Spin-polarized transport through a double Aharonov-Bohm ring in the presence of magnetic impurity

• 来源期刊: 中国物理（英文版）
• 关键词: spin-polarized transport Aharonov-Bohm ring magnetic impurity atom
• 年，卷（期）: 2005,（1）
• 页码范围: 196-200
• 页数: 5页
• 语种: 英文

摘要

The Aharonov-Bohm (AB) interference oscillations manifested through transmission of an electron in a mesoscopic device with a double-ring in the presence of a magnetic impurity serving as the spin-flipper are studied. The spin-flipper is demonstrated to indeed cause the partial decoherence of the AB interference. Moreover, it is found that the spinup/down transmission coefficients are asymmetric in the flux reversal while the reflection coefficients as well as that the total transmission coefficient are symmetric.