Результаты исследований: Научные публикации в периодических изданиях › статья в журнале по материалам конференции › Рецензирование
DYNAMICS OF ELECTRON-NUCLEAR SPIN SYSTEM IN GAAS:MN EPITAXIAL LAYERS. / Бердников, Владимир Сергеевич; Кузнецова, Мария Сергеевна; Кавокин, Кирилл Витальевич; Джиоев, Рослан.
в: Научно-технические ведомости СПбГПУ. Физико-математические науки, Том 17, № 1.1, 01.05.2024, стр. 31-35.Результаты исследований: Научные публикации в периодических изданиях › статья в журнале по материалам конференции › Рецензирование
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TY - JOUR
T1 - DYNAMICS OF ELECTRON-NUCLEAR SPIN SYSTEM IN GAAS:MN EPITAXIAL LAYERS
AU - Бердников, Владимир Сергеевич
AU - Кузнецова, Мария Сергеевна
AU - Кавокин, Кирилл Витальевич
AU - Джиоев, Рослан
PY - 2024/5/1
Y1 - 2024/5/1
N2 - In this paper we present experimental study of electron-nuclear spin dynamics in GaAs bulk layers doped with Mn ions at temperature 4.2 K. The electron spin dynamics is experimentally investigated by measuring the degree of polarization of photoluminescence in a transverse magnetic field (Hanle effect) and the recovery of the electron spin polarization in a longitudinal magnetic field (polarization recovery curve). To study nuclear spin dynamics, we use two-stage experimental protocol including optical cooling of nuclear spin system and measuring change of the polarisation degree of photoluminescence in different transverse magnetic fields. We show dependence of electron spin relaxation times on excitation power for three samples with different concentrations of shallow donors and acceptors. Electron spin relaxation times have been obtained as at the exciton transition as at the deep acceptor Mn transition. Also we show dependence of nuclear spin-lattice relaxation times T1 on value of external transverse magnetic field.
AB - In this paper we present experimental study of electron-nuclear spin dynamics in GaAs bulk layers doped with Mn ions at temperature 4.2 K. The electron spin dynamics is experimentally investigated by measuring the degree of polarization of photoluminescence in a transverse magnetic field (Hanle effect) and the recovery of the electron spin polarization in a longitudinal magnetic field (polarization recovery curve). To study nuclear spin dynamics, we use two-stage experimental protocol including optical cooling of nuclear spin system and measuring change of the polarisation degree of photoluminescence in different transverse magnetic fields. We show dependence of electron spin relaxation times on excitation power for three samples with different concentrations of shallow donors and acceptors. Electron spin relaxation times have been obtained as at the exciton transition as at the deep acceptor Mn transition. Also we show dependence of nuclear spin-lattice relaxation times T1 on value of external transverse magnetic field.
KW - Hanle effect
KW - gallium arsenide
KW - optical orientation
KW - polarization
KW - semiconductors
KW - spin
KW - spin dynamics
KW - spin relaxation
UR - https://www.mendeley.com/catalogue/3cdc02b4-01b0-3cbe-9795-ee98a4a29b55/
UR - https://www.mendeley.com/catalogue/3cdc02b4-01b0-3cbe-9795-ee98a4a29b55/
U2 - 10.18721/JPM.171.105
DO - 10.18721/JPM.171.105
M3 - Conference article
VL - 17
SP - 31
EP - 35
JO - НАУЧНО-ТЕХНИЧЕСКИЕ ВЕДОМОСТИ САНКТ-ПЕТЕРБУРГСКОГО ГОСУДАРСТВЕННОГО ПОЛИТЕХНИЧЕСКОГО УНИВЕРСИТЕТА. ФИЗИКО-МАТЕМАТИЧЕСКИЕ НАУКИ
JF - НАУЧНО-ТЕХНИЧЕСКИЕ ВЕДОМОСТИ САНКТ-ПЕТЕРБУРГСКОГО ГОСУДАРСТВЕННОГО ПОЛИТЕХНИЧЕСКОГО УНИВЕРСИТЕТА. ФИЗИКО-МАТЕМАТИЧЕСКИЕ НАУКИ
SN - 2304-9782
IS - 1.1
Y2 - 27 November 2023 through 1 December 2023
ER -
ID: 116418551