Orbital-selective time-domain signature of nematicity dynamics in the charge-density-wave phase of La 1.65 Eu 0.2 Sr 0.15 CuO 4

Author:

Bluschke Martin12ORCID,Gupta Naman K.3ORCID,Jang Hoyoung45ORCID,Husain Ali. A.12,Lee Byungjune67ORCID,Kim Minjune12ORCID,Na MengXing12,Dos Remedios Brandon12,Smit Steef12,Moen Peter12,Park Sang-Youn4ORCID,Kim Minseok4,Jang Dogeun4,Choi Hyeongi4ORCID,Sutarto Ronny8ORCID,Reid Alexander H.9,Dakovski Georgi L.9,Coslovich Giacomo9,Nguyen Quynh L.910,Burdet Nicolas G.911,Lin Ming-Fu9,Revcolevschi Alexandre12,Park Jae-Hoon67,Geck Jochen1314,Turner Joshua J.911ORCID,Damascelli Andrea12ORCID,Hawthorn David G.3

Affiliation:

1. Quantum Matter Institute, University of British Columbia, Vancouver, BC V6T 1Z4, Canada

2. Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada

3. Department of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, Canada

4. X-ray Free Electron Laser Beamline Division, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 37673, Gyeongbuk, Republic of Korea

5. Photon Science Center, Pohang University of Science and Technology, Pohang 37673, Gyeongbuk, Republic of Korea

6. Max Planck - Pohang University of Science and Technology/Korea Research Initiative, Center for Complex Phase Materials, Pohang 37673, Republic of Korea

7. Department of Physics, Pohang University of Science and Technology, Pohang 37673, Republic of Korea

8. Canadian Light Source, Saskatoon, SK S7N 2V3, Canada

9. Linac Coherent Light Source, Stanford Linear Accelerator Center National Accelerator Laboratory, Menlo Park, CA 94025

10. Stanford PULSE Institute, Stanford University and Stanford Linear Accelerator Center National Accelerator Laboratory, Menlo Park, CA 94025

11. Stanford Institute for Materials and Energy Sciences, Stanford Linear Accelerator Center National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025

12. Institut de Chimie Moléculaire et des Matériaux d’Orsay, Université Paris-Saclay, Centre National de la Recherche Scientifique, UMR 8182, 91405 Orsay, France

13. Institute of Solid State and Materials Physics, Technische Universität Dresden, 01069 Dresden, Germany

14. Würzburg-Dresden Cluster of Excellence ct.qmat, Technische Universität Dresden, 01062 Dresden, Germany

Abstract

Understanding the interplay between charge, nematic, and structural ordering tendencies in cuprate superconductors is critical to unraveling their complex phase diagram. Using pump–probe time-resolved resonant X-ray scattering on the (0 0 1) Bragg peak at the Cu L 3 and O K resonances, we investigate nonequilibrium dynamics of Q a = Q b = 0 nematic order and its association with both charge density wave (CDW) order and lattice dynamics in La 1.65 Eu 0.2 Sr 0.15 CuO 4 . The orbital selectivity of the resonant X-ray scattering cross-section allows nematicity dynamics associated with the planar O 2 p and Cu 3 d states to be distinguished from the response of anisotropic lattice distortions. A direct time-domain comparison of CDW translational-symmetry breaking and nematic rotational-symmetry breaking reveals that these broken symmetries remain closely linked in the photoexcited state, consistent with the stability of CDW topological defects in the investigated pump fluence regime.

Funder

Alexander von Humboldt-Stiftung

Institute for Complex Adaptive Matter

Gordon and Betty Moore Foundation

Ministry of Science and ICT, South Korea

DOE | SC | Basic Energy Sciences

Deutsche Forschungsgemeinschaft

Publisher

Proceedings of the National Academy of Sciences

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