Substitution effect in high-Tc mercury-based cuprate superconductor

Vortex Glass Transition in High Tc Superconductor

Zhenhua Ning Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA (Dated: December 13, 2006) Abstract This paper tries to give a clear description of the motion of vortex and the vortex glass transitions in high Tc superconductors from both theoretical analysis and experimental observation. Then a controversy of the location of the vortex glass transition in ...

Formation of magnetic moments in the cuprate superconductor Hg0.8Cu0.2Ba2Ca2Cu3O8+δ below Tc seen by NQR

Formation of magnetic moments in the cuprate superconductor Hg0.8Cu0.2Ba2Ca2Cu3O8+δ below Tc seen by NQR H. Breitzke, I. Eremin, D. Manske, E.V. Antipov and K. Lüders Fachbereich Physik, Freie Universität Berlin, D-14195 Berlin, Germany Institut für Theoretische Physik, Freie Universität Berlin, D-14195 Berlin, Germany Physics Department, Kazan State University, 420008 Kazan, Russia Department ...

Formation of magnetic moments in the cuprate superconductor Hg0:8Cu0:2Ba2Ca2Cu3O8þd below Tc seen by NQR

We report pure zero field nuclear magnetic resonance (NQR) measurements on the optimally doped three layer highTc-compounds HgBaCaCuO and HgBaCaCuO(F) with Tc 1⁄4 134 K. Above Tc two Cu NQR line pairs are observed in the spectra corresponding to the two inequivalent Cu lattice sites. Below Tc the Cu NQR spectra show additional lines leading to the extreme broadened Cu NQR spectra at 4.2 K well ...

Theory of the magnetoeletric effect in a lightly doped high-Tc cuprate

High-resolution Measurement by a High-Tc Superconductor Sampler

3⁄4We measured a signal current waveform by using a high-Tc superconductor (HTS) sampler with a 1-ps delay between every sampling point. The maximum time differential obtained in the measured waveform was 12 mA/ps with 2.5-mA current sensitivity at 25 K. This result guarantees that the sampler is able to measure current waveforms correctly when their maximum time differential is less than 12 mA...