Low-temperature specific heat of several high-temperature superconductors in the superconducting and mixed states

The low-temperature specific heat of high quality, well characterized sintered polycrystalline samples of superconducting Ba$\sb{0.6}$K$\sb{0.4}$BiO$\sb3,$ YBa$\sb2$Cu$\sb3$O$\sb{6.7},$ and Bi$\sb2$Sr$\sb2$CaCu$\sb2$O$\sb{\rm 8+x}$ were measured in the superconducting state. Careful analysis of the data below 10K indicate that the contribution to the specific heat which has a linear dependence on temperature, which has been observed in samples of YBa$\sb2$Cu$\sb3$O\sb{7-δ}, is not a universal feature of the high temperature superconductors. We observed that the linear term in YBa$\sb2$Cu$\sb3$O\sb{7-δ} is weakly dependent on the oxygen content, δ. We argue that a linear term of 4 mJ/mole K$\sp2$ is intrinsic to this compound, and while the origin of this linear term is still unknown it does not appear to be associated with the superconducting state.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Stupp, Steven Elliot

Contributors dc:contributor

• Ginsberg, Donald M.

• Physics, Condensed Matter

Statement dc:rights

• Copyright 1992 Stupp, Steven Elliot

Language dc:language

eng

Identifier

AAI9236601
(UMI)AAI9236601

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19846