Questions tagged [hall-effect]
The Hall effect is a voltage arising from an electric field perpendicular to a magnetic field in a material. It is to be distinguished from the quantum hall effect (QHE).
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Shubnikov-de-Haas effect and Quantum Hall effect
I am wondering if these two phenomena are two names for the same thing or whether these are distinct effects and there are situation where one appears, but the other one doesn't?
Both seem to produce ...
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Longitudinal conductivity from density of states (DOS)
It is well-known that using the so-called Streda formula, the transversal conductivity $\sigma_{xy}$ and thus the Hall conductivity in a two-dimensional material is given as the derivative of the ...
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How to separate electron and hole mobilities in a intrinsic semiconductor?
I read in textbooks that the electric conductivity of a semiconductor is $\sigma=q(n\mu_n+p\mu_p)$, where $q$ is an electron's charge, $n$ and $p$ are the concentrations of electrons and holes, $\mu_n$...
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All closed orbits in semiclassical model
I'm studying from "Solid State Physics" by Ashcroft-Mermin. In particular, in chapter 12 it talks about the semiclassical model and tries to reason about the Hall effect in the limiting case ...
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Quantum Hall effect diverges at $B=0$
In the integer quantum Hall effect, with the applied magnetic field reduced, more and more LLs get filled and one can observe higher and higher plateaus in the Hall conductivity $\sigma_H(B)$. ...
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Hall effect source impedance
Background
I am an electrical engineer. My friend is a technician in a physics lab and he is using an electromagnetic flow meter (i.e. magmeter) which relies on the Hall effect to measure the flow ...
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Can one Short a Hall Bar?
Consider a classical Hall bar, no quantum effects. If a magnetic field is applied the standard undergraduate treatment tells us that the Lorentz Force will lead to a build up of excess charge on one ...
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Hall effect in a conducting ring
Consider a conducting ring moving through a uniform magnetic field of magnitude $B$, with speed $v$. To visualise, suppose the magnetic field is directed out of the page and the ring is moving ...
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Hall sensor for electric(!) field?
Is it (in principle) possible to measure the strength of an electic(!) field with a hall sensor?
I think so, for the following reasons:
The hall sensor is a conductor. If we place an conductor in an ...
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Why doesn't the classical model of electrical conduction work with iron, cadmium and bismuth?
My textbook says this:
In most metals, the charge carriers are electrons and the charge - carrier density determined from Hall - effect measurements is in good agreement with calculated values for ...
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Computing a second harmonic resistance out of a wave-like resistance signal
I want to reproduce the results of a paper, in which they measure the Anharmonic Hall Effect (AHE) resistance $R_{AHE}^{2\omega}$. There are several protocols for measuring it experimentally, but I'm ...
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Do I correctly understand the reason why the Hall resistivity in Quantum Hall Effect becomes larger as magnetic field increases?
I'm wondering whether I correctly understand the increase of the Hall resistivity rho_xy in Quantum Hall effect.
As you can see the graph,
As magnetic field becomes much larger, the quantization of ...
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How to make sense of the side jump mechanism for anomalous Hall effect?
According to this paper, https://doi.org/10.1103/PhysRevB.2.4559, the electron (wave packet), moving along $x$ axis, undergoes a transverse shift $Δy$ after collision with spin-orbit coupling center. ...
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Calibration of Hall Effect Measurement using Standard Reference Material (NIST)
I would like to calibrate a low-temperature Hall effect measurement using a Fe SRM.
Are there any standardized Hall measurements of SRM's available?
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How to understand the linear relation between Fermi level $E_F$ and the length $L$ of the slab in Hall effect and spin Hall effect?
I am following this paper to learn the physics of the spin Hall effect. Unlike the conventional Hall effect, the role of the external magnetic field $\vec{B}$ has been replaced by the effective ...
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