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Related Concept Videos

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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Magnetostatic Boundary Conditions

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An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
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Magnetic Field due to Moving Charges01:23

Magnetic Field due to Moving Charges

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A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
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Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
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Planar Hall effect in two-layered ferroelectric-ferromagnetic system.

Artem Alexandrov1, M Ye Zhuravlev2

  • 1Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141700, Russia.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|July 19, 2021
PubMed
Summary
This summary is machine-generated.

Researchers investigated a novel in-plane Hall current in a two-layer quantum system. This effect arises from the interplay between ferromagnetic and ferroelectric materials with spin-orbit coupling.

Keywords:
Hall effectferroelectricsheterostructuresspintronics

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Area of Science:

  • Condensed Matter Physics
  • Quantum Mechanics
  • Materials Science

Background:

  • Spin-orbit coupling is crucial in spintronics.
  • Ferroelectric materials offer tunable electronic properties.
  • Interfacial effects in layered systems are key to novel phenomena.

Purpose of the Study:

  • To explore the emergence of an in-plane Hall current.
  • To analyze this effect in a two-layer ferromagnetic-ferroelectric system.
  • To understand the role of Rashba and Dresselhaus spin-orbit coupling.

Main Methods:

  • Theoretical investigation of a quantum mechanical model.
  • Analysis of a two-layer system: finite ferromagnetic layer and semi-infinite ferroelectric barrier.
  • Examination of spin-orbit coupling effects (Rashba and Dresselhaus).

Main Results:

  • Observation of a novel in-plane Hall current.
  • Identification of the origin of this new Hall effect.
  • Characterization of the dependence of the Hall current on system parameters.

Conclusions:

  • The study reveals a new Hall effect driven by interfacial spin-orbit coupling.
  • The findings provide insights into controlling charge transport in layered spintronic devices.
  • This work contributes to understanding quantum phenomena in complex material heterostructures.