Microwave measurements of the in-plane and c-axis conductivity in HgBa2CuO4+δ: Discriminating between superconducting fluctuations and pseudogap effects
M. S. Grbić, N. Barišić, A. Dulčić, I. Kupčić, Y. Li, X. Zhao, G. Yu, M. Dressel, M. Greven, M. Požek
DOI 10.1103/PhysRevB.80.094511 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
An approach to microwave measurements is used in order to determine both, the in-plane and out-of-plane conductivity of the high-Tc superconductor HgBa2CuO4+δ near optimal doping. Unlike the ab-plane conductivity, the c-axis conductivity is highly sensitive to superconducting fluctuations. From a single c-axis data set, we can clearly discern the opening of the pseudogap at T∗=185(15) K, the appearance of the superconducting fluctuations at a much lower temperature T′=105(2) K, and the full transition to the superconducting state at the critical temperature Tc=94.3 K. Thus, with the present high sensitivity, we establish that the extent of the superconducting fluctuations is only about 10 K above Tc.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| HgBa2CuO4+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 94.3 | Pressure not reported | midpoint |
Similar papers
Anomalous microwave conductivity due to collective transport in the pseudogap state of cuprate superconductors
similarity 0.98C. Kusko et al.
Source status unknown — claims are unverified
Interplay between the pseudogap and superconductivity in underdoped HgBa2CuO4+δ single crystals
similarity 0.96Y. Gallais et al.
Source status unknown — claims are unverified
Optical and thermodynamic properties of the high-temperature superconductor HgBa2CuO4+δ
similarity 0.96E. van Heumen et al.
Source status unknown — claims are unverified
Temperature Dependence of the Gap Size near the Brillouin-Zone Nodes of HgBa2CuO4+δ Superconductors
similarity 0.95W. Guyard et al.
Source status unknown — claims are unverified
Transition temperature and a spatial dependence of the superconducting gap for multilayer high-temperature superconductors
similarity 0.95Krzysztof Byczuk & Jozef Spałek
Source status unknown — claims are unverified
Enhancement of the Critical Temperature of HgBa2CuO4+δ by Applying Uniaxial and Hydrostatic Pressure: Implications for a Universal Trend in Cuprate Superconductors
similarity 0.95F. Hardy et al.
Source status unknown — claims are unverified