Enhancement of electron magnetic susceptibility due to many-body interactions in monolayer MoSe$_2$
arXiv (Cornell University)(2023)
摘要
Employing the original, all-optical method, we quantify the magnetic susceptibility of a two-dimensional electron gas (2DEG) confined in the MoSe$_2$ monolayer in the range of low and moderate carrier densities. The impact of electron-electron interactions on the 2DEG magnetic susceptibility is found to be particularly strong in the limit of, studied in detail, low carrier densities. Following the existing models, we derive $g_0 = 2.5 \pm 0.4$ for the bare (single particle) g-factor of the ground state electronic band in the MoSe$_2$ monolayer. The derived value of this parameter is discussed in the context of estimations from other experimental approaches. Surprisingly, the conclusions drawn differ from theoretical ab-initio studies.
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关键词
magnetic susceptibility,monolayer,electron,many-body
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