论文标题
通过自旋波动诱导的Luttinger液体中的主要超导相关性
Dominant superconducting correlations in a Luttinger liquid induced by spin fluctuations
论文作者
论文摘要
我们研究了与自旋链偶联的Luttinger液体接近度中的自旋 - 透射介导的发散超导波动。我们的研究提供了有关自旋波动如何仅与排斥电子相互作用的密切相关的非Fermi液体中的超导性的见解。系统中的电子受扩展的哈伯族哈密顿式的约束，并耦合到由旋转模型的局部旋转链-U \ frac {1} {2} {2} $ $ xx $ xx $ hamiltonian。使用多通道Luttinger液体方法，我们确定金属链的相图。我们发现，对于足够大的链链耦合而言，自旋极化三重导向相关性持续存在排斥性电子相互作用。
We study spin-fluctuation mediated divergent superconducting fluctuations in a Luttinger liquid proximity-coupled to a spin chain. Our study provides insight into how spin fluctuations can induce superconductivity in a strongly correlated non-Fermi liquid with repulsive electronic interactions only. The electrons in the system are governed by the Extended Hubbard Hamiltonian and are coupled to a chain of localized spins modeled by the spin-$\frac{1}{2}$ $XX$ Hamiltonian. Using a multichannel Luttinger liquid approach, we determine the phase diagram of the metal chain. We find that spin-polarized triplet superconducting correlations persist for repulsive electronic interactions for sufficiently large interchain couplings.
