Evidence for photoinduced sliding of the charge-order condensate in
Journal Article
·
· Physical Review. B
- Univ. of Illinois, Urbana, IL (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- National Inst. of Standards and Technology (NIST), Boulder, CO (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
In this study, we use femtosecond resonant soft x-ray scattering to measure the ultrafast optical melting of charge-order correlations in La1.875Ba0.125CuO4. By analyzing both the energy-resolved and the energy-integrated order-parameter dynamics, we find evidence of a short-lived nonequilibrium state, the features of which are compatible with a sliding charge-density wave coherently set in motion by the pump. This transient state exhibits shifts in both the quasielastic line energy and its wave vector, as expected from a classical Doppler effect. The wave-vector change is indeed found to directly follow the pump propagation direction. Finally, these results demonstrate the existence of sliding charge-order behavior in an unconventional charge-density wave system and underscore the power of ultrafast optical excitation as a tool to coherently manipulate electronic condensates.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Linac Coherent Light Source (LCLS); Univ. of Illinois at Urbana-Champaign, IL (United States)
- Sponsoring Organization:
- Alexander von Humboldt Foundation; Gordon and Betty Moore Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-76SF00515; FG02-06ER46285; SC0012704
- OSTI ID:
- 1580263
- Alternate ID(s):
- OSTI ID: 1608458
OSTI ID: 1958816
- Report Number(s):
- BNL--212430-2019-JAAM
- Journal Information:
- Physical Review. B, Journal Name: Physical Review. B Journal Issue: 20 Vol. 100; ISSN 2469-9950; ISSN PRBMDO
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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