Search results
Results from the WOW.Com Content Network
The term ordinary Hall effect can be used to distinguish the effect described in the introduction from a related effect which occurs across a void or hole in a semiconductor or metal plate when current is injected via contacts that lie on the boundary or edge of the void. The charge then flows outside the void, within the metal or semiconductor ...
Hall effect magnetometers (also called tesla meters or gauss meters) use a Hall probe [23] with a Hall element to measure magnetic fields or inspect materials (such as tubing or pipelines) using the principles of magnetic flux leakage. A Hall probe is a device that uses a calibrated Hall effect sensor to directly measure the strength of a ...
The fractional quantum Hall effect is more complicated and still considered an open research problem. [2] Its existence relies fundamentally on electron–electron interactions. In 1988, it was proposed that there was a quantum Hall effect without Landau levels. [3] This quantum Hall effect is referred to as the quantum anomalous Hall (QAH) effect.
The result of the measurement is called the "Hall mobility" (meaning "mobility inferred from a Hall-effect measurement"). Consider a semiconductor sample with a rectangular cross section as shown in the figures, a current is flowing in the x-direction and a magnetic field is applied in the z-direction.
[1] [2] DHEM is based on the previously developed Differential Hall Effect (DHE) method. [3] In the traditional DHE method, successive sheet resistance and Hall effect measurements on a semiconductor layer are made using Van der Pauw [4] and Hall effect [5] techniques. The thickness of the layer is reduced through successive processing steps in ...
The quantum Hall effect is a quantum mechanical version of the Hall effect, The Hall effect occurs when a magnetic field causes a perpendicular (transverse) current in a material. In the quantum Hall effect, the transverse conductivity is quantized in integer multiples of a basic quantity: /
Scaling of the longitudinal and Hall conductivities in a renormalization group flow-diagram of the quantum Hall effect. On the basis of the Renormalization Group Theory of the instanton vacuum one can form a general flow diagram where the topological sectors are represented by attractive fixed points. When scaling the effective system to larger ...
The Hall effect diagram in drawing "A", for example, at the beginning of the article may not be a good representation of the flow of electrons in the Hall element. It shows electrons flowing in a curved narrrow beam rather than flowing throughout the Hall element with many microscopic collisions that have electrons moving in all directions ...