Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

The Hall Effect01:30

The Hall Effect

4.1K
Edwin H. Hall, in the year 1879, devised an experiment that could be used to identify the polarity of the predominant charge carriers in a conducting material. From a historical perspective, this experiment was the first to demonstrate that the charge carriers in most metals are negative.
4.1K
The de Broglie Wavelength02:32

The de Broglie Wavelength

33.0K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
33.0K
Atomic Nuclei: Nuclear Spin State Population Distribution01:14

Atomic Nuclei: Nuclear Spin State Population Distribution

2.3K
Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
2.3K
Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule01:10

Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule

2.4K
In the AX proton spin system, proton A can sense the two spin states of a coupled proton X, resulting in a doublet NMR signal with two peaks of equal (1:1) intensity. When proton A is coupled to two equivalent protons (AX2 spin system), the spin states of each X can be aligned with or against the external field, creating three possible scenarios. This results in a 1:2:1  triplet signal, where the central peak corresponds to the chemical shift of A and is twice as large or intense as the...
2.4K
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.5K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.5K
The Uncertainty Principle04:08

The Uncertainty Principle

31.3K
Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He...
31.3K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Global Tissue Specific Transcriptome Analysis of Musa spp., cv. Grand Naine (AAA) Across Twelve Different Tissues.

Physiologia plantarum·2025
Same author

36-year study reveals stability of a wild wheat population across microhabitats.

Molecular ecology·2024
Same author

Moderate-severe beta-thalassemia intermedia phenotype caused by sextuplicated alpha-globin gene allele in two beta-thalassemia carriers.

American journal of hematology·2024
Same author

Large N Fractons.

Physical review letters·2024
Same author

Isometric Evolution in de Sitter Quantum Gravity.

Physical review letters·2023
Same author

A lateralized alpha-band marker of the interference of exogenous attention over endogenous attention.

Cerebral cortex (New York, N.Y. : 1991)·2023

相关实验视频

Updated: Jan 18, 2026

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
10:36

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

11.1K

从大N互动费米子的分数霍尔物理学.

Kristan Jensen1, Amir Raz2

  • 1University of Victoria, Department of Physics and Astronomy, Victoria, British Columbia V8W 3P6, Canada.

Physical review letters
|September 10, 2025
PubMed
概括
此摘要是机器生成的。

研究人员利用一种新的理论方法从强烈相互作用的费米子中获得了分数的霍尔状态. 这种方法揭示了这些量子态的基本特性,即使在简化模型中也适用.

更多相关视频

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

10.2K
Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

8.1K

相关实验视频

Last Updated: Jan 18, 2026

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
10:36

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

11.1K
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

10.2K
Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

8.1K

科学领域:

  • 凝聚物质物理学 凝聚物质物理学
  • 量子力学就是量子力学.
  • 多体物理多体物理

背景情况:

  • 分数量子霍尔效应 (FQHE) 状态是2D电子系统中观察到的复杂现象.
  • 了解FQHE从强烈相互作用的费米子中出现的过程是一个关键的挑战.
  • N不变相互作用模型为研究多体量子系统提供了一个框架.

研究的目的:

  • 通过使用相互作用费米子的理论模型,从第一原理中导出分数的霍尔状态.
  • 为了研究U (N) -不变相互作用在N-物种费米子系统中的作用.
  • 探索这些状态在大N (N≫1) 和单个N (N=1) 极限中的行为.

主要方法:

  • 在最低的兰道水平中解决N种费米子的第二量子化路径积分.
  • 在固定的化学潜力下分析路径积分的点.
  • 研究这些溶液在N≫1极限中的行为及其在N=1.1时的持久性.

主要成果:

  • 识别了与填充 (p/q) 的分数霍尔状态相对应的位点.
  • 证明整数p和q取决于化学潜力和相互作用参数.
  • 发现q个不同的状态通过转换对称关系在一个圆柱体上,展现分数电荷激发.
  • 表明这些分数的霍尔状态及其填充物在N=1.1时作为作用的极限存在.

结论:

  • 提供了从强烈相互作用的费米子中导出分数霍尔状态的第一原理.
  • 建立了一个理论框架,将U(N) -不变相互作用与FQHE的出现联系起来.
  • 突出了这些量子状态在粒子数的不同极限上的强度.