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The Hall Effect01:30

The Hall Effect

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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.
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Ferromagnetism01:31

Ferromagnetism

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Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
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Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

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Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
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Atomic Nuclei: Nuclear Spin State Overview01:03

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NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of...
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Magnetic Field Due To A Thin Straight Wire01:28

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Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
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Diamagnetism01:26

Diamagnetism

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Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
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相关实验视频

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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
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工程拓学旋转大厅效应在2D多重金属材料中的作用.

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  • 1School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Shandanan Str. 27, Jinan, 250100, P. R. China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)
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概括
此摘要是机器生成的。

研究人员为spintronics设计了拓旋转霍尔效应 (TSHE). 他们通过将反铁磁拓电荷和Dzyaloshinskii-Moriya相互作用度在2D多铁中合起来,实现了TSHE的铁电控制.

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2D多铁质材料是多维的材料.抗铁磁性双马龙是一种反铁磁性双马龙.铁电是铁电的发电源.这是第一原则.拓旋转的霍尔效应

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相关实验视频

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科学领域:

  • 凝聚物质物理学 凝聚物质物理学
  • 这就是Spintronics.
  • 材料科学是一种材料科学.

背景情况:

  • 拓旋转霍尔效应 (TSHE) 产生于旋转动量锁定和实空间拓学的相互作用.
  • TSHE的内在稳固性阻碍了其在自旋电子学中的实际应用.
  • 对TSHE属性的可控操纵仍然是一个重大挑战.

研究的目的:

  • 开发一种可控制和可逆的TSHE特征工程方法.
  • 建立磁性材料中铁电性质和TSHE之间的联系.
  • 探索TSHE在下一代自旋电子设备中的潜力.

主要方法:

  • 对称性和模型分析,以了解底层物理.
  • 模拟材料属性的第一原则计算.
  • 原子旋转模型模拟以验证拟议的机制.

主要成果:

  • 通过与抗铁磁双子体中的Dzyaloshinskii-Moriya相互作用奇拉性合,证明了TSHE的铁电控制.
  • 确定了反铁磁拓电荷和洛伦兹力作为关键相互作用元素.
  • 在实验上可行的多铁单层CuCr2Se4.4中验证了该机制.

结论:

  • 该研究提出了一种通过铁电开关控制TSHE的新方法.
  • 这项工作弥合了TSHE基础研究和自旋电子应用之间的差距.
  • 它为设计使用多铁材料的先进自旋电子设备开辟了新的途径.