振动驱动La1.875 Ba 0.125 CuO 4中电荷带的熔化：电子序和晶格序在阻挫超导体中各自作用的评估
Melting of Charge Stripes in Vibrationally Driven La1.875Ba0.125CuO4: Assessing the Respective Roles of Electronic and Lattice Order in Frustrated Superconductors
M. Först, R. I. Tobey, H. Bromberger, S. B. Wilkins, V. Khanna, A. D. Caviglia, Y. -D. Chuang, W. S. Lee, W. F. Schlotter, J. J. Turner, M. P. Minitti, O. Krupi… 展开作者
M. Först, R. I. Tobey, H. Bromberger, S. B. Wilkins, V. Khanna, A. D. Caviglia, Y. -D. Chuang, W. S. Lee, W. F. Schlotter, J. J. Turner, M. P. Minitti, O. Krupin, Z. J. Xu, J. S. Wen, G. D. Gu, S. S. Dhesi, A. Cavalleri, J. P. Hill
We report femtosecond resonant soft X-ray diffraction measurements of the dynamics of the charge order and of the crystal lattice in non-superconducting, stripe-ordered La1.875Ba0.125CuO4. Excitation of the in-plane Cu-O stretching phonon with a mid-infrared pulse has been previously shown to induce a transient superconducting state in the closely related compound La1.675Eu0.2Sr0.125CuO4. In La1.875Ba0.125CuO4, we find that the charge stripe order melts promptly on a sub-picosecond time scale. Surprisingly, the low temperature tetragonal 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.
Photodynamic melting of phase-reversed charge stripes and enhanced condensation
Beijing Computational Science Research Center（北京计算科学研究中心）；Department of Physics and Astronomy, University of California, Davis（加州大学戴维斯分校物理与天文学系）；Department of Physics, University of Houston（休斯顿大学物理系）；Texas Center for Superconductivity, University of Houston（休斯顿大学德州超导中心）
Comment on "Light-induced melting of competing stripe orders without introducing superconductivity in La$_{1.875}$Ba$_{0.125}$CuO$_4$" (arXiv:2306.07869v1)
Direct High-Magnetic-Field Coupling to Stripe Order in a Cuprate Superconductor
Universität Zürich（苏黎世大学）；ESRF, The European Synchrotron（欧洲同步辐射装置）；Paul Scherrer Institut（保罗谢尔研究所）；University of Duisburg–Essen（杜伊斯堡-埃森大学）；Technische Universität Dresden（德累斯顿工业大学）；University of Augsburg（奥格斯堡大学）；Technical University of Munich（慕尼黑工业大学）；Seoul National University（首尔国立大学）
