Spin caloritronics in two-dimensional CrI3/NiCl2 van der Waals heterostructures

Two-dimensional van der Waals heterostructures have recently emerged as attractive candidates to work as spintronic and optoelectronic devices

Xingyi Tan; Linjie Ding; Gui-Fang Du; Hua-Hua Fu

2021

Scholarcy highlights

  • Two-dimensional van der Waals heterostructures have recently emerged as attractive candidates to work as spintronic and optoelectronic devices
  • The first-principles calculations uncover that the magnetic configurations of CrI3/NiCl2 van der Waals heterostructures can be converted to a ferromagnetic, an antiferromagnetic, and even a bipolar magnetic semiconducting state by an external electric field
  • Two thermal spin-dependent currents with opposite spin orientations can be driven by a temperature gradient to flow in opposite transport directions independently in the different layers of vdW heterostructures, demonstrating that the CrI3/NiCl2 vdW heterostructures can exhibit a nearly perfect thermal spin-filtering effect in each layer while generating a well-defined spin-Seebeck effect in the whole system
  • The light green lines represent the NiCl2, while the pink lines represent CrI3

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