Microstructure of A1/GaAs Interface Studied by Slow Positron Beam

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WENG Hu-Min, ZHOU Xian-Yi, XU Ji-Hua, SUN Shi-Jun, ZHU Jing-Sheng, WU Shu-Lan and HAN Rong-Dian. Microstructure of A1/GaAs Interface Studied by Slow Positron Beam[J]. Chinese Physics C, 1993, 17(9): 775-783.
WENG Hu-Min, ZHOU Xian-Yi, XU Ji-Hua, SUN Shi-Jun, ZHU Jing-Sheng, WU Shu-Lan and HAN Rong-Dian. Microstructure of A1/GaAs Interface Studied by Slow Positron Beam[J]. Chinese Physics C, 1993, 17(9): 775-783. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Microstructure of A1/GaAs Interface Studied by Slow Positron Beam

    Corresponding author: WENG Hu-Min,
  • Department of Modern Physics,University of Science and Technology of China,Hefei 2300262 Structure Research Laboratory,University of Science and Technology of China,Academia Sinica Hefei 2300263 International Center for Materials Physics,Academia Sinica Shenyang 110015

Abstract: A series of interface models were founded,and the expressions of relation between Doppler Broadening S-parameter and implanted energy of positrons were obtained from the diffusion equation of positrons.Interfaces formed between Al and (110) surfaces of GaAs were studied with Slow Positron Beam.The system of A1/GaAs interfaces could be illustrated by perfectly absorbing linear interface model.From the results fitted by the model,the relation between the S-parameter of interfaces and the annealing temperatures or the thickness of films was derivtd and the microstructure of interfaces and its dynamical characters discussed.

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