TY - JOUR
T1 - High-Temperature Charge-Stripe Correlations in La1.675Eu0.2Sr0.125CuO4
AU - Wang, Qisi
AU - Horio, M.
AU - Von Arx, K.
AU - Shen, Y.
AU - John Mukkattukavil, D.
AU - Sassa, Y.
AU - Ivashko, O.
AU - Matt, C. E.
AU - Pyon, S.
AU - Takayama, T.
AU - Takagi, H.
AU - Kurosawa, T.
AU - Momono, N.
AU - Oda, M.
AU - Adachi, T.
AU - Haidar, S. M.
AU - Koike, Y.
AU - Tseng, Yu-Pei
AU - Zhang, W.
AU - Zhao, Jianming
AU - Kummer, K.
AU - Garcia-Fernandez, M.
AU - Zhou, Ke-Jin
AU - Christensen, Niels Bech
AU - Rønnow, H.M.
AU - Schmitt, T.
AU - Chang, J.
PY - 2020
Y1 - 2020
N2 - We use resonant inelastic x-ray scattering to investigate charge-stripe correlations in La1.675Eu0.2Sr0.125CuO4. By differentiating elastic from inelastic scattering, it is demonstrated that charge-stripe correlations precede both the structural lowerature tetragonal phase and the transport-defined pseudogap onset. The scattering peak amplitude from charge stripes decays approximately as T-2 towards our detection limit. The in-plane integrated intensity, however, remains roughly temperature independent. Therefore, although the incommensurability shows a remarkably large increase at high temperature, our results are interpreted via a single scattering constituent. In fact, direct comparison to other stripe-ordered compounds (La1.875Ba0.125CuO4, La1.475Nd0.4Sr0.125CuO4, and La1.875Sr0.125CuO4) suggests a roughly constant integrated scattering intensity across all these compounds. Our results therefore provide a unifying picture for the charge-stripe ordering in La-based cuprates. As charge correlations in La1.675Eu0.2Sr0.125CuO4 extend beyond the lowerature tetragonal and pseudogap phase, their emergence heralds a spontaneous symmetry breaking in this compound.
AB - We use resonant inelastic x-ray scattering to investigate charge-stripe correlations in La1.675Eu0.2Sr0.125CuO4. By differentiating elastic from inelastic scattering, it is demonstrated that charge-stripe correlations precede both the structural lowerature tetragonal phase and the transport-defined pseudogap onset. The scattering peak amplitude from charge stripes decays approximately as T-2 towards our detection limit. The in-plane integrated intensity, however, remains roughly temperature independent. Therefore, although the incommensurability shows a remarkably large increase at high temperature, our results are interpreted via a single scattering constituent. In fact, direct comparison to other stripe-ordered compounds (La1.875Ba0.125CuO4, La1.475Nd0.4Sr0.125CuO4, and La1.875Sr0.125CuO4) suggests a roughly constant integrated scattering intensity across all these compounds. Our results therefore provide a unifying picture for the charge-stripe ordering in La-based cuprates. As charge correlations in La1.675Eu0.2Sr0.125CuO4 extend beyond the lowerature tetragonal and pseudogap phase, their emergence heralds a spontaneous symmetry breaking in this compound.
U2 - 10.1103/PhysRevLett.124.187002
DO - 10.1103/PhysRevLett.124.187002
M3 - Journal article
C2 - 32441965
SN - 0031-9007
VL - 124
JO - Physical Review Letters
JF - Physical Review Letters
IS - 18
M1 - 187002
ER -