Magnetic domains and stripes in a spin-fermion model for cuprates
Magnetic domains and stripes in a spin-fermion model for cuprates
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DOI：
10.1103/physrevlett.84.2690
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发表时间：
1999-08
影响因子：
8.6
通讯作者：
Buhler;Yunoki;Moreo
中科院分区：
文献类型：
--
作者：
Buhler;Yunoki;Moreo
应用到相互作用的费米子和经典自旋的模型的蒙特卡罗模拟表明，反铁磁自旋畴和电荷条纹后，空穴掺杂的存在。条纹具有每个位点约1/2孔的填充，并且它们将自旋畴与它们之间的π相移分开。观察到的条纹沿x或y轴沿着延伸。不需要特殊的边界条件或外部场来稳定这些结构。当磁无公度峰出现在动量π（1，1-δ）处时，电荷无公度峰出现在动量π（0，2-δ）处。负责条纹形成的电荷波动也诱导的赝能隙的状态密度。
Monte Carlo simulations applied to a model of interacting fermions and classical spins show the existence of antiferromagnetic spin domains and charge stripes upon hole doping. The stripes have a filling of approximately 1/2 hole per site, and they separate spin domains with a pi phase shift among them. The observed stripes run either along the x or y axes. No particular boundary conditions or external fields are needed to stabilize these structures. When magnetic incommensurate peaks are observed at momentum pi(1,1-delta), charge incommensurate peaks appear at (0,2delta). The charge fluctuations responsible for the stripe formation also induce a pseudogap in the density of states.