Fig. 4: Theoretical investigation of pressure-induced magnetic transition. | Nature Communications

Fig. 4: Theoretical investigation of pressure-induced magnetic transition.

From: Pressure-induced transition from a Mott insulator to a ferromagnetic Weyl metal in La2O3Fe2Se2

Fig. 4: Theoretical investigation of pressure-induced magnetic transition.The alt text for this image may have been generated using AI.

a magnetic phase transition of La2O3Fe2Se2 polycrystal within different Hubbard U values. b Exchange coupling parameters as a function of pressure within U = 2.1 eV. The inset illustrate three exchange interactions, including the nearest-neighbor interaction of Fe-Fe contribution (J1), the next-nearest-neighbor interaction of Fe-Se-Fe contribution (J2), and the next-nearest-neighbor interaction of Fe-O-Fe contribution (J2′).

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