Low temperature specific heat studies on the pairing states of high-Tc superconductors: A brief review

H. D. Yang*, Jiunn-Yuan Lin

*此作品的通信作者

研究成果: Article同行評審

24 引文 斯高帕斯(Scopus)

摘要

Low temperature specific heat (LTSH) data on a variety of high-Tc superconductors, such as YBa2Cu3O7, La1-xSrxCuO4, Bi2Sr2CaCu2O8, and Ba0.6K0.4BiO3 are reviewed. The agreement between the experimental data and theoretical predictions, such as T2-dependence of specific heat at zero magnetic field and H1/2-dependence of electronic specific heat is widely discussed within the scenario of d-wave superconductivity. Impurity scattering effects and scaling model on d-wave superconductivity are verified using Zn- and Ni-doped La1-xSrxCuO4. The low energy quasiparticle density of states N(E)=N(0)+E1/2 are deduced from dirty d-wave superconductors. Absence of paramagnetic contribution to LTSH is found both in superconducting and non-superconducting underdoped samples suggesting that a mechanism be yond Kondo screening model maybe required to explain its magnetic property.

原文American English
頁(從 - 到)1861-1870
頁數10
期刊Journal of Physics and Chemistry of Solids
62
發行號9-10
DOIs
出版狀態Published - 1 1月 2001

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