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  Dynamical Stability Limit for the Charge Density Wave in K0.3MoO3

Mankowsky, R., Liu, B., Rajasekaran, S., Liu, H., Mou, D., Zhou, X. J., et al. (2017). Dynamical Stability Limit for the Charge Density Wave in K0.3MoO3. Physical Review Letters, 118: 116402. doi:10.1103/PhysRevLett.118.116402.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-8013-D Version Permalink: http://hdl.handle.net/21.11116/0000-0004-8FE0-E
Genre: Journal Article

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mankowsky-PhyRL-118-116402-2017.pdf (Publisher version), 506KB
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2017
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© American Physical Society

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https://arxiv.org/abs/1702.05897 (Preprint)
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 Creators:
Mankowsky, R.1, Author              
Liu, Biaolong1, Author              
Rajasekaran, S.1, Author              
Liu, Haiyun2, Author              
Mou, D.3, Author
Zhou, X. J.3, Author
Merlin, R.4, Author
Foerst, M.1, Author              
Cavalleri, A.1, 5, Author              
Affiliations:
1Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
2Extreme Timescales, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938294              
3Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing , China, ou_persistent22              
4Department of Physics, University of Michigan, Ann Arbor, Michigan, USA, ou_persistent22              
5Depa rtment of Physics, Oxford University, Clar endon Laboratory, Oxford , UK, ou_persistent22              

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 Abstract: We study the response of the one-dimensional charge density wave in K0.3MoO3 to different types of excitation with femtosecond optical pulses. We compare the response to direct excitation of the lattice at mid-infrared frequencies with that to the injection of quasi-particles across the low-energy charge density wave gap and to charge transfer excitations in the near infrared. For all three cases, we observe a fluence threshold above which the amplitude-mode oscillation frequency is softened and the mode becomes increasingly damped. We show that all the data can be collapsed onto a universal curve in which the melting of the charge density wave occurs abruptly at a critical lattice excursion. These data highlight the existence of a universal stability limit for a charge density wave, reminiscent of the empirical Lindemann criterion for the stability of a crystal lattice.

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Language(s): eng - English
 Dates: 2017-02-202016-12-122017-03-152017-03-15
 Publication Status: Published in print
 Pages: 5
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: arXiv: https://arxiv.org/abs/1702.05897
DOI: 10.1103/PhysRevLett.118.116402
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 118 Sequence Number: 116402 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: /journals/resource/954925433406_1