TY - JOUR

T1 - Effect of illumination on positive magnetoresistance of high-mobility two-dimensional electron gas in GaAs/AlAs heterostructure

AU - Бетке, Игорь Андреевич

AU - Стрыгин, Иван Сергеевич

AU - Колосовский, Е.А.

AU - Быков, Алексей Александрович

N1 - The research was carried out within the framework of the state assignment of the A. V. Rzhanov Institute of Semiconductor Physics SB RAS.

PY - 2025/5

Y1 - 2025/5

N2 - In this paper, we study the effect of red LED illumination on the positive magnetoresistance of a high-mobility two-dimensional electron gas in a selectively doped GaAs/AlAs heterostructure at a temperature T = 4.2 K in magnetic fields B < 1 T. We observe a significant increase in the positive magnetoresistance as a result of illumination. It is shown that illumination-induced increase in the positive magnetoresistance in the two-dimensional electron system under study is due to an increase in the quantum lifetime.

AB - In this paper, we study the effect of red LED illumination on the positive magnetoresistance of a high-mobility two-dimensional electron gas in a selectively doped GaAs/AlAs heterostructure at a temperature T = 4.2 K in magnetic fields B < 1 T. We observe a significant increase in the positive magnetoresistance as a result of illumination. It is shown that illumination-induced increase in the positive magnetoresistance in the two-dimensional electron system under study is due to an increase in the quantum lifetime.

UR - https://physmath.spbstu.ru/en/article/2025.79.11/

U2 - 10.18721/JPM.181.111

DO - 10.18721/JPM.181.111

M3 - Article

VL - 18

SP - 159

JO - Научно-технические ведомости СПбГПУ. Физико-математические науки Cанкт-Петербургский политехнический университет Петра Великого ru

JF - Научно-технические ведомости СПбГПУ. Физико-математические науки Cанкт-Петербургский политехнический университет Петра Великого ru

SN - 2304-9782

IS - 1.1

ER -