Critical current density and granularity in crystals of K3C60 fulleride

Buntar, V.; Buntar, A. G.

doi:10.1063/1.593841

Cited by 2 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…T e m p e r a t u r e ( K ) the early results obtained from the same magnetization measurements [10,20,29,33,47,[54][55][56][57]. The difference mainly comes from the uncertainties for the radius r, which has been confirmed by the functional relationship between J c and the particle size [54].…”

Section: E Determination Of Critical Current Densitymentioning

confidence: 53%

Full Set of Superconducting Parameters of K$_3$C$_{60}$

Wang¹,

Peng²,

Zong³

et al. 2022

Preprint

View full text Add to dashboard Cite

The superconducting parameters are the key for building or identifying the theory responsible for the mechanism of superconductivity. Such parameters for fulleride superconductors have not been well established despite the tremendous efforts over the past 30 years. Here we provide a full set of parameters through a systematic study on a well-characterized K3C60 sample. The obtained high upper critical field of 33.0±0.5 T from the direct electrical transport measurements together with the relatively high critical temperature and large critical current density classifies K3C60 as a promising three-dimensional superconducting magnet material with the advantage of the rich carbon abundance on the Earth. This high upper critical field along with the large reduced superconducting energy gap and strong phonon self-energy effect supports the strong electron-phonon coupling interactions in this superconductor. The evaluation of all self-consistently obtained parameters suggests the unconventional nature of the superconductivity for K3C60 with the joint contributions from the strong electron-phonon coupling and electron correlations. These results and findings are important not only for fundamentally understanding the superconductivity in fullerides but also for future superconducting magnet developments and applications.

show abstract