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arXiv 2003.11130cond-mat.str-el
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铜氧化物赝隙相的热霍尔效应

Thermal Hall effect in the pseudogap phase of cuprates

Chandra M. Varma

摘要:

最近由舍布鲁克的小组提出的猜想,即他们在铜氧化物的赝能隙相中观察到的反常热霍尔效应是由于声子引起的,这一猜想得到了早先结果的支持,即在该相中观察到的回路电流序必定引起晶格畸变,这种畸变在序参量和所施加的磁场中是线性的。晶体对称性的降低取决于场的方向。一个结果是,弹性常数的变化成正比的字段,并示出诱导轴向热传输与相同的对称性的洛伦兹力强制执行正常的电子霍尔效应。在磁场中的弹性常数的直接测量建议验证的定量方面的结果。

英文摘要:

The conjecture made recently by the group at Sherbrooke, that their observed anomalous thermal Hall effect in the pseudo-gap phase in the cuprates is due to phonons, is supported on the basis of an earlier result that the observed loop-current order in this phase must induce lattice distortions which are linear in the order parameter and an applied magnetic field. The lowered symmetry of the crystal depends on the direction of the field. A consequence is that the elastic constants change proportional to the field and are shown to induce axial thermal transport with the same symmetries as the Lorentz force enforces for the normal electronic Hall effect. Direct measurements of elastic constants in a magnetic field are suggested to verify the quantitative aspects of the results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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