graphene, fully encapsulated with hBN and contacted via 1D spin injectors. We show that spin transport in this device architecture is measurable at room temperature and its spin transport parameters can be modulated by opening of a band gap via a perpendicular displacement field. The modulation of the spin current is dominated by the control of the spin relaxation time with displacement field, demonstrating the basic operation of a spin-based field-effect transistor.

Details

Title
Exploring room temperature spin transport under band gap opening in bilayer graphene
Author
Anderson, Christopher R. 1   VIAFID ORCID Logo  ; Natera-Cordero, Noel 2   VIAFID ORCID Logo  ; Guarochico-Moreira, Victor H. 3   VIAFID ORCID Logo  ; Grigorieva, Irina V. 4   VIAFID ORCID Logo  ; Vera-Marun, Ivan J. 4   VIAFID ORCID Logo 

1  University of Manchester, Department of Physics and Astronomy, Manchester, UK (GRID:grid.5379.8) (ISNI:0000 0001 2166 2407) 
2  University of Manchester, Department of Physics and Astronomy, Manchester, UK (GRID:grid.5379.8) (ISNI:0000 0001 2166 2407); Consejo Nacional de Ciencia y Tecnología (CONACyT), Mexico City, Mexico (GRID:grid.418270.8) (ISNI:0000 0004 0428 7635) 
3  University of Manchester, Department of Physics and Astronomy, Manchester, UK (GRID:grid.5379.8) (ISNI:0000 0001 2166 2407); Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ciencias Naturales y Matemáticas, Guayaquil, Ecuador (GRID:grid.442143.4) (ISNI:0000 0001 2107 1148); Escuela Superior Politécnica del Litoral, ESPOL, Center of Nanotechnology Research and Development (CIDNA), Guayaquil, Ecuador (GRID:grid.442143.4) (ISNI:0000 0001 2107 1148) 
4  University of Manchester, Department of Physics and Astronomy, Manchester, UK (GRID:grid.5379.8) (ISNI:0000 0001 2166 2407); University of Manchester, National Graphene Institute, Manchester, UK (GRID:grid.5379.8) (ISNI:0000 0001 2166 2407) 
Pages
10343
Publication year
2023
Publication date
2023
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41598-023-36800-2
ProQuest document ID
2829616870
Copyright
© The Author(s) 2023. corrected publication 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.