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arXiv 1111.2560cond-mat.supr-con
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铜酸盐的高温超导机制

High-Temperature Superconductivity Mechanism for Cuprates

Richard H. Squire, Norman H. March

摘要:

Egorov和March绘制了钇钡铜氧化物的电阻率和铜自旋-晶格弛豫时间的乘积与温度的关系图,发现在温度T大于超导温度时最小,预示着电子相变,可以解释为形成“预制”对。在这方面,我们提出了一个超导机制的基础上的概念,即预先形成的对是一个“软”玻色子(本地化的,不同类型的库珀对)的解离以上的经典BKT转变温度,导致在两个圆形的电荷密度波。该模型为大量的实验工作提供了解释,并为上村-霍姆斯定律的基础提供了物理解释。

英文摘要:

Egorov and March plotted the product of resistivity and the copper spin-lattice relaxation time vs. temperature for yttrium barium copper oxide finding a minimum at temperature T greater than the superconducting temperature, heralding an electronic phase change which can be interpreted as the formation of a "preformed" pair. In this context we propose a superconducting mechanism based on the notion that the preformed pair is a "soft" boson (a localized, different type of Cooper pair) which dissociates above the classical BKT transition temperature, resulting in two circular charge density waves. The model suggests explanations for considerable experimental work and offers a physical explanation for the basis of the Uemura-Homes law.

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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