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Quantum Monte Carlo Study of a Dominant<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>s</mml:mi></mml:math>-Wave Pairing Symmetry in Iron-Based Superconductors
We perform a systematic quantum Monte Carlo study of the pairing correlation in the ${S}_{4}$ symmetric microscopic model for iron-based superconductors. It is found that the pairing with an extensive $s$-wave symmetry robustly dominates over other pairings at low temperature in a reasonable parameter region regardless of the change of …