Related papers: Superconductivity at 49 K in copper doping magnesi…
This paper has been withdrawn by the authors. Significantly revised versions of the results of this paper are now available in arXiv:0707.0487v2 and arXiv:0808.3169v1.
This paper has been withdrawn. Please see cond-mat/0605124 for new and updated data and conclusions pertaining to this study.
The paper has been withdrawn by the authors. The contents of the paper will be used in a future communication which will contain major addition and shift of focus.
This paper has been withdrawn by the author because the main result is gauge-dependent.
The effects of copper doping on the structural and superconducting phase transitions of Ba(Ni$_{1-x}$Cu$_{x}$)$_{2}$As$_{2}$ were studied by examining the resistivity, magnetic susceptibility, and specific heat. We found an abrupt increase…
This paper has been withdrawn by the first author due to disagreement with experiments.
We report the effect of carbon doping in Ti-stabilized nonstoichiometric molybdenum diboride (Mo$_{0.96}$Ti$_{0.04}$)$_{0.8}$B$_{2}$, which exhibits bulk superconductivity below $T_{\rm c}$ = 7.0 K. It is found that…
This paper has been withdrawn by the author due to incomplete interpretation for the results.
%auto-ignore This paper has been withdrawn by the authors.
In this paper, we apply the two-band extension [1] of BCS theory [2] into the Mattis-Bardeen theory [3] to obtain the surface impedance of a two-band superconductor, and apply it to magnesium diboride (MgB2) for radiofrequency (RF)…
This paper has been withdrawn Abstract: This paper has been withdrawn by the author due to the publication.
Paper withdrawn. A revised version may appear later.
The resistivity, magnetoresistance, and magnetic susceptibility are measured in single crystals of FeTe0.65Se0.35 with Cu, Ni, and Co substitutions for Fe. The crystals are grown by Bridgman's method. The resistivity measurements show that…
It has been shown that graphene doping is sufficient to lead to an improvement in the critical current density - field performance (Jc(B)), with little change in the transition temperature in MgB2. At 3.7 at% graphene doping of MgB2 an…
This paper has been withdrawn by the author because it is superseded by a new preprint: Tran Doan Huan & Nguyen Phuc Hai: arXiv:1010.5162.
Metastable superconductivity at \approx 50 K in the interfaces formed by metallic and oxidized magnesium (MgO) has been observed by ac magnetic susceptibility and electrical resistance measurements. The superconducting interfaces have been…
This paper has been withdrawn by the author.
Through partial substitution of Sm by U in SmFeAsO, a different member of the family of iron-based superconductors was successfully synthesized. X-ray diffraction measurements show that the lattice constants along the a and c axes are both…
This paper has been withdrawn by the author, due to the insecurity against attacks received in quant-ph/0605027v5.
This paper has been withdrawn by authors.