Journal article

Improved Current Density and Magnetization Reconstruction Through Vector Magnetic Field Measurements

DA Broadway, SE Lillie, SC Scholten, D Rohner, N Dontschuk, P Maletinsky, J-P Tetienne, LCL Hollenberg

Physical Review Applied | American Physical Society | Published : 2020

Abstract

Stray magnetic fields contain significant information about the electronic and magnetic properties of condensed matter systems. For two-dimensional (2D) systems, stray field measurements can even allow full determination of the source quantity. For instance, a 2D map of the stray magnetic field can be uniquely transformed into the 2D current density that gave rise to the field and, under some conditions, into the equivalent 2D magnetisation. However, implementing these transformations typically requires truncation of the initial data and involves singularities that may introduce errors, artefacts, and amplify noise. Here we investigate the possibility of mitigating these issues through vecto..

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Grants

Awarded by Australian Research Council (ARC)


Funding Acknowledgements

The authors thank B.C. Johnson for assistance with the preparation of diamond samples, C. Tan, G. Zheng, L. Wang, S. Tian, C. Li, and H. Lei for providing the VI3 samples (described in Ref. [20]) and L. Thiel for useful discussions. We acknowledge support from the Australian Research Council (ARC) through Grants No. FL130100119, No. DE170100129, No. CE170100012, No. LE180100037, and No. DP190101506. D.A.B. and S.E.L. are supported by an Australian Government Research Training Program Scholarship.