标题： 一维莫特绝缘体中自旋子-库恩多效应的隧穿谱学研究 显示英文标题

标题： Tunneling spectroscopy of the spinon-Kondo effect in one-dimensional Mott insulators

摘要： 我们研究一维莫特绝缘体在电荷能隙以下能量处的隧穿态密度（TDOS）。通过采用非线性朗道费米液体理论和密度矩阵重整化群（DMRG）模拟，我们预测在边界存在磁性杂质时，TDOS在边界附近亚能隙能量处会出现特征性的费米边缘奇异性特征。与金属中的康顿效应不同，这些共振表现出强烈的不对称性且具有幂律形式。幂律指数是普遍的，并由自旋子-康顿效应决定。 显示英文摘要

摘要： We study the tunneling density of states (TDOS) in one-dimensional Mott insulators at energies below the charge gap. By employing nonlinear Luttinger liquid theory and density-matrix renormalization group (DMRG) simulations, we predict that in the presence of a magnetic impurity at the boundary, characteristic Fermi-edge singularity features can appear at subgap energies in the TDOS near the boundary. In contrast to the Kondo effect in a metal, these resonances are strongly asymmetric and of power-law form. The power-law exponent is universal and determined by the spinon-Kondo effect.