article · Nano Select
Abstract The competition between superconductivity and magnetism has been studied for the ongoing investigation of mechanisms in unconventional superconductors. Fe 1+y Te 1−x Se x is distinct among iron‐based superconductors due to its structural simplicity, comprising solely FeTe/Se layers that are favorable for probing the superconductivity mechanism. The main goal of this article is to focus on the computational investigation of the interplay of magnetism and superconductivity in the Fe 1+y Te 1−x Se x multiband superconductor. From the electronic structure of the Fe 1+y Te 1−x Se x superconductor, a two‐band Hamiltonian model was considered to examine the interplay of magnetism and superconductivity in the Fe 1+y Te 1‐x Se x superconductor. Using Green's function formalism with the Hamiltonian model, the mathematical statements for the superconducting (Sc) gap parameter, spin density wave (SDW) ordering parameter, Sc and magnetic transitional temperatures have been obtained. Using these mathematical expressions, the phase diagram of transition temperatures versus the gap parameters for the Fe 1+y Te 1‐x Se x superconductor has been plotted. The intersection region in the phase diagram of transition temperatures as a function of the SDW order parameter has been plotted to show the possible interplay of superconductivity and magnetism in a Fe 1+y Te 1‐x Se x iron‐based superconductor.
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DOI: 10.1002/nano.202400038
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