Pressure effects on the superconducting properties ofYBa2Cu4O8

Abstract

Measurements of the magnetization under high hydrostatic pressure (up to 10.2 kbar) in YBa2Cu4O8 were carried out. From the scaling analysis of the magnetization data the pressure induced shifts of the transition temperature Tc, the volume V and the anisotropy γ have been obtained. It was shown that the pressure induced relative shift of Tc mirrors essentially that of the anisotropy. This observation uncovers a novel generic property of anisotropic type II superconductors, that inexistent in the isotropic case.

Muon-Spin Rotation Study of the Ternary Noncentrosymmetric Superconductors Li2Pd x Pt3−x B

“…Bearing these in mind, the discrepancy between the results obtained in the present study and those reported in Ref. [10] can be explained by the difference between the bulk and the surface properties of Li 2 Pd x Pt 3−x B in analogy with what was observed in conventional [19] and unconventional [20] superconductors. We would also like to emphasize that our data are in excellent agreement with the specific heat data presented in Ref.…”

Experimental Evidence for Two Gaps in the High-TemperatureLa1.83Sr0.17CuO4Superconductor

“…In order to extract the second moment of P (B) we used a similar procedure as described in Ref. [16]. All µSR time spectra were fitted by a three component expression:…”

Shockwave-Loading-Induced Enhancement of T c in Superconducting Bi2Sr2CaCu2O8+δ

“…Many materials become superconducting under a certain pressure, including Bi 2 Te 3 , Sb 2 Se 3 , H 2 S, and WTe 2 14–16 , motivating many researchers to direct their attention to pressure-induced superconductors. However, most of these efforts have focused on the exertion of hydrostatic pressure 14, 15, 17–21 and element substitution 3, 22–25 . Direct loading on superconductor materials with dynamic high temperature and high pressure has not been reported to date.…”