Spin-lattice relaxation of optically polarized nuclei in p -type GaAs

M. Kotur, R. I. Dzhioev, R. V. Cherbunin, P. S. Sokolov, D. R. Yakovlev, M. Bayer, D. Suter, K. V. Kavokin, M. Vladimirova

Research output

1 Citation (Scopus)

Abstract

Spin-lattice relaxation of the nuclear spin system in p-type GaAs is studied using a three-stage experimental protocol including optical pumping and measuring the difference of the nuclear spin polarization before and after a dark interval of variable length. This method allows us to measure the spin-lattice relaxation time T1 of optically pumped nuclei "in the dark," that is, in the absence of illumination. The measured T1 values fall into the subsecond time range, being three orders of magnitude shorter than in earlier studied n-type GaAs. The drastic difference is further emphasized by magnetic-field and temperature dependencies of T1 in p-GaAs, showing no similarity to those in n-GaAs. This unexpected behavior finds its explanation in the spatial selectivity of the optical pumping in p-GaAs, that is only efficient in the vicinity of shallow donors, together with the quadrupole relaxation of nuclear spins, which is induced by electric fields within closely spaced donor-acceptor pairs. The developed theoretical model explains the whole set of experimental results.

Original languageEnglish
Article number165206
JournalPhysical Review B
Volume97
Issue number16
DOIs
Publication statusPublished - 24 Apr 2018

Fingerprint

Optical pumping
Spin-lattice relaxation
spin-lattice relaxation
nuclear spin
optical pumping
Spin polarization
nuclei
Relaxation time
Lighting
Electric fields
Magnetic fields
quadrupoles
selectivity
relaxation time
illumination
intervals
electric fields
polarization
magnetic fields
Temperature

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kotur, M., Dzhioev, R. I., Cherbunin, R. V., Sokolov, P. S., Yakovlev, D. R., Bayer, M., ... Vladimirova, M. (2018). Spin-lattice relaxation of optically polarized nuclei in p -type GaAs. Physical Review B, 97(16), [165206]. https://doi.org/10.1103/PhysRevB.97.165206
Kotur, M. ; Dzhioev, R. I. ; Cherbunin, R. V. ; Sokolov, P. S. ; Yakovlev, D. R. ; Bayer, M. ; Suter, D. ; Kavokin, K. V. ; Vladimirova, M. / Spin-lattice relaxation of optically polarized nuclei in p -type GaAs. In: Physical Review B. 2018 ; Vol. 97, No. 16.
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Kotur, M, Dzhioev, RI, Cherbunin, RV, Sokolov, PS, Yakovlev, DR, Bayer, M, Suter, D, Kavokin, KV & Vladimirova, M 2018, 'Spin-lattice relaxation of optically polarized nuclei in p -type GaAs', Physical Review B, vol. 97, no. 16, 165206. https://doi.org/10.1103/PhysRevB.97.165206

Spin-lattice relaxation of optically polarized nuclei in p -type GaAs. / Kotur, M.; Dzhioev, R. I.; Cherbunin, R. V.; Sokolov, P. S.; Yakovlev, D. R.; Bayer, M.; Suter, D.; Kavokin, K. V.; Vladimirova, M.

In: Physical Review B, Vol. 97, No. 16, 165206, 24.04.2018.

Research output

TY - JOUR

T1 - Spin-lattice relaxation of optically polarized nuclei in p -type GaAs

AU - Kotur, M.

AU - Dzhioev, R. I.

AU - Cherbunin, R. V.

AU - Sokolov, P. S.

AU - Yakovlev, D. R.

AU - Bayer, M.

AU - Suter, D.

AU - Kavokin, K. V.

AU - Vladimirova, M.

PY - 2018/4/24

Y1 - 2018/4/24

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