P. G. Baranov, N. G. Romanov, D. O. Tolmachev, C. de Mello Donegá, A. Meijerink, S. B. Orlinskii, J. Shmidt, “Giant change in the intensity of tunneling afterglow in excited ZnO quantum dots induced by the spin reorientation of electron-hole pairs in static and microwave magnetic fields”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2006, Volume 84, Issue 7,Pages <nobr>475

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CONDENSED MATTER

Giant change in the intensity of tunneling afterglow in excited ZnO quantum dots induced by the spin reorientation of electron-hole pairs in static and microwave magnetic fields

P. G. Baranov^a, N. G. Romanov^a, D. O. Tolmachev^a, C. de Mello Donegá^b, A. Meijerink^b, S. B. Orlinskii^c, J. Shmidt^c

^a Ioffe Physico-Technical Institute, Russian Academy of Sciences
^b Debye Institute, Utrecht University, Utrecht, The Netherlands
^c Huygens Laboratory, Department of Physics, Leiden University, Leiden, The Netherlands

Abstract: Long afterglow has been detected in light-excited ZnO quantum dots caused by the spin-dependent tunneling recombination of electron and hole centers. A giant increase in the intensity of afterglow upon a change in the spin orientation of electron and hole centers has been observed under electron paramagnetic resonance conditions, which allowed these centers to be identified.

PACS: 76.30.Fc, 77.84.Dy

Received: 28.08.2006