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中文摘要：
单个粒子的顺序的通道通过 negative-U 中心 hybridized 被学习与一超导，一铁磁性，并且正常金属电极。在到积极 U 的盒子的鲜明对比，在吸引人的收费能量的单个粒子的通道通常在对与电子由地面状态被禁止。我们发现显微镜的机制导致单个粒子从对状态使饱享。作为后果，在非极化的金属终端，没有费用电流的显著纯旋转电流在大量 gate-voltages, 和偏爱电压上幸存，它为 spintronic 设备的试验性的观察和设计是相当关键的。另外，重要纺纱过滤器效果在某些偏爱政体被介绍。
英文摘要：
Single-particle sequential tunneling is studied through a negative-U center hybridized with a superconducting, a ferromagnetic, and a normal metal electrodes. In stark contrast to the case of positive U, the single-particle tunneling in attractive charging energy is usually prohibited by ground states with electrons in pairs. We find a microscopic mechanism to induce single-particle sates from pair states. As a consequence, in the nonpolarized metal terminal a remarkable pure spin current with no charge currents survives over a wide range of gate- and bias- voltages, which is rather crucial for experimental observation and design of spintronic devices. In addition, a significant spin-filter effect is presented in certain bias regime.
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