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雒建林, 郑萍. 高分辨差分比热测量方法及在高温超导体研究中的应用[J]. 物理, 2011, 40(02): 116-120.
引用本文: 雒建林, 郑萍. 高分辨差分比热测量方法及在高温超导体研究中的应用[J]. 物理, 2011, 40(02): 116-120.
High-resolution differential specific heat measurement[J]. PHYSICS, 2011, 40(02): 116-120.
Citation: High-resolution differential specific heat measurement[J]. PHYSICS, 2011, 40(02): 116-120.

高分辨差分比热测量方法及在高温超导体研究中的应用

High-resolution differential specific heat measurement

  • 摘要: 差分比热实验方法是测量两个样品的比热差,具有高达万分之一的比热测量分辨率,适合测量相变时微小的比热变化及宽温区的电子比热.文章介绍了高分辨连续升温差分比热实验的测量原理和测量方法,并以铜氧化物高温超导体Y0.8Ca0.2Ba2Cu3O6+x为例,介绍了差分比热实验手段在宽温区电子比热的获得、正常态赝能隙及超导凝聚能研究等方面的应用.

     

    Abstract: Differential specific heat measurement detects the difference in specific heat between two samples. The system has an extremely high resolution greater than 10-4, and is suitable for measuring a tiny change in specific heat when a material experiences a phase transition, or for measuring electronic specific heat over a wide temperature range. In this paper, we describe the principle and method of high-resolution continuous heating differential specific heat measurement. In addition, we introduce its application in the studies of electronic specific heat, normal state pseudo-gaps, and superconducting condensed energy in high Tc cuprates.

     

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