Observation of anisotropic diamagnetism above the superconducting transition in iron-pnictide Ba_(1-x)K_xFe2As2 single crystals due to thermodynamic fluctuations

Autor:	Mosqueira, J., Dancausa, J. D., Vidal, F., Salem-Sugui, Jr., S., Alvarenga, A., Luo, H. -Q., Wang, Z. -S., Wen, H. -H.
Rok vydání:	2010
Předmět:	Condensed Matter - Superconductivity
Zdroj:	Phys. Rev. B 83, 094519 (2011)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.83.094519
Popis:	High resolution magnetization measurements performed in a high quality Ba_(1-x)K_xFe2As2 single crystal allowed to determine the diamagnetism induced above the superconducting transition by thermally activated Cooper pairs. These data, obtained with magnetic fields applied along and transverse to the crystal ab layers, demonstrate experimentally that the superconducting transition of iron pnictides may be explained at a phenomenological level in terms of the Gaussian Ginzburg-Landau approach for three-dimensional anisotropic superconductors. Comment: Final version with minor corrections. 6 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1010.3581 Zobrazit plný text záznamu View this record from Arxiv