標題: Level Broadening Effect in Electron Tunneling through Double Quantum Dots with Different g Factors
作者: Huang, Shiu-Ming
Tokura, Yasuhiro
Akimoto, Hikota
Kono, Kimitoshi
Lin, Juhn-Jong
Tarucha, Seigo
Ono, Keiji
電子物理學系
物理研究所
Department of Electrophysics
Institute of Physics
公開日期: 1-Apr-2011
摘要: The spin bottleneck effect was first observed in vertical double quantum dots with different g factors in high magnetic fields. We further investigate the spin-dependent resonance tunneling through the same quantum dot system in low magnetic fields. There are no resonance tunneling peak lines, even though one of the Zeeman levels is aligned, because the mismatch of the other Zeeman sublevels blocks the resonance tunneling. However, the level broadening effect partially releases the spin-dependent blockade. As a compromise between two effects, one resonance tunneling peak line splits into two peak lines and forms a kink structure. The split of the two current peak lines is half of Zeeman energy difference between two dots. (C) 2011 The Japan Society of Applied Physics
URI: http://dx.doi.org/10.1143/JJAP.50.04DJ02
http://hdl.handle.net/11536/9039
ISSN: 0021-4922
DOI: 10.1143/JJAP.50.04DJ02
期刊: JAPANESE JOURNAL OF APPLIED PHYSICS
Volume: 50
Issue: 4
結束頁: 
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