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Berry-phase interpretation of thin-film micromagnetism

https://doi.org/10.1063/9.0000332

Skomski, R.; Balasubramanian, B.; Ullah, A.; Binek, C.; Sellmyer, D. J. (March 2022, AIP Advances)

Magnetic flux densities ( B-fields) and field intensities ( H-fields) in thin films are investigated from the viewpoints of Berry phase and topological Hall effect. The well-known origin of the topological Hall effect is an emergent B-field originating from the Berry phase of conduction electrons, but Maxwell’s equations predict the relevant perpendicular component B z to be zero. This paradox is solved by treating the electrons as point-like objects in Lorentz cavities. These cavities can also be used to interpret magnetization measurements in the present and other contexts, but structural and magnetic inhomogeneities lead to major modifications of the Lorentz-hole picture.
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New Heusler compounds in Ni-Mn-In and Ni-Mn-Sn alloys

https://doi.org/10.1038/s41598-019-44179-2

Li, X.-Z.; Zhang, W.-Y.; Valloppilly, S.; Sellmyer, D. J. (December 2019, Scientific Reports)

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Noncollinear spin structure in $F e_{3 + x} C o_{3 - x} T i_{2}$ ( $x = 0, 2, 3$ ) from neutron diffraction

https://doi.org/10.1103/PhysRevMaterials.3.064403

Wang, Haohan; Balasubramanian, Balamurugan; Pahari, Rabindra; Skomski, Ralph; Liu, Yaohua; Huq, Ashfia; Sellmyer, D. J.; Xu, Xiaoshan (June 2019, Physical Review Materials)
Unusual perpendicular anisotropy in Co ₂ TiSi films

https://doi.org/10.1088/1361-6463/aae80f

Jin, Yunlong; Valloppilly, Shah; Kharel, Parashu; Pathak, Rohit; Kashyap, Arti; Skomski, Ralph; Sellmyer, D J (January 2019, Journal of Physics D: Applied Physics)

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Structural and magnetic properties of bulk Mn ₂ PtSn

https://doi.org/10.1088/1361-648X/aae652

Herran, J; Prophet, S; Jin, Y; Valloppilly, S; Kharel, P R; Sellmyer, D J; Lukashev, P V (November 2018, Journal of Physics: Condensed Matter)

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Magnetic and magnetocaloric properties of Co _2-x Fe _x VGa Heusler alloys

https://doi.org/10.1063/1.5006646

Schroeder, K.; Waybright, J.; Kharel, P.; Zhang, W.; Valloppilly, S.; Herran, J.; Lukashev, P.; Huh, Y.; Skomski, R.; Sellmyer, D. J. (May 2018, AIP Advances)

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Structural, magnetic, and electron-transport properties of epitaxial Mn ₂ PtSn films

https://doi.org/10.1063/1.5045667

Jin, Y.; Valloppilly, S.; Kharel, P.; Waybright, J.; Lukashev, P.; Li, X. Z.; Sellmyer, D. J. (September 2018, Journal of Applied Physics)

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