288 citations · 726 across the 14 of their papers we have counts for
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Point-contact spectroscopy of Al- and C-doped MgB2. Superconducting energy gaps and scattering studies
P. Szabo, P. Samuely, Z. Hol'anova +3
The two-band/two-gap superconductivity in aluminium and carbon doped MgB has been addressed by the point-contact spectroscopy. Two gaps are preserved in all samples with $T_c's…
MgB2 and Mg1-xAlxB2 single crystals: high-pressure growth and physical properties
J. Karpinski, S. M. Kazakov, J. Jun +4
Single crystals of MgB2 have been grown with a high-pressure cubic anvil technique. They grow via the peritectic decomposition of the MgNB9 ternary nitride. The crystals are of a s…
Single crystal growth of MgB2 and thermodynamics of Mg-B-N system at high pressure
J. Karpinski, S. M. Kazakov, J. Jun +4
Single crystals of MgB2 have been grown at high pressure via the peritectic decomposition of MgNB9. The crystals are of a size up to 1.5x0.9x0.2 mm3 with a weight up to 0.23 mg, an…
Anisotropy of the superconducting state properties and phase diagram of MgB2 by torque magnetometry on single crystals
M. Angst, R. Puzniak, A. Wisniewski +6
The angular and temperature dependence of the upper critical field Hc2 in MgB2 was determined from torque magnetometry measurements on single crystals. The Hc2 anisotropy gamma_H w…
MgB2 single crystals: high pressure growth and anisotropic properties
J. Karpinski, M. Angst, J. Jun +11
Single crystals of MgB2 with a size up to 1.5x0.9x0.2 mm3 have been grown with a high pressure cubic anvil technique. The crystal growth process is very peculiar and involves an in…
Comment on "Superconducting anisotropy and evidence for intrinsic pinning in single crystalline MgB2"
M. Angst, R. Puzniak, A. Wisniewski +3
In a recent paper [Phys. Rev. B 66, 012501 (2002)], torque data measured on a MgB2 single crystal in fields from 10 to 60 kOe at 10 K were presented. The authors obtained the aniso…
Magneto-optical reflectivity of superconducting MgB2 single crystals
A. Perucchi, L. Degiorgi, J. Jun +2
We present magneto-optical reflectivity results in the basal-plane of the hexagonal . The data were collected on a mosaic of single crystals with from…
Disorder-induced Phase Transition of Vortex Matter in MgB2
M. Angst, R. Puzniak, A. Wisniewski +3
Measurements of single crystalline MgB2 with torque magnetometry in fields up to 90 kOe reveal a sharp peak in the irreversible torque at about 0.85 Hc2. In the region between peak…
Temperature and field dependence of the anisotropy of MgB2
M. Angst, R. Puzniak, A. Wisniewski +5
The anisotropy gamma of the superconducting state of high quality single-crystals of MgB2 was determined, using torque magnetometry with two different methods. The anisotropy of th…
Critical Currents and Order-Disorder Phase Transition in the Vortex States of YBa2Cu4O8 with Chemically Introduced Disorder
M. Angst, S. M. Kazakov, J. Karpinski +3
A series of YBa_{2-x}Sr_xCu_4O_8 single crystals was measured to study the influence of site disorder on the transition line Hss(T) between quasi-ordered vortex lattice and highly…
Substitution effect of Zn and Cu in MgB2 on Tc and structure
S. M. Kazakov, M. Angst, J. Karpinski +2
The investigation of Zn substitution in MgB2 polycrystalline samples shows that about 0.1 Zn can be substituted in the structure of Mg deficient samples while it can not be substit…
Large oxygen-isotope effect in Sr_{0.4}K_{0.6}BiO_{3}: Evidence for phonon-mediated superconductivity
Guo-meng Zhao, K. Conder, M. Angst +6
Oxygen-isotope effect has been investigated in a recently discovered superconductor Sr_{0.4}K_{0.6}BiO_{3}. This compound has a distorted perovskite structure and becomes supercond…