Spin-dependent quantum transport through an Aharonov-Bohm structure spin splitter

• 来源期刊: 中国物理B(英文版)
• 关键词: Aharonov-Bohm interferometer magnetic field spin splitter
• 年，卷（期）: 2008,（8）
• 页码范围: 3058-3061
• 页数: 4页
• 语种: 英文

摘要

Using the tight-binding model approximation, this paper investigates theoretically spin-dependent quantum trans-port through an Aharonov-Bohm (AB) interferometer. An external magnetic field is applied to produce the spin-polarization and spin current. The AB interferometer, acting as a spin splitter, separates the opposite spin polarization current. By adjusting the energy and the direction of the magnetic field, large spin-polarized current can be obtained.