title: Spin-dependent quantum interference in Aharonov-Bohm ring embedded with two double-quantum-dot molecules.
abstract: The spin polarized transport properties through an Aharonov-Bohm ring embedded with a double quantum dot-molecule in each arm with Rashba spin-orbit (RSO) interaction is theoretically studied in the framework of the equation of motion of Green's function. Based on molecular state representation, the anti-resonance phenomenon in the conductance spectrum is readily explained. We found that the position of antiresonant peaks in conductance spectrum is determined by the interdot coupling strengths. Moreover, the magnitude of conductance of each spin component can be manipulated by the Rashba spin orbit interaction strength. Especially only one spin component electron can be allowed to transport through this structure by modulating the strength of RSO interaction properly.
authors.forename: Xiaofei
authors.initials: X
authors.lastname: Wang
authors.forename: Xiaojie
authors.initials: X
authors.lastname: Liu
authors.forename: Xueyang
authors.initials: X
authors.lastname: Zhao
authors.forename: Haitao
authors.initials: H
authors.lastname: Yin
authors.forename: Weilong
authors.initials: W
authors.lastname: Wan
authors.forename: Li
authors.initials: L
authors.lastname: Feng