Unidirectional spin density wave state in metallic (Sr(1-x)La (x) )(2)IrO(4).
Unidirectional spin density wave state in metallic (Sr(1-x)La (x) )(2)IrO(4).
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DOI：
10.1038/s41467-017-02647-1
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发表时间：
2018-01-09
影响因子：
16.6
通讯作者：
Wilson SD
中科院分区：
文献类型：
--
作者：
Chen X;Schmehr JL;Islam Z;Porter Z;Zoghlin E;Finkelstein K;Ruff JPC;Wilson SD
同时表现出强自旋轨道耦合和电子相关效应的材料预计将具有许多新的电子态。一个突出的例子是在Sr 2 IrO 4中的Jeff = 1/2 Mott态，其中引入载流子被预测表现出类似于La 2CuO 4的S = 1/2 Mott态的高温超导性。虽然体超导电性目前仍然难以捉摸，异常的准粒子行为平行于那些在铜酸盐，如pseudogap形成和形成的d-波间隙观察电子掺杂Sr 2 IrO 4。通过揭示电子掺杂Sr 2 IrO 4中的自旋密度波态，建立了电子掺杂Sr 2 IrO 4和空穴掺杂La 2CuO 4的磁性平行关系.我们的磁共振X射线散射数据揭示了一个无公度的磁状态的存在，让人想起在单层铜氧化物（La 1-xSrx）2CuO 4中观察到的对角自旋密度波状态。这个链接支持的猜想，猝灭的莫特阶段在电子掺杂Sr 2 IrO 4和空穴掺杂La 2CuO 4支持共同竞争的电子阶段。电子掺杂Sr_2IrO_4是寻找非常规超导态的一种有趣材料。在这里，作者表明，自旋密度波状态存在于金属相的电子掺杂Sr 2 IrO 4提供了一个链接之间的电子相图的空穴掺杂的铜酸盐和电子掺杂的铱酸盐。
Materials that exhibit both strong spin–orbit coupling and electron correlation effects are predicted to host numerous new electronic states. One prominent example is the Jeff = 1/2 Mott state in Sr2IrO4, where introducing carriers is predicted to manifest high temperature superconductivity analogous to the S = 1/2 Mott state of La2CuO4. While bulk superconductivity currently remains elusive, anomalous quasiparticle behaviors paralleling those in the cuprates such as pseudogap formation and the formation of a d-wave gap are observed upon electron-doping Sr2IrO4. Here we establish a magnetic parallel between electron-doped Sr2IrO4 and hole-doped La2CuO4 by unveiling a spin density wave state in electron-doped Sr2IrO4. Our magnetic resonant X-ray scattering data reveal the presence of an incommensurate magnetic state reminiscent of the diagonal spin density wave state observed in the monolayer cuprate (La1−xSrx)2CuO4. This link supports the conjecture that the quenched Mott phases in electron-doped Sr2IrO4 and hole-doped La2CuO4 support common competing electronic phases. Electron-doped Sr2IrO4 is an intriguing material for searching for an unconventional superconducting state. Here the authors demonstrate that a spin density wave state exists in the metallic phase of electron-doped Sr2IrO4 which provides a link between the electronic phase diagrams of the hole-doped cuprates and the electron-doped iridates.
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影响因子：
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