Keywords: Electrically detected magnetic resonance.svg en A band structure energy level outline of the EDMR mechanism A donor impurity P such as a phosphorus atom sits just below the conduction band The electron's blue circle spin small arrow anti-aligns with the magnetic field B A recombination centre R sits between the donor and the valence band and provides a recombination pathway for the donor While the P and R electron spins are aligned the Pauli exclusion principle prevents the second electron from decaying from P to R and the recombination pathway is blocked A microwave photon γ can flip spins and allow recombination own Jnnnnn 2010-04-17 Public Domain Semiconductor energy diagrams |