Hall effect sign anomaly

The Hall effect remains a puzzle. The theoretical explanation of the sign anomaly depends on the relative phases of the wavefunctions on adjacent sites. The phases are only correlated if the electron moves from one silicon atom to its nearest neighbor. However, the mobility edge in a-Si H is far from the... 

Hall effect is another important transport phenomenon and has been extensively studied in amorphous semiconductors. The Hall effect studies also assumed importance because of an anomaly observed between the sign of the charge carriers indicated by Hall coefficient and S in amorphous semiconductors. The Hall coefficient Rh is given by. 

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