Coexistence of the spin-density-wave and superconductivity in the $\rm Ba_{1-x}K_xFe_2As_2$

11:15 AM–2:03 PM, Tuesday, March 17, 2009
Room: 405

Sponsoring Unit: DMP
Chair: Jeff Lynn, National Institute of Standards and Technology

Abstract ID: BAPS.2009.MAR.J35.10

Abstract: J35.00010 : Coexistence of the spin-density-wave and superconductivity in the $\rm Ba_{1-x}K_xFe_2As_2$*

1:03 PM–1:15 PM

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Authors:

Yang Ren
(APS, Argonne National Laboratory)

H. Chen
(University of Science and Technology of China)

Y. Qiu
(NIST Center for Neutron Research, NIST \& Univ. of Maryland)

Wei Bao
(Los Alamos National Laboratory)

R.H. Liu
(University of Science and Technology of China)

G. Wu
(University of Science and Technology of China)

T. Wu
(University of Science and Technology of China)

Y.L. Xie
(University of Science and Technology of China)

X.F. Wang
(University of Science and Technology of China)

Q. Huang
(NIST for Neutron Research, NIST)

X.H. Chen
(University of Science and Technology of China)

The relation between the spin-density-wave (SDW) and superconducting order is a central topic in current research on the FeAs-based high $T_c$ superconductors. Conflicting results exist in the LaFeAs(O,F)-class of materials, for which whether the SDW and superconductivity are mutually exclusive or they can coexist has not been settled. Here we show that for the $\rm (Ba,K)Fe_2As_2$ system, the SDW and superconductivity can coexist in an extended range of compositions. The availability of single crystalline samples and high value of the energy gaps would make the materials a model system to investigate the high $T_c$ ferropnictide superconductivity. [arXiv:0807.3950 (2008)]

*Work at APS/ANL was supported by U.S. DOE/OS/BES, under Contract No. DE-AC02-06CH11357; at USTC by National Science Foundation of China \& Ministry of Science and Technology of China \& National Basic Research Program of china; at LANL by U.S. DOE/OS/BES.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2009.MAR.J35.10

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Bulletin of the American Physical Society

2009 APS March Meeting

Volume 54, Number 1

Monday–Friday, March 16–20, 2009; Pittsburgh, Pennsylvania

Session J35: Focus Session: Iron Pnictides and Other Novel Superconductors VIII: Magnetism (Experiment)

Abstract: J35.00010 : Coexistence of the spin-density-wave and superconductivity in the $\rm Ba_{1-x}K_xFe_2As_2$*

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