Layered honeycomb magnets are of interest as potential realizations of the Kitaev quantum spin liquid (KQSL), a quantum state with long-range spin entanglement and an exactly solvable Hamiltonian. Conventional magnetically ordered states are present for all currently known candidate materials, however, because non-Kitaev terms in the Hamiltonians obscure the Kitaev physics. Current experimental studies of the KQSL are focused on 4d or 5d transition metal-based honeycombs, in which strong spin-orbit coupling can be expected, yielding Kitaev interaction that dominates in an applied magnetic field. In contrast, for 3d-based layered honeycomb magnets, spin-orbit coupling is weak, and thus, Kitaev physics should be substantially less accessible. Here, we report our studies on BaCo2(AsO4)2, for which we find that the magnetic order associated with the non-Kitaev interactions can be fully suppressed by a relatively low magnetic field, yielding a nonmagnetic material and implying the presence of strong magnetic frustration and weak non-Kitaev interactions.

中文翻译：

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钴基蜂窝中的弱场感应非磁性态。

层状蜂窝磁体作为Kitaev量子自旋液体（KQSL），具有长距离自旋纠缠的量子态和可精确求解的哈密顿量的潜在实现而受到关注。但是，因为哈密顿量中的非Kitaev术语掩盖了Kitaev物理学，所以所有当前已知的候选材料都具有常规的磁序状态。目前，对KQSL的实验研究集中在4d或5d过渡金属基蜂窝材料上，在这种材料中可以预期发生强烈的自旋轨道耦合，产生在施加磁场中占主导地位的Kitaev相互作用。相反，对于基于3d的层状蜂窝磁体，自旋轨道耦合很弱，因此，基塔耶夫物理学的可及性应该大大降低。在这里，我们报告我们对BaCo2（AsO4）2的研究，