L. Cabo

Electric and magnetic characterization of NbSe2 single crystals: Anisotropic superconducting fluctuations above TC

Abstract Electric and magnetic characterization of NbSe 2 single crystals is first presented in detail. Then, some preliminary measurements of the fluctuation-diamagnetism (FD) above the transition temperature T C are presented. The moderate uniaxial anisotropy of this compound allowed us to observe the fluctuation effects for magnetic fields H applied in the two main crystallographic orientations. The superconducting parameters resulting from the characterization suggest that it is possible to do a reliable analysis of the FD in terms of the Ginzburg–Landau (GL) theory.

Non-homogeneous quench of the superconducting secondary of an inductive fault current limiter: implications for current limitation

In this work, we have studied the performance of an inductive fault current limiter having biphase (Bi-2223 and Bi-2212) superconducting rings as the secondaries of the transformer. We have paid special attention to the role played by the inhomogeneous transition of the superconducting cylinder and rings. For that, we have measured the variations of the voltage and the temperature of several parts of these rings during current faults by using metallic contacts and thermocouples attached at different points along their perimeter. Our results show that the limiter response during a fault is governed by the overheating of a small part of the superconducting element. These measurements also show that the temperature and resistance evolution of this dissipative zone is in turn mainly determined by the progress of the resistance of the Bi-2212 minority phase. This behaviour reduces the current limitation in devices based on this kind of superconducting material because it provokes a smooth impedance increment during the faults.

Anomalous precursor diamagnetism at low reduced magnetic fields and the role of T C inhomogeneities in the superconductors Pb 55 In 45 and underdoped La 1.9 Sr 0.1 Cu O 4

The magnetic field dependence of the magnetization was measured above the superconducting transition in a high-

Observation of enhanced fluctuation diamagnetism in lanthanum superconductors with dilute magnetic impurities

{T}_{C}

Diamagnetism around the Meissner transition in a homogeneous cuprate single crystal

underdoped cuprate

In-plane and transverse superconducting fluctuation diamagnetism in the presence of charge-density waves in 2 H − Nb Se 2 single crystals

({\mathrm{La}}_{1.9}{\mathrm{Sr}}_{0.1}\mathrm{Cu}{\mathrm{O}}_{4})

Inductive fault current limiter based on multiple superconducting rings of small diameter

and in a low-

Measurements of the fluctuation magnetization around TC in a YBa2Cu3O7 crystal : Determination of the critical-region width

{T}_{C}

Magnetic and electrical characterization of lanthanum superconductors with dilute Lu and Pr impurities

alloy

Comment on: Field-enhanced diamagnetism in the pseudogap state of the cuprate Bi2Sr2CacCu2O8+δ superconductor in an intense magnetic field. Authors' reply

({\mathrm{Pb}}_{55}{\mathrm{In}}_{45})