Zhu Jian-Xin, Martin Ivar, Bishop A R
Theoretical Division, Los Alamos National Laboratory, New Mexico 87545, USA.
Phys Rev Lett. 2002 Aug 5;89(6):067003. doi: 10.1103/PhysRevLett.89.067003. Epub 2002 Jul 23.
A comparative study is made for the spin and charge structure around superconducting vortices and unitary impurities, by solving self-consistently an effective Hamiltonian including interactions for both antiferromagnetic spin-density wave (SDW) and d-wave superconducting orderings. Around vortices, we show the induction of an SDW two-dimensionally modulated with a period of eight lattice constants (8a(0)) and an associated charge-density wave (CDW) with a period of 4a(0), which explains very well recent experimental observations. In the case of unitary impurities, an SDW modulation with identical periodicity, but without an associated CDW, is also predicted.
通过自洽求解一个包含反铁磁自旋密度波（SDW）和d波超导序相互作用的有效哈密顿量，对超导涡旋和幺正杂质周围的自旋和电荷结构进行了比较研究。在涡旋周围，我们展示了二维调制的SDW，其周期为八个晶格常数（8a(0)），以及与之相关的周期为4a(0)的电荷密度波（CDW），这很好地解释了最近的实验观测结果。在幺正杂质的情况下，还预测了具有相同周期性但没有相关CDW的SDW调制。
