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  THz-Frequency Modulation of the Hubbard U in an Organic Mott Insulator

Singla, R., Cotugno, G., Kaiser, S., Först, M., Mitrano, M., Liu, H., et al. (2015). THz-Frequency Modulation of the Hubbard U in an Organic Mott Insulator. Physical Review Letters, 115(18): 187401. doi:10.1103/PhysRevLett.115.187401.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-F2DC-B Version Permalink: http://hdl.handle.net/21.11116/0000-0003-58CE-3
Genre: Journal Article

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 Creators:
Singla, Rashmi1, Author              
Cotugno, Giovanni1, 2, Author              
Kaiser, Stefan1, 3, 4, Author              
Först, Michael1, Author              
Mitrano, Matteo1, Author              
Liu, Haiyun1, Author              
Cartella, Andrea1, Author              
Manzoni, Cristian1, 5, Author              
Okamoto, H.6, Author
Hasegawa, T.7, Author
Clark, S. R.2, 8, Author
Jaksch, D.2, 9, Author
Cavalleri, Andrea1, 2, 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              
2Department of Physics, Oxford University, Clarendon Laboratory, ou_persistent22              
3Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany, ou_persistent22              
44th Physics Institute, University of Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany, ou_persistent22              
5IFN-CNR, Dipartimento di Fisica-Politecnico di Milano, Milan, Italy, ou_persistent22              
6Department of Advanced Material Science, University of Tokyo, Chiba 277-8561, Japan, ou_persistent22              
7National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8562, Japan, ou_persistent22              
8Department of Physics, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom, ou_persistent22              
9Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore, ou_persistent22              

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Free keywords: PACS numbers: 78.30.-j, 71.30.+h, 78.40.Me, 78.47.jh
 Abstract: We use midinfrared pulses with stable carrier-envelope phase offset to drive molecular vibrations in the charge transfer salt ET−F2TCNQ, a prototypical one-dimensional Mott insulator. We find that the Mott gap, which is probed resonantly with 10 fs laser pulses, oscillates with the pump field. This observation reveals that molecular excitations can coherently perturb the electronic on-site interactions (Hubbard U) by changing the local orbital wave function. The gap oscillates at twice the frequency of the vibrational mode, indicating that the molecular distortions couple quadratically to the local charge density.

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Language(s): eng - English
 Dates: 2015-07-242014-09-032015-10-292015-10-30
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.115.187401
arXiv: 1409.1088
 Degree: -

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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: 115 (18) Sequence Number: 187401 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: /journals/resource/954925433406_1