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Title: Giant photoinduced lattice distortion in oxygen vacancy ordered SrCoO 2.5 thin films

Journal Article · · Physical Review B
ORCiD logo [1];  [2];  [1];  [1];  [3];  [4];  [2];  [3];  [4];  [4];  [1];  [5]
  1. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of High Energy Physics
  2. Univ. de Liège (Belgium)
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  4. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics
  5. Zhengzhou Univ. (China)

Despite the progress in understanding the formation and migration of oxygen vacancies in strongly correlated complex oxides, few studies focused on the dynamic behaviors of the oxygen vacancies under the transient and non-equilibrium states. Here we report a series of multi-timescale ultrafast X-ray diffraction experiments using picosecond synchrotron and femtosecond table-top X-ray sources to monitor the structural dynamics in oxygen-vacancy-ordered SrCoO2.5 thin films excited by photons. A giant photoinduced structure distortion in c-axis direction (with strain $Δc/c$ > 1%) was observed, higher than any previously reported data in the other transition metal oxide films. The femtosecond X-ray diffraction reveals the formation and propagation of the coherent acoustic phonons, indicating an instantaneous and a much larger photoinduced stress within the first 100 ps. Density Function Theory reproduced the photostrictive responses and the strong dependence on excitation wavelength as observed in the experiment. The combined experimental and theoretic results demonstrate that the photoexcitation of bonding to antibonding state via charge transfer is the dominant mechanism in the SrCoO2.5 thin films distinct from the depolarization effect by photoinduced carriers in the other perovskite oxides.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES); Australian Research Council (ARC); Fund for Scientific Research (F.R.S.–FNRS); theWalloon Region
Grant/Contract Number:
AC02-06CH11357; 11574365; 11905242; 2.5020.1; 1117545
OSTI ID:
1576749
Journal Information:
Physical Review B, Vol. 100, Issue 14; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

References (40)

Topotactic Phase Transformation of the Brownmillerite SrCoO 2.5 to the Perovskite SrCoO 3- δ journal July 2013
Manipulating the Structural and Electronic Properties of Epitaxial SrCoO 2.5 Thin Films by Tuning the Epitaxial Strain journal March 2018
Ultrafast Photovoltaic Response in Ferroelectric Nanolayers journal February 2012
Reversal of the Lattice Structure in SrCoO x Epitaxial Thin Films Studied by Real-Time Optical Spectroscopy and First-Principles Calculations journal August 2013
Time-Resolved in Situ Studies of Oxygen Intercalation into SrCoO2.5, Performed by Neutron Diffraction and X-ray Absorption Spectroscopy journal October 2006
Localized Excited Charge Carriers Generate Ultrafast Inhomogeneous Strain in the Multiferroic BiFeO 3 journal March 2014
Ultrafast lattice response of photoexcited thin films studied by X-ray diffraction journal November 2014
Photostrictive materials journal March 2015
Photostriction in Ferroelectrics from Density Functional Theory journal June 2016
Improper ferroelectricity in perovskite oxide artificial superlattices journal April 2008
Generation of Projector Augmented-Wave atomic data: A 71 element validated table in the XML format journal April 2014
Reversible redox reactions in an epitaxially stabilized SrCoOx oxygen sponge journal August 2013
Electronic Origin of Ultrafast Photoinduced Strain in BiFeO 3 journal January 2013
Ab initio approach to photostriction in classical ferroelectric materials journal July 2017
Ultrafast reciprocal-space mapping with a convergent beam journal August 2013
Physical mechanisms of coherent acoustic phonons generation by ultrafast laser action journal February 2015
Restoring the Density-Gradient Expansion for Exchange in Solids and Surfaces journal April 2008
Density-functional theory and strong interactions: Orbital ordering in Mott-Hubbard insulators journal August 1995
Strong lattice correlation of non-equilibrium quasiparticles in a pseudospin-1/2 Mott insulator Sr2IrO4 journal January 2016
Ultrafast Giant Photostriction of Epitaxial Strontium Iridate Film with Superior Endurance journal November 2018
Layer specific observation of slow thermal equilibration in ultrathin metallic nanostructures by femtosecond X-ray diffraction journal August 2018
ABINIT: First-principles approach to material and nanosystem properties journal December 2009
Electronic Structure Evolution of SrCoO x during Electrochemically Driven Phase Transition Probed by in Situ X-ray Spectroscopy journal October 2016
Strain-induced magnetic phase transition in SrCoO 3 δ thin films journal April 2015
Voltage-Controlled Topotactic Phase Transition in Thin-Film SrCoO x Monitored by In Situ X-ray Diffraction journal January 2016
Electronic and ionic transport properties and other physical aspects of perovskites journal September 2004
Electronic Structure book January 2004
A charge density wave-like instability in a doped spin–orbit-assisted weak Mott insulator journal January 2017
Nanoscale excitonic photovoltaic mechanism in ferroelectric BiFeO 3 thin films journal August 2018
Surface generation and detection of phonons by picosecond light pulses journal September 1986
Note: A novel normalization scheme for laser-based plasma x-ray sources journal September 2014
Design principles for oxygen-reduction activity on perovskite oxide catalysts for fuel cells and metal–air batteries journal June 2011
Implementation of the projector augmented-wave method in the ABINIT code: Application to the study of iron under pressure journal April 2008
Electric-field control of tri-state phase transformation with a selective dual-ion switch journal May 2017
Pressure-driven semiconductor-semiconductor transition and its structural origin in oxygen vacancy ordered SrCo O 2.5 journal January 2017
Layer specific observation of slow thermal equilibration in ultrathin metallic nanostructures by femtosecond X-ray diffraction text January 2019
Electronic Structure book September 2020
Generation of Projector Augmented-Wave atomic data: a 71 elements validated table in the XML format text January 2013
A charge density wave-like instability in a doped spin-orbit-assisted weak Mott insulator text January 2017
Layer specific observation of slow thermal equilibration in ultrathin metallic nanostructures by femtosecond x-ray diffraction text January 2018

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