Patent ID: 6987484

Claim:
A detector for electromagnetic radiation comprising: a semiconductor structure having a first charge carrier layer selected from the group consisting of a 2D charge carrier layer and a quasi 2D charge carrier layer wherein said charge carrier layer has an edge; at least a first contact and a second contact to said first charge carrier layer, said first contact and said second contact being provided at said edge and being spaced apart by a distance; a device for measuring at least one property selected from the group consisting of the photocurrent between said first and second contacts, the photovoltage between said first and second contacts and the resistance between said first and second contacts; a device for applying a magnetic field to said detector with a field component perpendicular to said first charge carrier layer, an output signal of said device for measuring providing information about at least one property selected from the group consisting of the presence of electromagnetic radiation, the intensity of the incident electromagnetic radiation and the frequency of the incident electromagnetic radiation.