280 citations · 769 across the 12 of their papers we have counts for
6 papers · 1 filter
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…
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.…
A Point-Contact Study of the Superconducting Gaps in Al-Substituted and C-Substituted MgB_2 Single Crystals
R. S. Gonnelli, D. Daghero, G. A. Ummarino +6
We present the results of directional point-contact spectroscopy in state-of-the-art Mg_{1-x}Al_xB_2 and Mg(B_{1-y}C_{y})_2 single crystals produced at ETH, Zurich. Fitting the con…
Carbon substitution in MgB2 single crystals: structural and superconducting properties
S. M. Kazakov, R. Puzniak, K. Rogacki +6
Growth of carbon substituted magnesium diboride Mg(B1-xCx)2 single crystals with 0<x<0.15 is reported and the structural, transport, and magnetization data are presented. The super…
Strongly enhancend anisotropic upper critical field in carbon substituted MgB2: impact of Fermi surface changes
R. Puzniak, M. Angst, A. Szewczyk +3
The upper critical field Hc2||c(0) of 85 kOe in Mg(B0.94C0.06)2 single crystals, determined from torque measurements, is more than twice as large as that one of 31 kOe in unsubstit…
NMR and dc-susceptibility studies of NaVGe2O6
B. Pedrini, J. L. Gavilano, D. Rau +4
We report the results of measurements of the dc magnetic susceptibility chi(T) and of the 23Na nuclear magnetic resonance (NMR) response of NaVGe2O6, a material in which the V ions…