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8 papers · 2 filters
Doping dependence of the vortex glass and sublimation transitions in the high- superconductor LaSrCuO as determined from macroscopic measurements
R. Gilardi, S. Streule, J. Mesot +2
Magnetization and ac-susceptibility measurements are used to characterize the mixed phase of the high-temperature cuprate superconductor LaSrCuO over a large ra…
Al substitution in MgB2 crystals: influence on superconducting and structural properties
J. Karpinski, N. D. Zhigadlo, G. Schuck +11
Single crystals of Mg1-xAlxB2 have been grown at a pressure of 30 kbar using the cubic anvil technique. Precipitation free crystals with x < 0.1 were obtained as a result of optimi…
Impurity Effect on Kramer-Pesch Core Shrinkage in s-Wave Vortex and Chiral p-Wave Vortex
N. Hayashi, Y. Kato, M. Sigrist
The low-temperature shrinking of the vortex core (Kramer-Pesch effect) is studied for an isolated single vortex for chiral p-wave and s-wave superconducting phases. The effect of n…
A cluster algorithm for resistively shunted Josephson junctions
Philipp Werner, Matthias Troyer
We present a cluster algorithm for resistively shunted Josephson junctions and similar physical systems, which dramatically improves sampling efficiency. The algorithm combines loc…
Influence of carbon substitution on the heat transport in single crystalline MgB2
A. V. Sologubenko, N. D. Zhigadlo, S. M. Kazakov +2
We report data on the thermal conductivity κ(T,H) in the basal plane of hexagonal single-crystalline and superconducting Mg(B_{1-x}C_x)_2 (x= 0.03, 0.06) at temperatures between 0.…
Dissociation of vortex stacks into fractional-flux vortices
A. De Col, V. B. Geshkenbein, G. Blatter
We discuss the zero field superconducting phase transition in a finite system of magnetically coupled superconducting layers. Transverse screening is modified by the presence of ot…