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Laser-Induced Charge-Density-Wave Transient Depinning in Chromium

V. L. R. Jacques, C. Laulhé, N. Moisan, S. Ravy, D. Le Bolloc'h
2016 Physical Review Letters  

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2016 pre-print arXiv:1612.05068v1 fatcat:w76l4x4tbzgwllzsnqqn34giue

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2017 accepted
arXiv:1612.05068v2 fatcat:ylmnfzgepfdlfdxkoxg2tvqyby
We report here on time-resolved x-ray diffraction measurements following femtosecond laser excitation in pure bulk chromium. Comparing the evolution of incommensurate charge-density-wave (CDW) and atomic lattice reflections, we show that, few nanoseconds after laser excitation, the CDW undergoes different structural changes than the atomic lattice. We give evidence for a transient CDW shear strain that breaks the lattice point symmetry. This strain is characteristic of sliding CDWs, as observed
more » ... in other incommensurate CDW systems, suggesting the laser-induced CDW sliding capability in 3D systems. This first evidence opens perspectives for unconventional laser-assisted transport of correlated charges.
doi:10.1103/physrevlett.117.156401 pmid:27768359 fatcat:ymsfu4f3qbhudnhabikqbicvf4
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V. L. R. Jacques, C. Laulhé, N. Moisan, S. Ravy, D. Le Bolloc'h. "Laser-Induced Charge-Density-Wave Transient Depinning in Chromium." Physical Review Letters 117.15 (2016)