<?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%">Stamopoulos, D.</style></author><author><style face="normal" font="default" size="100%">Pissas, M.</style></author><author><style face="normal" font="default" size="100%">Bondarenko, A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Possible reordering of vortex matter near the end point of the second peak line in the YBa2Cu3O7-delta compound</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%">2002</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2002</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">66</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%">We report on the second peak line H-sp and the possible phases of vortex matter near T-c for a detwinned underdoped YBa2Cu3O7-delta single crystal. Our local ac and dc permeability measurements revealed that the second peak line H-sp does not terminate either at the critical temperature or on the irreversibility line H-irr. Pronounced hysteretic behavior is observed in the regime below the second peak line H-sp. Below (above) a characteristic field the end point of the second peak differs from (coincides with) the irreversibility point, H(end point)not equalH(irr) (H(end point)equivalent toH(irr)). A possible reentrance of a dynamically ordered solid phase in the high-temperature regime near the irreversibility line is discussed.</style></abstract><issue><style face="normal" font="default" size="100%">21</style></issue></record></records></xml>