標題: Diamagnetic Response of Exciton Complexes in Semiconductor Quantum Dots
作者: Tsai, Ming-Fu
Lin, Hsuan
Lin, Chia-Hsien
Lin, Sheng-Di
Wang, Sheng-Yun
Lo, Ming-Cheng
Cheng, Shun-Jen
Lee, Ming-Chih
Chang, Wen-Hao
電子物理學系
電子工程學系及電子研究所
Department of Electrophysics
Department of Electronics Engineering and Institute of Electronics
公開日期: 31-Dec-2008
摘要: We report measurements of diamagnetic shifts for different exciton complexes confined in small InAs quantum dots. The measured diamagnetic responses are sensitive to the number of carriers in the exciton complexes, with systematic differences between neutral excitons, biexcitons, and trions. Theoretical calculations suggest that such systematic differences arise from very different extents of electron and hole wave functions confined in small quantum dots. The measured magnetic response of Coulomb energies is found to vary with the cube of the wave function extent, and can be a sensitive probe to the electron-hole wave function asymmetry.
URI: http://dx.doi.org/10.1103/PhysRevLett.101.267402
http://hdl.handle.net/11536/8010
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.101.267402
期刊: PHYSICAL REVIEW LETTERS
Volume: 101
Issue: 26
起始頁: 0
結束頁: 0
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