Magnetic induction influence on kosterlitz-thouless transition in layered superconductors
Martynovich A.Yu.
An influence of external magnetic Held on the resistive transition in the Josephson decoupled layered superconductor is investigated. The critical induction BCr quite small with respect to lower critical field Hei is obtained. At small induction ÷ < Bcr ” the type two resistive transition is occurred as Kosterlitz-Thouless one. At large induction ÷ > ÷óÔ » the kind of phase transition is changed from second order to first one and the vortex pair dissociation has a hysteretic behavior in some temperature interval lying below and close to Kosterlitz-Thouless temperature Tjct The lowest boundary of this interval decreases by induction increasing and coincides with temperature of resistive transition.