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cond-mat2003★ 1 cited
Magnetic field effect on tunnel ionization of deep impurities by terahertz radiation
S. D. Ganichev, S. N. Danilov, M. Sollinger +6
A suppression of tunnelling ionization of deep impurities in terahertz frequency electric fields by a magnetic field is observed. It is shown that the ionization probability at ext…
cond-mat2000★ 6 cited
Giant negative magnetoresistance in semiconductors doped by multiply charged deep impurities
S. D. Ganichev, H. Ketterl, W. Prettl +4
A giant negative magnetoresistance has been observed in bulk germanium doped with multiply charged deep impurities. Applying a magnetic field the resistance may decrease exponentia…