论文标题
呼吸pyrochlore晶格中的旋转冰片晶格模型的相图
Phase Diagram of a Spin-ice Kondo Lattice Model in a Breathing Pyrochlore Lattice
论文作者
论文摘要
我们在带有经典局部旋转的呼吸pyrochlore晶格上研究了旋转冰片晶格模型。为了在四个代表性值的巡回电子数量密度的四个代表性值下研究磁相图，使用了高效的核多项式扩展方法以及经典的蒙特卡洛法。我们通过改变跳跃比率来调整呼吸模式 - 沿着不相等路径的跳动参数的比率。通过跳跃比，近调耦合和电子填充分数，在参数的相图中稳定了几个有趣的磁性阶段，其中包括“全能/全输出”的订购旋转配置阶段，旋转冰键，订购了$ 16 $和$ 16 $和$ 32 $的旋转站点的磁性单元中的旋转站点，以及磁性单元中的旋转型号，以及在小价值的阶段阶段阶段的小价值均值的效果。
We study a spin-ice Kondo lattice model on a breathing pyrochlore lattice with classical localized spins. The highly efficient kernel polynomial expansion method, together with a classical Monte Carlo method, is employed in order to study the magnetic phase diagram at four representative values of the number density of itinerant electrons. We tune the breathing mode by varying the hopping ratio -- the ratio of hopping parameters for itinerant electrons along inequivalent paths. Several interesting magnetic phases are stabilized in the phase diagram parameterized by the hopping ratio, Kondo coupling, and electronic filling fraction, including an "all-in/all-out" ordered spin configuration phase, spin-ice, ordered phases containing $16$ and $32$ spin sites in the magnetic unit cell, as well as a disordered phase at small values of the hopping ratio.
