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anisotropic dispersion 1diagrammatic monte carlo 1ferromagnetism 1stoner transition 1two-dimensional electron systems 1valley polarization 1

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cond-mat.str-el2026

Stoner transitions beyond mean-field in two-dimensional electronic systems: a diagrammatic Monte Carlo study

Yueh-Chen Lee, Nikolay V. Prokof'ev, Andrey V. Chubukov

The paper investigates ferromagnetic Stoner transitions in two‑dimensional electron systems with one or two valleys beyond the mean‑field ladder approximation, using diagrammatic M…