具有自旋轨道相互作用的一维相互作用导体中的自旋选择Peierls跃迁
Spin-selective Peierls transition in interacting one-dimensional conductors with spin-orbit interaction
摘要：
与Rashba自旋轨道耦合的相互作用的一维导体显示出自旋选择性Peierls型过渡到一个混合的自旋电荷密度波状态。过渡导致的间隙的一半的导电模式，这是强烈增强的电子-电子相互作用。另一半的模式保持在强重整化的无隙状态，并在相反的方向上进行相反的自旋，从而提供了一个完美的自旋过滤器。这种跃迁是由磁场和自旋-轨道相互作用驱动的。作为一个例子，我们表明，半导体量子线和碳纳米管的弱磁场或固有的自旋轨道相互作用诱导的间隙可以得到重整化的1个数量级高达10 - 30 K。
英文摘要：
Interacting one-dimensional conductors with Rashba spin-orbit coupling are shown to exhibit a spin-selective Peierls-type transition into a mixed spin-charge-density-wave state. The transition leads to a gap for one-half of the conducting modes, which is strongly enhanced by electron-electron interactions. The other half of the modes remains in a strongly renormalized gapless state and conducts opposite spins in opposite directions, thus providing a perfect spin filter. The transition is driven by magnetic field and by spin-orbit interactions. As an example we show for semiconducting quantum wires and carbon nanotubes that the gap induced by weak magnetic fields or intrinsic spin-orbit interactions can get renormalized by 1 order of magnitude up to 10 - 30 K.
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