El efecto Hall debe utilizarse para calcular el signo de los...

El efecto Hall debe utilizarse para calcular el signo de los portadores de carga en una muestra de semiconductor. La sonda se coloca entre los polos de un imán para que el campo magnético apunte hacia arriba. Se hace pasar una corriente a través de una muestra rectangular colocada horizontalmente. $\mathrm{Al}$ pasar la corriente a través de la muestra en dirección este, la cara norte de esta se encuentra a un potencial más alto que la cara sur. Decida si la densidad numérica de portadores de carga está cargada positiva o negativamente.

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Charge Carriers in Semiconductors

In semiconductors, charge carriers can either be electrons (negatively charged) or holes (positively charged). Determining the sign of these carriers is crucial for understanding the conductivity and behavior of semiconductor materials and devices, a process in which the Hall effect is commonly used.

Hall Effect

The Hall effect is a phenomenon in which a voltage difference (Hall voltage) develops across a current-carrying conductor or semiconductor when it is placed in a perpendicular magnetic field. This effect is utilized to determine the nature (positive or negative) and density of the charge carriers within the material.

Lorentz Force

The Lorentz force is the force exerted on charged particles when they move through electric and magnetic fields. In the context of the Hall effect, this force causes the deflection of charge carriers, leading to an accumulation of charge on one side of the sample, which is then detected as a transverse voltage.

Transcript

Please give Ace some feedback