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arXiv 0807.3741cond-mat.supr-con
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铜氧化物的超导理论

Theory of Superconductivity in the Cuprates

Vivek Aji, Arkady Shekhter, Chandra Varma

摘要:

时间反演破缺序参量的量子临界涨落是在铜氧化物的赝能隙机制中观察到的,它与费米子的局部角动量的晶格等效耦合.这种耦合有利于费米子通过接近$\pm π/2$的角度散射,这明确地表明促进了d波配对。正确的数量级的$T_c$和归一化的零温度间隙$Δ/T_c$计算使用相同的波动,这给出了温度,频率和动量的依赖性的反常正常状态的性质附近的量子临界值的掺杂和两个参数提取适合这样的实验。

英文摘要:

The quantum critical fluctuations of the time-reversal breaking order parameter which is observed in the pseudogap regime of the Cuprates are shown to couple to the lattice equivalent of the local angular momentum of the fermions. Such a coupling favors scattering of fermions through angles close to $\pm π/2$ which is unambiguously shown to promote d-wave pairing. The right order of magnitude of both $T_c$ and the normalized zero temperature gap $Δ/T_c$ are calculated using the same fluctuations which give the temperature, frequency and momentum dependence of the the anomalous normal state properties for dopings near the quantum-critical value and with two parameters extracted from fit to such experiments.

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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