磁掺杂一维导线中的输运：在没有整体螺旋度的情况下，螺旋保护能出现吗？
Transport in Magnetically Doped One-Dimensional Wires: Can the Helical Protection Emerge without the Global Helicity?
摘要：
我们研究了磁性吸附原子功能化的任意掺杂量子线的相图和输运性质。这些系统的理论模型是一个稠密的一维近藤晶格（KL），它由巡回电子与局域量子磁矩相互作用。我们发现了新的相位的局部螺旋金属的运输是保护从材料缺陷的破坏性影响。巧合的是，这样的保护出现，而不需要整体螺旋度，这是固有的在所有以前研究的螺旋系统，并需要打破自旋旋转对称性。我们解释这种保护的新类型的物理，找到条件下，它出现，并讨论可能的实验测试。我们的结果为直接实现各种材料量子线中的受保护弹道输运铺平了道路。
英文摘要：
We study the phase diagram and transport properties of arbitrarily doped quantum wires functionalized by magnetic adatoms. The appropriate theoretical model for these systems is a dense one-dimensional Kondo Lattice (KL) which consists of itinerant electrons interacting with localized quantum magnetic moments. We discover the novel phase of the locally helical metal where transport is protected from a destructive influence of material imperfections. Paradoxically, such a protection emerges without a need of the global helicity, which is inherent in all previously studied helical systems and requires breaking the spin-rotation symmetry. We explain the physics of this protection of the new type, find conditions, under which it emerges, and discuss possible experimental tests. Our results pave the way to the straightforward realization of the protected ballistic transport in quantum wires made of various materials.
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