Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Spin dynamics of electrons and holes in p-doped InAs/GaAs quantum dots. / Braun, P. F.; Lombez, L.; Marie, X.; Urbaszek, B.; Amand, T.; Renucci, P.; Gauffier, J. L.; Kalevich, V. K.; Kavokin, K. V.; Krebs, O.; Voisin, P.
в: Brazilian Journal of Physics, Том 36, № 2 A, 01.01.2006, стр. 482-487.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Spin dynamics of electrons and holes in p-doped InAs/GaAs quantum dots
AU - Braun, P. F.
AU - Lombez, L.
AU - Marie, X.
AU - Urbaszek, B.
AU - Amand, T.
AU - Renucci, P.
AU - Gauffier, J. L.
AU - Kalevich, V. K.
AU - Kavokin, K. V.
AU - Krebs, O.
AU - Voisin, P.
PY - 2006/1/1
Y1 - 2006/1/1
N2 - We have investigated the electron and hole spin dynamics in p-doped semiconductor InAs/GaAs quantum dots by time resolved photoluminescence. We observe a decay of the average electron spin polarisation down to 1/3 of its initial value with a characteristic time of TΔ ≈ 500ps. We attribute this decay to the hyperfine interaction of the electron spin with randomly orientated nuclear spins. Magnetic field dependent studies reveal that this efficient spin relaxation mechanism can be suppressed by a field of the order of 100mT. In pump-probe like experiments we demonstrate that the resident hole spin, "written" with a first pulse, remains stable long enough to be "read" 15ns later with a second pulse.
AB - We have investigated the electron and hole spin dynamics in p-doped semiconductor InAs/GaAs quantum dots by time resolved photoluminescence. We observe a decay of the average electron spin polarisation down to 1/3 of its initial value with a characteristic time of TΔ ≈ 500ps. We attribute this decay to the hyperfine interaction of the electron spin with randomly orientated nuclear spins. Magnetic field dependent studies reveal that this efficient spin relaxation mechanism can be suppressed by a field of the order of 100mT. In pump-probe like experiments we demonstrate that the resident hole spin, "written" with a first pulse, remains stable long enough to be "read" 15ns later with a second pulse.
KW - InAs/GaAs quantum dots
KW - Spin dynamics
KW - Time resolved photoluminescence
UR - http://www.scopus.com/inward/record.url?scp=33746036860&partnerID=8YFLogxK
U2 - 10.1590/S0103-97332006000300067
DO - 10.1590/S0103-97332006000300067
M3 - Article
AN - SCOPUS:33746036860
VL - 36
SP - 482
EP - 487
JO - Brazilian Journal of Physics
JF - Brazilian Journal of Physics
SN - 0103-9733
IS - 2 A
ER -
ID: 39910297