Browsing by Subject "Superconductivity"
Now showing items 1-9 of 9
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Article
Anisotropy of the resistivity in the a-b plane of a superconducting YBa2Cu3O7-δ single crystal
(1996)We have measured the in-plane longitudinal resistivities pa and pb as functions of temperature and magnetic field. The measurements were all made on the same detwinned single crystal of YBa2Cu3O7-δ (YBCO). Defining Tc to ...
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Article
A comparative mass spectroscopic study between infrared and ultraviolet laser ablation of a superconducting YBa2Cu3O7-x target
(1999)Time-of-flight mass spectra of ionic species produced by the laser ablation of a YBa2Cu3O7-x target have been measured. The experimental geometry and laser conditions used in this study are similar to those used for the ...
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Article
Evidence for diquarks in lattice QCD
(2006)Diquarks may play an important role in hadron spectroscopy, baryon decays, and color superconductivity. We investigate the existence of diquark correlations in lattice QCD by considering systematically all the lowest energy ...
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Article
Fracton superconductivity in quasicrystals - A theoretical possibility suggested by experiment
(1999)Scattering of electrons due to fractons can result in a resistivity that decreases with temperature. Such a behavior also appears in real quasicrystalline materials. If this is then attributed to effective fracton scattering, ...
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Conference Object Open Access
Modelling and data acquisition for continuing vocational training of upper secondary school physics teachers in pupil-active learning of superconductivity and electromagnetism based on minds-on simple experiments
(University of Cyprus, 2010)The MOSEM2 project (MOdelling and data acquisition for continuing vocational training of upper secondary school physics teachers in pupil-active learning of Superconductivity and ElectroMagnetism based on Minds-On Simple ...
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Article
Photothermal measurements of differential reflectivity of YBCO related to the symmetry of the superconducting order parameter
(1996)We have investigated symmetry of the differential optical response of single YBCO domains in the a-b plane. As a function of temperature, this response consists of a smooth background and a sharp peak in the vicinity of ...
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Article
Sign reversal of the Hall effect in YBa2(Cu1-x)3O7-δ single crystals
(1995)We have measured the in-plane Hall effect and in-plane resistivity of cobalt-doped YBa2Cu3O7-δ (YBCO) single-crystal samples. The concentration of cobalt ranged from 1 to 3%. As the applied field was varied, a sign reversal ...
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Article
Symmetry of differential optical responses of normal and superconducting phases in single-crystal YBCO
(1995)We measured differential optical reflectivity (DOR) of YBCO single domains. DOR measurements reject the temperature independent bulk reflectivity and reveal dR dT. These measurements detect the superconducting transition, ...
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Article
Tunneling in Pb-YBCO junctions: Determining the symmetry of the pairing state
(1995)We report on our efforts to understand the origin of supercurrent observed in c-axis tunnel junctions on YBCO [Sun A. G. et al., Phys. Rev. Lett. 72, 2267 (1994).] by studying the phase coherence of a-axis/c-axis and ...