Pressure effects on the superconducting properties of YBa_2Cu_4O_8
arXiv:cond-mat/0502576 · doi:10.1103/PhysRevB.72.014524
Abstract
Measurements of the magnetization under high hydrostatic pressure (up to 10.2 kbar) in YBa_2Cu_4O_8 were carried out. From the scaling analysis of the magnetization data the pressure induced shifts of the transition temperature T_c, the volume V and the anisotropy γhave been obtained. It was shown that the pressure induced relative shift of T_c mirrors essentially that of the anisotropy. This observation uncovers a novel generic property of anisotropic type II superconductors, that inexistent in the isotropic case.
4 pages, 3 figures