Photon-assisted electronic and spin transport through two T-shaped three-quantum-dot molecules embedded in an Aharonov-Bohm interferometer

• 来源期刊: 中国物理B（英文版）
• 关键词: non-equilibrium Green's function photon-assisted electron transport Aharonov-Bohm interferometer Rashba spin-orbit coupling
• 年，卷（期）: 2017,（11）
• 页码范围: 460-468
• 页数: 9页
• 语种: 英文
• DOI: 10.1088/1674-1056/26/11/117302

摘要

We investigate the time-modulated electronic and spin transport properties through two T-shaped three-quantum-dot molecules embedded in an Aharonov-Bohm (A-B) interferometer.By using the Keldysh non-equilibrium Green's function technique,the photon-assisted spin-dependent average current is analyzed.The T-shaped three-quantum-dot molecule A-B interferometer exhibits excellent controllability in the average current resonance spectra by adjusting the interdot coupling strength,Rashba spin-orbit coupling strength,magnetic flux,and amplitude of the time-dependent external field.Efficient spin filtering and multiple electron-photon pump functions are exploited in the multi-quantum-dot molecule A-B interferometer by a time-modulated external field.