In FeSe, in-plane uniaxial compression after nematic suppression induces a Lifshitz transition via Se pz-Fe dx2-y2 band crossing along Gamma-Z, increasing electronic dimensionality and suppressing superconductivity unlike out-of-plane compression.
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Uniaxial Compression-Induced Anisotropy and Electronic Dimensionality in the Iron-Based Superconductor FeSe
In FeSe, in-plane uniaxial compression after nematic suppression induces a Lifshitz transition via Se pz-Fe dx2-y2 band crossing along Gamma-Z, increasing electronic dimensionality and suppressing superconductivity unlike out-of-plane compression.