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Size matters in the giant magnetoresistance effect in semiconductors
Date:10/19/2013

no influence on measured properties because the electrons lose memory of one edge or wall by the time they get to another.

The strong sensitivity of the magnetoresistance to the size of the device observed in this research indicates that scattering with the walls of the device might be making a substantial contribution to electron scattering. This result testifies to the high quality of the semiconductor used in this research, produced by Prof. Werner Wegscheider at ETH-Zurich in Switzerland.

This research team developed a model to understand the observations and deduced that when the semiconductor system becomes of even better quality, the change in the resistance under the application of a magnetic field will become even bigger. Indeed, the change might become so big that the resistance vanishes entirely in the small magnetic field.


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Contact: LaTina Emerson
lemerson1@gsu.edu
404-413-1353
Georgia State University
Source:Eurekalert

Page: 1 2

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