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Article Dans Une Revue Physical Review B Année : 2016

Nuclear spin warm up in bulk n-GaAs

M. Kotur
  • Fonction : Auteur
R. I. Dzhioev
  • Fonction : Auteur
Benoit Jouault
V. L. Korenev
  • Fonction : Auteur
K. V. Kavokin
  • Fonction : Auteur

Résumé

We show that the spin-lattice relaxation in n-type insulating GaAs is dramatically accelerated at low magnetic fields. The origin of this effect, which cannot be explained in terms of well-known diffusion-limited hyperfine relaxation, is found in the quadrupole relaxation, induced by fluctuating donor charges. Therefore, quadrupole relaxation, which governs low field nuclear spin relaxation in semiconductor quantum dots, but was so far supposed to be harmless to bulk nuclei spins in the absence of optical pumping, can be studied and harnessed in the much simpler model environment of n-GaAs bulk crystal.
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Dates et versions

hal-01393714 , version 1 (08-11-2016)

Identifiants

Citer

M. Kotur, R. I. Dzhioev, Maria Vladimirova, Benoit Jouault, V. L. Korenev, et al.. Nuclear spin warm up in bulk n-GaAs. Physical Review B, 2016, 94 (8), pp.081201. ⟨10.1103/PhysRevB.94.081201⟩. ⟨hal-01393714⟩
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