title: Ð¡Ð¿Ð¸Ð½Ð¾Ð²ÑÐ¹ ÑÑÑÐµÐºÑ ÐÐµÑÑÐ° Ð² ÐºÐ²Ð°Ð½ÑÐ¾Ð²Ð¾Ð¹ ÑÐ¼Ðµ CdMnTe, ÑÑÐ½Ð½ÐµÐ»ÑÐ½Ð¾-ÑÐ²ÑÐ·Ð°Ð½Ð½Ð¾Ð¹ Ñ ÐºÐ²Ð°Ð½ÑÐ¾Ð²Ð¾Ð¹ ÑÐ¼Ð¾Ð¹ CdTe
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: Spin Kerr effect in CdMnTe quantum well tunnel-coupled with the CdTe quantum well
Creators: name: ÐÐµÐ³Ð¾ÐµÐ², 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: 2022
Subjects: ÐÐµÑÑÐ° ÑÑÑÐµÐºÑ
Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¾ÑÐ¸ÐµÐ½ÑÐ°ÑÐ¸Ñ
ÑÐ¿Ð¸Ð½Ð¾Ð²Ð°Ñ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÐ°
Ð½Ð°ÐºÐ°ÑÐºÐ°-Ð·Ð¾Ð½Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
optical orientation
spin dynamics
pump-probing

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð»Ð°ÑÑ ÐºÐ¾Ð³ÐµÑÐµÐ½ÑÐ½Ð°Ñ ÑÐ¿Ð¸Ð½Ð¾Ð²Ð°Ñ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÐ° Ð² Ð´Ð²ÑÑ ÑÑÐ½Ð½ÐµÐ»ÑÐ½Ð¾-ÑÐ²ÑÐ·Ð°Ð½Ð½ÑÑ ÐºÐ²Ð°Ð½ÑÐ¾Ð²ÑÑ ÑÐ¼Ð°Ñ CdMnTe/CdMgTe (ÑÐ·ÐºÐ°Ñ) Ð¸ CdTe/CdMgTe (ÑÐ¸ÑÐ¾ÐºÐ°Ñ). ÐÐ·Ð¼ÐµÑÑÐµÐ¼ÑÐ¹ Ð¾Ð±ÑÐ°Ð·ÐµÑ Ð½Ð°ÑÐ¾Ð´Ð¸Ð»ÑÑ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð¼ Ð¿Ð¾Ð»Ðµ, Ð¿ÐµÑÐ¿ÐµÐ½Ð´Ð¸ÐºÑÐ»ÑÑÐ½Ð¾Ð¼ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð²Ð¾Ð·Ð±ÑÐ¶Ð´Ð°ÑÑÐµÐ³Ð¾ Ð»ÑÑÐ° (Ð³ÐµÐ¾Ð¼ÐµÑÑÐ¸Ñ Ð¤Ð¾Ð¹Ð³ÑÐ°). Ð¡Ð¿Ð¸Ð½Ð¾Ð²Ð°Ñ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÐ° ÑÐµÐ³Ð¸ÑÑÑÐ¸ÑÑÐµÑÑÑ Ñ Ð¿Ð¸ÐºÐ¾ÑÐµÐºÑÐ½Ð´Ð½ÑÐ¼ ÑÐ°Ð·ÑÐµÑÐµÐ½Ð¸ÐµÐ¼ Ð² ÑÐµÐ¶Ð¸Ð¼Ðµ Ð½Ð°ÐºÐ°ÑÐºÐ°-Ð·Ð¾Ð½Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÑÐ¿Ð¸Ð½Ð¾Ð²Ð¾Ð³Ð¾ ÑÑÑÐµÐºÑÐ° ÐÐµÑÑÐ°, ÑÐ¾ÑÑÐ¾ÑÑÐµÐ³Ð¾ Ð² Ð¿Ð¾Ð²Ð¾ÑÐ¾ÑÐµ Ð¿Ð»Ð¾ÑÐºÐ¾ÑÑÐ¸ Ð»Ð¸Ð½ÐµÐ¹Ð½Ð¾Ð¹ Ð¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸Ð¸ Ð·Ð¾Ð½Ð´Ð¸ÑÑÑÑÐµÐ³Ð¾ Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ° Ð¿ÑÐ¸ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¾ÑÐ¸ÐµÐ½ÑÐ°ÑÐ¸Ð¸ ÑÐ¿Ð¸Ð½Ð¾Ð² ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð¾Ð² Ð² Ð¾Ð±ÑÐ°Ð·ÑÐµ. ÐÐ»Ñ Ð²Ð¾Ð·Ð±ÑÐ¶Ð´ÐµÐ½Ð¸Ñ ÑÐ¿Ð¸Ð½Ð¾Ð² Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÑÑÑ ÑÐ¸ÑÐ°Ð½-ÑÐ°Ð¿ÑÐ¸ÑÐ¾Ð²ÑÐ¹ (Ti:Sa) Ð»Ð°Ð·ÐµÑ Ñ Ð¿ÐµÑÐµÑÑÑÐ°Ð¸Ð²Ð°ÐµÐ¼Ð¾Ð¹ Ð´Ð»Ð¸Ð½Ð½Ð¾Ð¹ Ð²Ð¾Ð»Ð½Ñ Ð¸ Ð´Ð»Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÑÑ Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ¾Ð² 1.5 Ð¿Ñ, ÑÐ»ÐµÐ´ÑÑÑÐ¸Ñ Ñ ÑÐ°ÑÑÐ¾ÑÐ¾Ð¹ 80 ÐÐÑ. Ð ÑÐ¾Ð´Ðµ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ð¹ ÐºÐµÑÑÐ¾Ð²ÑÐºÐ¸Ñ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð², Ð·Ð°ÑÐµÐ³Ð¸ÑÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð° Ð±ÑÑÑÑÐ¾Ð·Ð°ÑÑÑÐ°ÑÑÐ°Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½ÑÐ° ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð¸Ð· ÑÐ·ÐºÐ¾Ð¹ ÐºÐ²Ð°Ð½ÑÐ¾Ð²Ð¾Ð¹ ÑÐ¼Ñ Ñ g â ÑÐ°ÐºÑÐ¾ÑÐ¾Ð¼, ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÑÑÐ¸Ð¼ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ñ, ÑÐ¾ÑÑ Ð²ÑÐµ Ð½Ð¾ÑÐ¸ÑÐµÐ»Ð¸ Ð¸Ð· Ð½ÐµÐµ Ð±ÑÑÑÑÐ¾ ÑÑÐ½Ð½ÐµÐ»Ð¸ÑÑÑÑ Ð² ÑÐ¸ÑÐ¾ÐºÑÑ ÐºÐ²Ð°Ð½ÑÐ¾Ð²ÑÑ ÑÐ¼Ñ ÑÐµÑÐµÐ· ÑÑÐ½Ð½ÐµÐ»ÑÐ½Ð¾-Ð¿ÑÐ¾Ð·ÑÐ°ÑÐ½ÑÐ¹ Ð±Ð°ÑÑÐµÑ. ÐÐ½Ð°Ð»Ð¸Ð· Ð´Ð°Ð½Ð½ÑÑ Ð¿Ð¾ÐºÐ°Ð·ÑÐ²Ð°ÐµÑ, ÑÑÐ¾ Ð½Ð°Ð±Ð»ÑÐ´Ð°ÐµÐ¼ÑÐ¹ Ð² ÑÐ·ÐºÐ¾Ð¹ ÐºÐ²Ð°Ð½ÑÐ¾Ð²Ð¾Ð¹ ÑÐ¼Ðµ ÐºÐµÑÑÐ¾Ð²ÑÐºÐ¸Ð¹ ÑÐ¸Ð³Ð½Ð°Ð» Ð¾Ð±ÑÑÐ»Ð¾Ð²Ð»ÐµÐ½ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð¼ Ð¸Ð· ÑÐ¸ÑÐ¾ÐºÐ¾Ð¹ ÐºÐ²Ð°Ð½ÑÐ¾Ð²Ð¾Ð¹ ÑÐ¼Ñ Ð¸ Ð¸Ð½Ð´ÑÑÐ¸ÑÐ¾Ð²Ð°Ð½ Ð¾Ð±Ð¼ÐµÐ½Ð½ÑÐ¼ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸ÐµÐ¼.
description: The work is devoted to the study the coherent spin dynamics in two tunnel coupled CdMnTe/CdMgTe (narrow) and CdTe/CdMgTe (wide) quantum wells. The measured sample was in a magnetic field perpendicular to the direction of the excitation beam (Voigt geometry). Spin dynamics was measured with picosecond resolution in pump-probe mode using the Kerr spin effect, which consists in the rotation of the plane of linear polarization of the probing pulse during the optical orientation of electron spins in the sample. A titanium sapphire (Ti:Sa) laser with tunable wavelength and 1.5 ps pulse duration following at 80 MHz is used to excite the spins. During measurements of the Kerr signals, a rapidly decaying component of the signal from a narrow quantum well with a g-factor corresponding to the electron is registered, although all carriers from it rapidly tunnel into a wide quantum well through the tunnel-transparent barrier. Analysis of the data shows that the Kerr signal observed in the narrow quantum well is due to the signal from the wide quantum well and is induced by the exchange interaction.