Abstract
In- and out-of-plane optical spectra and specific heat measurements for the single layer cuprate superconductor (Hg-1201) at optimal doping are presented. Both the in-plane and out-of-plane superfluid density agree well with a recently proposed scaling relation . It is shown that there is a superconductivity induced increase of the in-plane low frequency spectral weight which follows the trend found in underdoped and optimally doped (Bi-2212) and optimally doped (Bi-2223). We observe an increase of optical spectral weight which corresponds to a change in kinetic energy which is more than enough to explain the condensation energy. The specific heat anomaly is 10 times smaller than in (YBCO) and 3 times smaller than in Bi-2212. The shape of the anomaly is similar to the one observed in YBCO showing that the superconducting transition is governed by thermal fluctuations.
6 More- Received 19 October 2006
DOI:https://doi.org/10.1103/PhysRevB.75.054522
©2007 American Physical Society