Unveiling Unequivocal Charge Stripe Order in a Prototypical Cuprate Superconductor
Unveiling Unequivocal Charge Stripe Order in a Prototypical Cuprate Superconductor
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DOI：
10.1103/physrevlett.128.207002
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发表时间：
2022-05-20
影响因子：
8.6
通讯作者：
Chang, J.
中科院分区：
文献类型：
--
作者：
Choi, J.;Wang, Q.;Chang, J.
在铜酸盐中，高温超导性、自旋密度波顺序和电荷密度波（CDW）顺序相互交织，由于畴的形成，对称性的确定具有挑战性。我们利用x射线衍射研究了La1.88Sr0.12CuO4铜原型中的CDW，并采用单轴压力作为畴选择刺激，明确了CDW的单向性。当均质超导性被磁场部分抑制时，CDW振幅增加了5倍。这种场诱导态为假定的对密度波态提供了理想的搜索环境。
In the cuprates, high-temperature superconductivity, spin-density-wave order, and charge-density-wave (CDW) order are intertwined, and symmetry determination is challenging due to domain formation. We investigated the CDW in the prototypical cuprate La1.88Sr0.12CuO4 via x-ray diffraction employing uniaxial pressure as a domain-selective stimulus to establish the unidirectional nature of the CDW unambiguously. A fivefold enhancement of the CDW amplitude is found when homogeneous superconductivity is partially suppressed by magnetic field. This field-induced state provides an ideal search environment for a putative pair-density-wave state.