Anomalous Magnons in a Quantum Hall Ferromagnet with Strong Interaction at Filling Factor 2

被引：0

作者：

Van’kov A.B. ^{[1
]}

Koreyev A.S. ^{[1
]}

Berezhnoy P.S. ^{[1
]}

Kukushkin I.V. ^{[1
]}

机构：

[1] Institute of Solid State Physics, Russian Academy of Sciences, Moscow oblast, Chernogolovka

来源：

Bulletin of the Russian Academy of Sciences: Physics | 2023年 / 87卷 / 02期

关键词：

Ferromagnetic materials - Ferromagnetism - Superconducting materials;

D O I：

10.3103/S1062873822700794

中图分类号：

学科分类号：

摘要：

Abstract: In two-dimensional electronic systems, at large values of the Wigner–Seitz parameter rs, an anomalous branch of magnons was found. In a quantum Hall ferromagnet state with ν = 2, the magnon dispersion reveals a magnetoroton minimum with depth dependent on electron density. Magnetorotons with opposite momenta are shown to attract each other. © 2023, Allerton Press, Inc.

引用

页码：133 / 137

页数：4

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