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  Dimensional Crossover in a Charge Density Wave Material Probed by Angle-Resolved Photoemission Spectroscopy

Nicholson, C., Berthod, C., Puppin, M., Berger, H., Wolf, M., Hoesch, M., et al. (2017). Dimensional Crossover in a Charge Density Wave Material Probed by Angle-Resolved Photoemission Spectroscopy. Physical Review Letters, 118(20): 206401, pp. 1-5. doi:10.1103/PhysRevLett.118.206401.

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PhysRevLett.118.206401.pdf (Publisher version), 970KB
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PhysRevLett.118.206401.pdf
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 Creators:
Nicholson, Christopher1, Author           
Berthod, C.2, Author
Puppin, Michele1, Author           
Berger, H.3, Author
Wolf, Martin1, Author           
Hoesch, M.4, Author
Monney, Monney5, Author
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest-Ansermet, 1211 Geneva, Switzerland, ou_persistent22              
3Institut de la Matière Complexe, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland, ou_persistent22              
4Diamond Light Source, Harwell Campus, Didcot OX11 0DE Oxfordshire, United Kingdom, ou_persistent22              
5Institute of Physics, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland, ou_persistent22              

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 Abstract: High-resolution angle-resolved hotoemission spectroscopy data reveal evidence of a crossover from one-dimensional (1D) to three-dimensional (3D) behavior in the prototypical charge density wave (CDW)
material NbSe3. In the low-temperature 3D regime, gaps in the electronic structure are observed due to
two incommensurate CDWs, in agreement with x-ray diffraction and electronic-structure calculations. At higher temperatures we observe a spectral weight depletion that approaches the power-law behavior
expected in one dimension. From the warping of the quasi-1D Fermi surface at low temperatures, we extract the energy scale of the dimensional crossover. This is corroborated by a detailed analysis of the
density of states, which reveals a change in dimensional behavior dependent on binding energy. Our results offer an important insight into the dimensionality of excitations in quasi-1D materials.

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Language(s): eng - English
 Dates: 2016-10-142017-05-182017-05-19
 Publication Status: Issued
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.118.206401
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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: 5 Volume / Issue: 118 (20) Sequence Number: 206401 Start / End Page: 1 - 5 Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1