Coincident onset of charge-density-wave order at a quantum critical point in underdoped YBa2Cu3Ox
Coincident onset of charge-density-wave order at a quantum critical point in underdoped YBa2Cu3Ox
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DOI：
10.1103/physrevb.97.224513
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发表时间：
2018-06-14
影响因子：
3.7
通讯作者：
Lee, J. -S.
中科院分区：
文献类型：
--
作者：
Jang, H.;Lee, W. -S.;Lee, J. -S.
最近展示的X射线散射方法，使用自由电子激光与高场脉冲磁铁开辟了新的机会，探索电荷密度波（CDW）秩序在铜氧化物高温超导体。使用这种方法，我们大大降低了超导电性与磁场高达33 T的研究CDW秩序在YBa2Cu3Ox x在低温附近的一个假定的量子临界点（QCP）在p（1）类似于0.08孔每铜。我们发现在掺杂浓度小于p1的样品中没有检测到CDW。我们的结果表明，CDW基态的起始点位于零场超导圆顶内，平移对称性破缺与p（1）处的QCP有关。
The recently demonstrated x-ray scattering approach using a free electron laser with a high field pulsed magnet has opened new opportunities to explore the charge-density-wave (CDW) order in cuprate high temperature superconductors. Using this approach, we substantially degrade the superconductivity with magnetic fields up to 33 T to investigate the onset of CDW order in YBa2Cu3Ox x at low temperatures near a putative quantum critical point (QCP) at p(1) similar to 0.08 holes per Cu. We find no CDW can be detected in a sample with a doping concentration smaller than p1. Our results indicate that the onset of the CDW ground state lies inside the zero-field superconducting dome, and broken translational symmetry is associated with the putative QCP at p(1).