Evidence for a Square-Square Vortex Lattice Transition in a High-Tc Cuprate Superconductor
Evidence for a Square-Square Vortex Lattice Transition in a High-Tc Cuprate Superconductor
复制标题
高温铜酸盐超导体中方-方涡旋晶格转变的证据
DOI：
10.1103/physrevlett.129.067001
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发表时间：
2022
影响因子：
8.6
通讯作者：
LeBoeuf D.
中科院分区：
文献类型：
--
作者：
Campbell D.J.;Frachet M.;Benhabib S.;Gilmutdinov I.;Proust C.;Kurosawa T.;Momono N.;Oda M.;Horio M.;Kramer K.;Chang J.;Ichioka M.;LeBoeuf D.
利用强磁场中的声速和衰减测量，我们确定了涡晶格状态的新转变。在超过 35 T 的磁场和远低于零场的温度中观察到的转变是在掺杂水平为 的涡晶格的压缩模量中检测到的。我们基于 Eilenberger 涡旋晶格理论的理论分析表明，这种转变对应于长期寻求的方形涡旋晶格的 45° 旋转，预计会在范霍夫奇点附近出现波内超导体。
Using sound velocity and attenuation measurements in high magnetic fields, we identify a new transition in the vortex lattice state of. The transition, observed in magnetic fields exceeding 35 T and temperatures far below zero field, is detected in the compression modulus of the vortex lattice, at a doping level of. Our theoretical analysis based on Eilenberger’s theory of the vortex lattice shows that the transition corresponds to the long-sought 45° rotation of the square vortex lattice, predicted to occur in-wave superconductors near a van Hove singularity.