Current browse context:
cond-mat.str-el
Change to browse by:
References & Citations
Condensed Matter > Strongly Correlated Electrons
Title: Stoner ferromagnetism in a momentum-confined interacting 2D electron gas
(Submitted on 22 May 2023 (v1), last revised 18 Apr 2024 (this version, v2))
Abstract: In this work we investigate the ground state of a momentum-confined interacting 2D electron gas, a momentum-space analog of an infinite quantum well. The study is performed by combining analytical results with a numerical exact diagonalization procedure. We find a ferromagnetic ground state near a particular electron density and for a range of effective electron (or hole) masses. We argue that this observation may be relevant to the generalized Stoner ferromagnetism recently observed in multilayer graphene systems. The collective magnon excitations exhibit a linear dispersion, which originates from a diverging spin stiffness.
Submission history
From: Ohad Antebi [view email][v1] Mon, 22 May 2023 18:00:07 GMT (662kb,D)
[v2] Thu, 18 Apr 2024 08:18:17 GMT (2957kb,D)
Link back to: arXiv, form interface, contact.