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Two-dimensional Janus monolayers with tunable electronic and magnetic properties

  • Invited Paper
  • FOCUS ISSUE: Structure-Property Relationships in Emerging Two-dimensional Materials
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Abstract

In the post graphene era, the discovery of magnetism in two-dimensional (2D) intrinsic nanomagnets has opened up exciting possibilities for low-dimensional spintronics. In this article, we have reported three new 2D Janus nanomagnets VBrCl2, VBrI2, and VClBrI for the first time. First-principles based density functional theory calculations reveal that these monolayers are intrinsically magnetic with indirect band gap semiconducting properties and further the magnetic and electronic properties of these monolayers are enhanced with the application of biaxial strain and electric field. We observe interesting electronic and magnetic phase transitions, tunable band gap, and supreme enhancement of the Curie temperature (~ 686%). Large magnetic anisotropic energy (MAE) with high magnetic moment and tunable band gap property make these Janus materials useful candidates for future information storage, optoelectronics, and 2D spin circuit development.

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The data that support the findings of this study are available from the corresponding authors upon reasonable request.

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Acknowledgments

SJR acknowledges the financial support received through DST-INSPIRE Grant (Ref: DST/INSPIRE/04/2015/003087), DST-ECR Grant (project’s reference no. ECR/2017/002223), DST-CRG Grant (Ref: CRG/2019/003289) and funding received through UGC-DAE Consortium for Scientific Research (Ref: CRS-M-321). The authors gratefully acknowledge the support and resources provided by the PARAM SHIVAY Facility at the IIT BHU under the National Supercomputing Mission of Government of India.

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  1. Department of Physics, Indian Institute of Technology Patna, Bihta, 801106, India

    T. Mukherjee, S. Kar & S. J. Ray

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Mukherjee, T., Kar, S. & Ray, S.J. Two-dimensional Janus monolayers with tunable electronic and magnetic properties. Journal of Materials Research 37, 3418–3427 (2022). https://doi.org/10.1557/s43578-022-00753-5

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