期刊
PHYSICAL REVIEW B
卷 105, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.105.094444
关键词
-
资金
- French National Research Agency (ANR) [ANR-16-CE24-0027]
- Interdisciplinary Thematic Institute QMat of the University of Strasbourg
- CNRS
- Inserm
- French Investments for the Future Program [ANR 10 IDEX 0002, ANR 20 SFRI 0012, ANR-17-EURE-0024]
- High Performance Computing Center of the University of Strasbourg - Equipex Equip@Meso project (Programme Investissements d'Avenir)
- CPER Alsacalcul/Big Data
- Region Grand Est through its FRCR call (NanoTeraHertz and RaNGE projects)
- French PIA project Lorraine Universite d'Excellence [LUE-N4S, ANR-15IDEX-04-LUE]
- FEDER-FSE Lorraine et Massif Vosges
- European Union Program
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [TRR 173 - 268565370, SPP2137]
- Agence Nationale de la Recherche (ANR) [ANR-16-CE24-0027] Funding Source: Agence Nationale de la Recherche (ANR)
Spontaneous symmetry breaking is a common phenomenon in physics, but it is difficult to study in practice due to its vanishing coupling to experimental probes and/or strong interaction with other fluctuations. In this study, the Goldstone and Higgs spin-wave modes were observed by studying a thin film with specific magnetic properties.
Spontaneous symmetry breaking is ubiquitous in physics. Its spectroscopic signature consists in the softening of a specific mode upon approaching the transition from the high-symmetry side and its subsequent splitting into a zero-frequency Goldstone mode and a nonzero-frequency Higgs mode. Although they determine the whole system dynamics, these features are difficult to address in practice because of their vanishing coupling to most experimental probes and/or their strong interaction with other fluctuations. In this paper, we consider a periodic magnetic modulation occurring in a ferromagnetic film with perpendicular-to-plane magnetic anisotropy and observe its Goldstone and Higgs spin-wave modes at room temperature using microwave and optical techniques. This simple system constitutes a particularly convenient platform for further exploring the dynamics of symmetry breaking.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据