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Effect of the magnetic field on tunnel ionization of deep impurities by terahertz radiation

Danilov, Sergey ; Ganichev, Sergey ; Zimmermann, J. ; Prettl, Wilhelm


A suppression of tunnelling ionization of deep impurities in terahertz frequency electric fields by an external magnetic field is observed. It is shown that the ionization probability at external magnetic field, B, oriented perpendicular to the electric field of terahertz radiation, E, is substantially smaller than that at B ||E. The effect occurs at low temperatures and high magnetic fields ...


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