Actas de congresos
Competing Orders In Underdoped (ba1-xkx)fe 2as2
Registro en:
Journal Of Physics: Conference Series. , v. 273, n. 1, p. - , 2011.
17426588
10.1088/1742-6596/273/1/012107
2-s2.0-79960720362
Autor
Urbano R.R.
Green E.L.
Moulton W.G.
Reyes A.P.
Kuhns P.L.
Bittar E.M.
Adriano C.
Pagliuso P.G.
Institución
Resumen
We report 75As Nuclear Magnetic Resonance (NMR) measurements in the high-Tc superconductor (Ba1-xKx)Fe 2As2 in the underdoped regime. A structural transition at Ts ≃110 K is followed by an antiferromagnetic (AFM) order at TN ≃102 K for our x = 0.16 single crystal [1]. Superconductivity (SC) also appears at Tc ≃20 K. We find that the ordered Fe moment (S) is reduced upon hole-doping. Both spectrum analysis and relaxation measurements indicate that pinned vortices are present below Tc and SC is coexisting with AFM fluctuations. © Published under licence by IOP Publishing Ltd. 273 1
Urbano R R, Green E L, Moulton W G et al 2010 arXiv:1005.3718v1 [cond-mat.supr-con]Kamihara, Y., Watanabe, T., Hirano, M., Hosono, H., (2008) J. Am. Chem. Soc., 130 (11), pp. 3296-3297 Rotter, M., Tegel, M., Johrendt, D., (2008) Phys. Rev. Lett., 101 (10), p. 107006 Ni, N., Tillman, M.E., Yan, J.-Q., (2008) Phys. Rev., 78 (21), p. 214515 Pratt, D.K., Tian, W., Kreyssig, A., (2009) Phys. Rev. Lett., 103 (8), p. 087001 Lester, C., Chu, J.-H., Analytis, J.G., (2009) Phys. Rev., 79 (14), p. 144523 Johnston D C 2010 arXiv:1005.4392v1 [cond-mat.supr-con]Park, J.T., Inosov, D.S., Niedermayer, Ch., (2009) Phys. Rev. Lett., 102 (11), p. 117006 Kitagawa, K., Katayama, N., Ohgushi, K., (2008) J. Phys. Soc. Jpn, 77 (11), p. 114709 Julien, M.H., Mayaffre, H., Horvatic, M., (2009) Europhys. Lett., 87 (3), p. 37001 Mukuda, H., Terasaki, N., Yashima, M., (2009) Physica, 469 (9-12), p. 559 Fukazawa, H., Yamazaki, T., Kondo, K., (2009) J. Phys. Soc. Japan., 78 (3), p. 033704 Nakai, Y., Ishida, K., Kamihara, Y., Hirano, M., Hosono, H., (2008) J. Phys. Soc. Japan., 78, p. 033704 Moriya, T., (1985) Spin Fluctuations in Itinerant Electron Magnetism, , Berlin, Springer-Verlag Bachman, H.N., Reyes, A.P., Mitrovic, V.F., (1998) Phys. Rev. Lett., 80 (8), p. 1726