@article {37110,
	title = {Magnetic relaxation measurements in the region of the second magnetization peak in a HgBa2CuO4+delta single crystal},
	journal = {PHYSICAL REVIEW B},
	volume = {59},
	year = {1999},
	month = {1999},
	pages = {12121 - 12126},
	abstract = {The temperature and magnetic-field dependence of activation energy U-o(T,H) for creep has been studied in an HgBa2CuO4+delta single crystal below and above the "fishtail" peak H-sp(T). At constant temperature, U-o(H) increases up to H-sp{\textquoteright}(T) and then for H>H-sp{\textquoteright}(T) it decreases. H-sp{\textquoteright}(T) is located lower than the field H-sp(T) deduced from the hysteresis loops. The decrease of the activation energy is probably indicative of a plastic-type creep of the vortex lattice. We demonstrate that the overall behavior of U-o(T,H) at the second magnetization peak line H-sp(T) in the phase diagram of HgBa2CuO4+delta exhibits similarities with that observed in Bi2Sr2CaCu2O8+delta and YBa2Cu3O6.95 compounds. [S0163-1829(99)04018-7].},
	isbn = {2469-99502469-9969},
	author = {Pissas, M. and Stamopoulos, D. and Moraitakis, E. and Kallias, G. and Niarchos, D. and Charalambous, M.}
}
