In-Field Transport Critical Currents in Superhydride Superconductors: Highly-Compressed CeH9

Experimental discovery of near-room-temperature superconductivity in highly-compressed hydrogen sulfate started a new era in superconductivity. To date, dozens of superconducting hydride phase with transition temperature above LN2 have been discovered. While primary focus of the research in this field is to determine fundamental superconducting parameters of these superconductors, here we revealed primary applied property of these superconductors which is the field dependence of transport critical current,
I
_c
(
B
,
T
). We analyzed reported
V
(
I
) curves for highly compressed CeH
₉
sample with
T
_c
= 70 K, and showed that this hydride exhibits practically identical
I
_c
(
B
,
T
) to HTS 1G-wire (Bi,Pb)
₂
Sr
₂
Ca
₂
Cu
₃
O
₁₁
. We also showed that the
n
-value in CeH
₉
superhydride is obeyed nearly identical dependence vs critical current as the one observed in Nb
₃
Sn conductors.