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Updated: Oct 2, 2025
Fabricating van der Waals Heterostructures with Precise Rotational Alignment
Published on: July 5, 2019
Perfect spin Seebeck effect, spin-valve, spin-filter and spin-rectification based on the heterojunction of sawtooth
Yun Ni1,2, Hu Hua1,2, Jia Li1,2
1College of Science, Hubei University of Technology, Wuhan, 430068, China. niyun@hbut.edu.cn.
Abstract:
In order to develop low-power-consumption electronic devices, we studied a heterojunction composed of a 5,4-sawtooth graphene nanoribbon and 6,6,12-graphyne nanoribbon by using first-principles calculations combined with the non-equilibrium Green's function approach. Some spin caloritronic and spintronic devices can be realized based on the heterojunction, exhibiting excellent and multifunctional properties: a net spin current and perfect spin Seebeck effect are generated, a thermal induced and bias induced colossal magnetoresistance is obtained, and a spin filter with 100% spin polarization and a spin rectification with a high rectification ratio are acquired. Our results indicate that the proposed heterojunction is a promising candidate for multi-effect and low-power-consumption electronic devices.
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