<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pissas, M.</style></author><author><style face="normal" font="default" size="100%">Stamopoulos, D.</style></author><author><style face="normal" font="default" size="100%">Psycharis, V</style></author><author><style face="normal" font="default" size="100%">Ma, Y.C.</style></author><author><style face="normal" font="default" size="100%">Wang, N.L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Splitting of the second magnetization peak in the superconductor Tl2Ba2CaCu2O8+x</style></title><secondary-title><style face="normal" font="default" size="100%">PHYSICAL REVIEW B</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2006</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">73</style></volume><isbn><style face="normal" font="default" size="100%">2469-99502469-9969</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The vortex-matter phase diagram of Tl2Ba2CaCu2O8+x single crystal superconductor has been studied, using bulk and local magnetization measurements. We observed a second magnetization peak in the temperature interval 20 K &lt; T &lt; 40 K. At 40 K the second peak splits into two peaks, termed the upper and lower second magnetization peaks (USP and LSP), respectively. In the magnetic field interval [H-LCP,H-UCP] we observed the clear signature of a first-order melting transition of the vortex lattice. This particular behavior is similar to a situation with two critical endpoints of the first-order melting line and one coexistence point, where the topological transition line ends on the first-order melting line.</style></abstract><issue><style face="normal" font="default" size="100%">17</style></issue></record></records></xml>