论文标题
旋转密度波与三角形抗fiferromagnet中的分数磁化高原
Spin Density Wave versus Fractional Magnetization Plateau in a Triangular Antiferromagnet
论文作者
论文摘要
我们报告了在量子挫败的抗磁管绝缘子CS $ _2 $ cobr $ _4 $中，在量子挫败的量子挫折式绝缘绝缘体中，高度非经典的旋转密度波（SDW）状态非常出色。与著名的ISIS自旋链案例相反，这里的SDW稳定在竞争平面链内各向异性和沮丧的链链交换。与SDW相位相邻的是一个广泛的$ M = 1/3 $磁化平台，可以将其视为将SDW状态的相应锁定到UP-DOW（UUD）旋转结构中。这代表了三角型量子磁体中长期以来的SDW-uud跃迁的第一个例子。
We report an excellent realization of the highly non-classical incommensurate spin-density wave (SDW) state in the quantum frustrated antiferromagnetic insulator Cs$_2$CoBr$_4$. In contrast to the well-known Ising spin chain case, here the SDW is stabilized by virtue of competing planar in-chain anisotropies and frustrated interchain exchange. Adjacent to the SDW phase is a broad $m = 1/3$ magnetization plateau that can be seen as a commensurate locking of the SDW state into the up-up-down (UUD) spin structure. This represents the first example of long-sought SDW-UUD transition in triangular-type quantum magnets.
