%0 Journal Article %1 Zabolotnyy2009 %A Zabolotnyy, V. B. %A Inosov, D. S. %A Evtushinsky, D. V. %A Koitzsch, A. %A Kordyuk, A. A. %A Sun, G. L. %A Park, J. T. %A Haug, D. %A Hinkov, V. %A Boris, A. V. %A Lin, C. T. %A Knupfer, M. %A Yaresko, A. N. %A Buchner, B. %A Varykhalov, A. %A Follath, R. %A Borisenko, S. V. %D 2009 %I Macmillan Publishers Limited. All rights reserved %J Nature %K imported %N 7229 %P 569--572 %T $(\pi,\pi)$ electronic order in iron arsenide superconductors %U http://dx.doi.org/10.1038/nature07714 %V 457 %X The distribution of valence electrons in metals usually follows the symmetry of the underlying ionic lattice. Modulations of this distribution often occur when those electrons are not stable with respect to a new electronic order, such as spin or charge density waves. Electron density waves have been observed in many families of superconductors1, 2, 3, and are often considered to be essential for superconductivity to exist4. Recent measurements5, 6, 7, 8, 9 seem to show that the properties of the iron pnictides10, 11 are in good agreement with band structure calculations that do not include additional ordering, implying no relation between density waves and superconductivity in these materials12, 13, 14, 15. Here we report that the electronic structure of Ba1-xKxFe2As2 is in sharp disagreement with those band structure calculations12, 13, 14, 15, and instead reveals a reconstruction characterized by a (, ) wavevector. This electronic order coexists with superconductivity and persists up to room temperature (300 K).

@article{Zabolotnyy2009, abstract = {The distribution of valence electrons in metals usually follows the symmetry of the underlying ionic lattice. Modulations of this distribution often occur when those electrons are not stable with respect to a new electronic order, such as spin or charge density waves. Electron density waves have been observed in many families of superconductors1, 2, 3, and are often considered to be essential for superconductivity to exist4. Recent measurements5, 6, 7, 8, 9 seem to show that the properties of the iron pnictides10, 11 are in good agreement with band structure calculations that do not include additional ordering, implying no relation between density waves and superconductivity in these materials12, 13, 14, 15. Here we report that the electronic structure of Ba1-xKxFe2As2 is in sharp disagreement with those band structure calculations12, 13, 14, 15, and instead reveals a reconstruction characterized by a (, ) wavevector. This electronic order coexists with superconductivity and persists up to room temperature (300 K).}, added-at = {2010-11-06T00:14:39.000+0100}, author = {Zabolotnyy, V. B. and Inosov, D. S. and Evtushinsky, D. V. and Koitzsch, A. and Kordyuk, A. A. and Sun, G. L. and Park, J. T. and Haug, D. and Hinkov, V. and Boris, A. V. and Lin, C. T. and Knupfer, M. and Yaresko, A. N. and Buchner, B. and Varykhalov, A. and Follath, R. and Borisenko, S. V.}, biburl = {https://www.bibsonomy.org/bibtex/28c174c1bac647499d13324bfb2a9f533/nplumb}, comment = {10.1038/nature07714}, file = {:C\:\\Users\\Nick\\Documents\\Papers\\Zabolotnyy et al. - (pi,pi) electronic order in iron arsenide superconductors.pdf:PDF}, interhash = {dcb3aab7bf00108d52847b6b3ffd58fa}, intrahash = {8c174c1bac647499d13324bfb2a9f533}, issn = {0028-0836}, journal = {Nature}, keywords = {imported}, month = jan, number = 7229, owner = {Nick}, pages = {569--572}, publisher = {Macmillan Publishers Limited. All rights reserved}, timestamp = {2010-11-06T00:14:44.000+0100}, title = {$(\pi,\pi)$ electronic order in iron arsenide superconductors}, url = {http://dx.doi.org/10.1038/nature07714}, volume = 457, year = 2009 }