相关实验视频
Updated: Jul 4, 2025
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
9.0K
双希格斯模式纠在CuTe中的单子晶格中
SeongJin Kwon1,2, Hyunjin Jung1,2, SangJin Lee1,2
1Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang, 37673, Korea.
Nature communications
|February 1, 2024
概括
研究人员在晶体中观察到两种合的希格斯模式,揭示了在对称性破碎的材料中出现新的集体现象. 这一发现将希格斯模式的概念扩展到理论物理之外.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 粒子物理学 类似的东西
背景情况:
- 希格斯模式,在材料中与希格斯粒子类似,解释了自发对称性破坏系统中的集体现象.
- 现有的研究已经探索了诸如超导体和超流体等各种材料中的希格斯模式,但多重希格斯模式仍然在很大程度上是理论上的.
研究的目的:
- 在固态系统中调查多个希格斯模式的存在和行为.
- 观察和描述结合的希格斯模式及其与单子格子的关系.
- 探索由同时发生的对称性破坏引起的新型集体现象.
主要方法:
- 使用扫描道显微镜 (STM) 对充电密度波 (CDW) 状态进行实时空间观测.
- 分析了1D CDW状态在一个异构转变金属单基化物 (CuTe) 晶体中的结构.
主要成果:
- 在CuTe中发现了两个截然不同的但退化的CDW结构,这些结构是由于层逆对称性被打破而产生的.
- 在这些CDW结构的幅度中观察到异相振荡,形成交替的域和相位移域壁.
- 确定了与单子格子相互作用的合希格斯模式,得到兰道理论的支持.
结论:
- 这项研究提供了第一个实体空间证据,证明了固体中多个,合的希格斯模式.
- 这一发现表明,新兴的集体模式是如何通过同时破坏不同的对称性而产生的.
- 结果为希格斯模式及其在理解复杂物质行为方面的潜力提供了新的视角.
更多相关视频
相关概念视频
01:03Modes of Standing Waves - I
2.9K
A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This...
2.9K
01:12Bewley Lattice Diagram
650
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
650
01:28Standing Waves in a Cavity
923
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
923
01:04Modes of Standing Waves: II
852
The starting point for expressing the modes of standing waves is understanding the boundary conditions that the waves must follow. The boundary conditions are derived from the physical understanding of how the standing waves are sustained, that is, how the vibrating particles of the medium behave at the boundaries imposed on them.
For a tube open at one end and closed at the other filled with air, the modes are such that there is always an antinode at the open end and a node at the closed end....
For a tube open at one end and closed at the other filled with air, the modes are such that there is always an antinode at the open end and a node at the closed end....
852
01:28Symmetry in Maxwell's Equations
3.4K
Once the fields have been calculated using Maxwell's four equations, the Lorentz force equation gives the force that the fields exert on a charged particle moving with a certain velocity. The Lorentz force equation combines the force of the electric field and of the magnetic field on the moving charge. Maxwell's equations and the Lorentz force law together encompass all the laws of electricity and magnetism. The symmetry that Maxwell introduced into his mathematical framework may not be...
3.4K
02:54Trends in Lattice Energy: Ion Size and Charge
23.9K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
23.9K