Magnetic skyrmions, novel topologically stable spin vortices, hold promise for next-generation magnetic storage. Nanoscale skyrmion domain size and their low threshold for current-driven motion enable high information storage density with ultralow energy consumption. The motivation behind my research work was development of synthesis route for skyrmion hosting non-centrosymmetric cubic B20 materials for the investigation of interesting skyrmion physics. Nanostructures of skyrmion hosting materials known to stabilize magnetic skyrmion phase over larger range of temperature and applied magnetic field in comparison to bulk and thin films systems. In addition, nanowire (NW) geometry could provide natural platform for envisioned racetrack memory devices. I have developed “bottom-up” chemical vapor deposition (CVD) techniques for synthesis of skyrmion hosting MnSi, Fe1-xCoxSi and FeGe nanostructures. These materials act as perfect model systems to understand three-dimensional spin structure such as skyrmions that could assist in development of skyrmion detection techniques. 

N. Mathur, M. J. Stolt, and S. Jin. Magnetic skyrmions in nanostructures of non-centrosymmetric materials. APL Materials, 7(12):120703, 2019 (link)

N. Mathur, M. J. Stolt, K. Niitsu, X. Yu, D. Shindo, Y. Tokura, and S. Jin. Electron holography and magnetotransport measurements reveal stabilized magnetic skyrmions in Fe1-xCoxSi nanowires. ACS Nano, 13(7):7833–7841, 2019 (link) 

M. J. Stolt, Z.-A. Li, B. Phillips, D. Song, N. Mathur, R. E. Dunin-Borkowski, and S. Jin. Selective chemical vapor deposition growth of cubic FeGe nanowires that support stabilized magnetic skyrmions. Nano Letters, 17(1):508–514, 2017 (link) 

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