%0 Journal Article
%A Foerst, Michael
%A Tobey, R. I.
%A Bromberger, H.
%A Wilkins, S. B.
%A Khanna, V.
%A Caviglia, A. D.
%A Chuang, Y.-D.
%A Lee, W. S.
%A Schlotter, W. F.
%A Turner, J. J.
%A Minitti, M. P.
%A Krupin, O.
%A Xu, Z. J.
%A Wen, J. S.
%A Gu, G. D.
%A Dhesi, S. S.
%A Cavalleri, A.
%A Hill, J. P.
%T Melting of Charge Stripes in Vibrationally Driven La<sub>1.875</sub>Ba<sub>0.125</sub>CuO<sub>4</sub> : Assessing the Respective Roles of Electronic and Lattice Order in Frustrated Superconductors
%J Physical review letters
%V 112
%N 15
%@ 1079-7114
%C College Park, Md.
%I APS
%M PUBDB-2016-03173
%P 157002
%D 2014
%X We report femtosecond resonant soft x-ray diffraction measurements of the dynamics of the charge order and of the crystal lattice in nonsuperconducting, stripe-ordered La<sub>1.875</sub>Ba<sub>0.125</sub>CuO<sub>4</sub>. Excitation of the in-plane Cu-O stretching phonon with a midinfrared pulse has been previously shown to induce a transient superconducting state in the closely related compound La<sub>1.675</sub>Eu<sub>0.2</sub>Sr<sub>0.125</sub>CuO<sub>4</sub>. In La<sub>1.875</sub>Ba<sub>0.125</sub>CuO<sub>4</sub>, we find that the charge stripe order melts promptly on a subpicosecond time scale. Surprisingly, the low temperature tetragonal (LTT) distortion is only weakly reduced, reacting on significantly longer time scales that do not correlate with light-induced superconductivity. This experiment suggests that charge modulations alone, and not the LTT distortion, prevent superconductivity in equilibrium.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000334597300013
%$ pmid:24785066
%R 10.1103/PhysRevLett.112.157002
%U https://bib-pubdb1.desy.de/record/307319