Superconducting energy gap ofBaPb1−xBix

Anomalous relaxation kinetics and charge-density-wave correlations in underdoped BaPb 1− x Bi x O 3

“…We return to provide further evidence for this shortly, when we consider the transient response. When cooling below T C , a conductivity gap is expected to open below ∼1 THz (40). We do not discuss these features here, and we will be focusing only on the normal-state response.…”

Fullerenes and carbon derivatives: From insulators to superconductors

“…Therefore a considerable amount of spectral weight is transferred from the Drude to a MIR component of s 1 (x ) [91,146]. Moreover similarly to the fullerene superconductors, the same contrast between unconventional normal state properties and rather straightforward BCS-like properties for the superconducting state can be recognized in both potassium and bismuth superconducting compounds [147,148].…”

Feeble Metallicity and Robust Semiconducting Regime in Structurally Sensitive Ba(Pb, Sn)O$_3$ Alloys

“…Among these, the emerging superconducting properties, similar to that exhibited by cuprates, have been investigated extensively in their pristine form or with substitution at A and/or B sites [9][10][11] . BaPb 1−x B x O 3 is one such member in this family which exhibits Drude kind of metallic behaviour in its pristine form (x=0) and superconducting phase upon Bi (0<x≤0.3) substitution at T c = 13 K [12][13][14][15][16][17] . The solid solution also demonstrates the metal to insulator transition at x=0.…”