%0 Generic %1 don08 %A Dong, J. %A Zhang, H. J. %A Xu, G. %A Li, Z. %A Li, G. %A Hu, W. Z. %A Wu, D. %A Chen, G. F. %A Dai, X. %A Luo, J. L. %A Fang, Z. %A Wang, N. L. %D 2008 %K experiment, fe-high-tc, lda, theory %T Competing Orders and Spin-Density-Wave Instability in La(O$_1-x$F$_x$)FeAs, arXiv:0803.3426 %U http://arxiv.org/abs/0803.3426 %X The interplay between different ordered phases, such as superconducting, charge or spin ordered phases, is of central interest in condensed matter physics. The very recent discovery of superconductivity with a remarkable T$_c$= 26 K in Fe-based oxypnictide La(O$_1-x$F$_x$)FeAs is a surprise to the scientific communityciteKamihara08. The pure LaOFeAs itself is not superconducting but shows an anomaly near 150 K in both resistivity and dc magnetic susceptibility. Here we provide combined experimental and theoretical evidences showing that the anomaly is caused by the spin-density-wave (SDW) instability, and electron-doping by F suppresses the SDW instability and recovers the superconductivity. Therefore, the La(O$_1-x$F$_x$)FeAs offers an exciting new system showing competing orders in layered compounds.

@misc{don08, abstract = {The interplay between different ordered phases, such as superconducting, charge or spin ordered phases, is of central interest in condensed matter physics. The very recent discovery of superconductivity with a remarkable T$_c$= 26 K in Fe-based oxypnictide La(O$_{1-x}$F$_x$)FeAs is a surprise to the scientific communitycite{Kamihara08}. The pure LaOFeAs itself is not superconducting but shows an anomaly near 150 K in both resistivity and dc magnetic susceptibility. Here we provide combined experimental and theoretical evidences showing that the anomaly is caused by the spin-density-wave (SDW) instability, and electron-doping by F suppresses the SDW instability and recovers the superconductivity. Therefore, the La(O$_{1-x}$F$_x$)FeAs offers an exciting new system showing competing orders in layered compounds.}, added-at = {2008-06-25T19:30:29.000+0200}, author = {Dong, J. and Zhang, H. J. and Xu, G. and Li, Z. and Li, G. and Hu, W. Z. and Wu, D. and Chen, G. F. and Dai, X. and Luo, J. L. and Fang, Z. and Wang, N. L.}, biburl = {https://www.bibsonomy.org/bibtex/27a5ff190b5d8f3b0e79b21c4f431613d/jgl}, citeulike-article-id = {2844773}, comment = {This nice paper predicted the correct magnetic structure of the parent compound}, eprint = {0803.3426}, interhash = {0dbd9d3645f8c021a6c9d24d4539536f}, intrahash = {7a5ff190b5d8f3b0e79b21c4f431613d}, keywords = {experiment, fe-high-tc, lda, theory}, month = Mar, posted-at = {2008-05-29 16:09:06}, priority = {2}, timestamp = {2008-06-25T19:30:36.000+0200}, title = {Competing Orders and Spin-Density-Wave Instability in La(O$_{1-x}$F$_x$)FeAs, arXiv:0803.3426}, url = {http://arxiv.org/abs/0803.3426}, year = 2008 }