Title: Generation of localized magnetic moments in the charge-density-wave state Show Chinese title

Title: 电荷密度波态中局域磁矩的生成

Abstract: We propose a mechanism explaining the generation of localized magnetic moments in charge-density-wave compounds. Our model Hamiltonian describes an Anderson impurity placed in a host material exhibiting the charge-density wave. There is a region of the model's parameter space, where even weak Coulomb repulsion on the impurity site is able to localize the magnetic moment on the impurity. The phase diagram of a single impurity at T=0 is mapped. To establish the connection with experiment thermodynamic properties of a random impurity ensemble is studied. Magnetic susceptibility of the ensemble diverges at low temperature; heat capacity as a function of the magnetic field demonstrates pronounced low field peak. Both features are consistent with experiments on orthorhombic TaS3 and blue bronze. Show Chinese abstract

Abstract: 我们提出一种机制，解释电荷密度波化合物中局域磁矩的产生。 我们的模型哈密顿量描述了一个安德森杂质置于表现出电荷密度波的基质材料中。 在模型参数空间的一个区域中，即使杂质位点上的库仑排斥较弱，也能够将磁矩局域在杂质上。 绘制了T=0时单个杂质的相图。 为了与实验建立联系，研究了随机杂质集合的热力学性质。 集合的磁化率在低温下发散；作为磁场函数的比热显示出明显的低场峰值。 这两个特征与正交TaS3和蓝青铜的实验结果一致。