title: ÐÐ¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ°Ñ Ð¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸Ñ ÑÐ¿Ð¸Ð½Ð¾Ð² ÑÐ´ÐµÑ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¸ Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐ¼Ð¸ Ð½Ð¾ÑÐ¸ÑÐµÐ»ÑÐ¼Ð¸ Ð·Ð°ÑÑÐ´Ð° Ð² ÑÐ²ÐµÑÐ´Ð¾Ð¼ ÑÐ°ÑÑÐ²Ð¾ÑÐµ AlGaAs
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Dynamic polarization of nuclear spins by optically oriented charge carriers in solid solution AlGaAs
Creators: name: ÐÐ°Ð²ÑÐ´Ð¾Ð², ÐÐ°ÐºÑÐ¸Ð¼
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾ÐµÂ Ð¾Ñ Ð»Ð°Ð¶Ð´ÐµÐ½Ð¸Ðµ ÑÐ´ÐµÑÐ½Ð¾Ð¹ ÑÐ¿Ð¸Ð½Ð¾Ð²Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ð² Ð¿Ð¾Ð»Ðµ ÐÐ°Ð¹ÑÐ°
ÑÐ´ÐµÑÐ½Ð°Ñ ÑÐ¿Ð¸Ð½Ð¾Ð²Ð°Ñ ÑÐ¸ÑÑÐµÐ¼Ð°
ÑÐ¿Ð¸Ð½Ð¾Ð²Ð°Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ°
Ð¿Ð¾Ð»Ðµ ÐÐ°Ð¹ÑÐ°
ÑÑÑÐµÐºÑ Ð¥Ð°Ð½Ð»Ðµ
Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¾ÑÐ¸ÐµÐ½ÑÐ°ÑÐ¸Ñ
optical cooling of nuclear spin system in Knight field
nuclear spin system
spin temperature
Knight field
Hanle effect
optical orientation

description: ÐÐ±ÑÐµÐºÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ â Ð¾Ð±ÑÐ°Ð·ÐµÑ -0,290,71. Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ â Ð¾Ð±Ð½Ð°ÑÑÐ¶Ð¸ÑÑ Ð¸ Ð¸Ð·ÑÑÐ¸ÑÑ ÑÐ²Ð»ÐµÐ½Ð¸Ðµ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¾ÑÐ»Ð°Ð¶Ð´ÐµÐ½Ð¸Ñ ÑÐ´ÐµÑÐ½Ð¾Ð¹ ÑÐ¿Ð¸Ð½Ð¾Ð²Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ð² Ð¿Ð¾Ð»Ðµ ÐÐ°Ð¹ÑÐ° Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ Ð´ÐµÐ¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸Ð¸ ÑÐ¾ÑÐ¾Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ¸Ð¸ Ð² Ð¿Ð¾Ð¿ÐµÑÐµÑÐ½Ð¾Ð¼ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð¼ Ð¿Ð¾Ð»Ðµ Ð¿ÑÐ¸ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐµ 77 Ð. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ¿ÐµÐºÑÑÐ¾Ð² ÑÐ¾ÑÐ¾Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ¸Ð¸ (Ð¤Ð) â 0,290,71 (Ð¾Ð±Ð¾Ð·Ð½Ð°ÑÐµÐ½Ð¸Ðµ Ð¾Ð±ÑÐ°Ð·ÑÐ° Ð¢ - 760) Ð¿ÑÐ¸ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ°Ñ 300 Ð Ð¸ 77 Ð. Ð­ÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½Ð¾ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð° Ð¾ÑÐ½Ð¾ÑÐ¸ÑÐµÐ»ÑÐ½Ð°Ñ ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸Ñ Ð°Ð»ÑÐ¼Ð¸Ð½Ð¸Ñ Ð² Ð¾Ð±ÑÐ°Ð·ÑÐµ â 0,29. ÐÐ±Ð½Ð°ÑÑÐ¶ÐµÐ½Ð° Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð° Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÑ ÑÑÐµÐ¿ÐµÐ½Ð¸ ÑÐ¸ÑÐºÑÐ»ÑÑÐ½Ð¾Ð¹ Ð¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸Ð¸ Ð¤Ð Ð¾Ñ Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÐ½Ð¾Ð¹ Ð¿Ð»Ð¾ÑÐ½Ð¾ÑÑÐ¸ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸ Ð½Ð°ÐºÐ°ÑÐºÐ¸. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ âÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð¹â Ð¸ âÑÐ´ÐµÑÐ½Ð¾Ð¹â ÐºÑÐ¸Ð²ÑÑ Ð´ÐµÐ¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸Ð¸ ÑÐ¾ÑÐ¾Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ¸Ð¸ Ð² Ð¿Ð¾Ð¿ÐµÑÐµÑÐ½Ð¾Ð¼ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð¼ Ð¿Ð¾Ð»Ðµ (ÐºÑÐ¸Ð²ÑÑ Ð¥Ð°Ð½Ð»Ðµ). ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¾ÑÐ»Ð°Ð¶Ð´ÐµÐ½Ð¸Ñ ÑÐ´ÐµÑÐ½Ð¾Ð¹ ÑÐ¿Ð¸Ð½Ð¾Ð²Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ð² Ð¿Ð¾Ð»Ðµ ÐÐ°Ð¹ÑÐ° Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ Ð´ÐµÐ¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸Ð¸ Ð¤Ð Ð² Ð¿Ð¾Ð¿ÐµÑÐµÑÐ½Ð¾Ð¼ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð¼ Ð¿Ð¾Ð»Ðµ. ÐÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÐµ ÑÑÐµÐ´ÑÑÐ²Ð° Microsoft Excel Ð´Ð»Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÑ Ð´Ð°Ð½Ð½ÑÑ. Ð ÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÑ Ð´Ð°Ð½Ð½ÑÑ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð¼ÑÐ»ÑÑÐ¸Ð¼ÐµÐ´Ð¸Ð¹Ð½ÑÑ ÑÑÐµÐ´ÑÑÐ² MagicPlot. ÐÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð° Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð² Ð² ÑÐ°Ð¼ÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸, Ð½Ðµ ÑÑÐ¸ÑÑÐ²Ð°ÑÑÐµÐ¹ ÑÑÑÐµÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ°Ð²Ð½Ð¾Ð²ÐµÑÐ½Ð¾Ð¹ ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸Ð¸ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð¾Ð². ÐÐ¾Ð»ÑÑÐµÐ½Ð° Ð¾ÑÐµÐ½ÐºÐ° ÑÐ´ÐµÑÐ½Ð¾Ð¹ ÑÐ¿Ð¸Ð½Ð¾Ð²Ð¾Ð¹ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ = â 33 Â± 18 Ð¼ÐºÐ, Ð¿Ð¾Ð»ÑÑÐµÐ½Ð° Ð¾ÑÐµÐ½ÐºÐ° Ð¿Ð¾Ð»Ñ ÐÐ°Ð¹ÑÐ° = â4,2 Â± 0,7 ÐÑ.
description: Object of research â sample â 0.290.71. The purpose of the work is to find and research the phenomenon of optical cooling of a nuclear spin system in a Knight field using the method of photoluminescence depolarization in a transverse magnetic field at 77 K. Photoluminescence study of the â 0,290,71 at 300 K and 77 K was conducted. Relative concentration of Aluminum was found. The dependence of the degree of circular polarization of the photoluminescence on the surface pump power density was studied. Studies of the âelectronicâ and ânuclearâ Studies of photoluminescence depolarization in transverse magnetic field (Hanle curves) have been carried out. A study of optical cooling of a nuclear spin system in a Knight field was carried out using the method of photoluminescence depolarization in a transverse magnetic field. Microsoft Excel software was used to process experimental data. The results of experimental data processing are presented using MagicPlot multimedia tools. The results were processed within the framework of a model that does not take into account the existence of an equilibrium electron concentration. An estimate of the nuclear spin temperature = â33 Â± 18 K was obtained, and an estimate of the Knight field = â 4,2 Â± 0,7 G was obtained.