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  Surface-enhanced charge-density-wave instability in underdoped Bi2Sr2-xLaxCuO6+δ

Rosen, J. A., Comin, R., Levy, G., Fournier, D., Zhu, Z. H., Ludbrook, B., et al. (2013). Surface-enhanced charge-density-wave instability in underdoped Bi2Sr2-xLaxCuO6+δ. Nature Communications, 4: 1977.

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Rosen, J. A., Author
Comin, R., Author
Levy, G., Author
Fournier, D., Author
Zhu, Z. H., Author
Ludbrook, B., Author
Veenstra, C. N., Author
Nicolaou, A., Author
Wong, D., Author
Dosanjh, P., Author
Yoshida, Y., Author
Eisaki, H., Author
Blake, G. R., Author
White, F., Author
Palstra, T. T. M., Author
Sutarto, R., Author
He, F., Author
Pereira, A. F., Author
Lu, Y., Author
Keimer, B.1, Author           
Sawatzky, G., AuthorPetaccia, L., AuthorDamascelli, A.1, Author            more..
Affiliations:
1Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370480              

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 Abstract: Neutron and X-ray scattering experiments have provided mounting evidence for spin and charge ordering phenomena in underdoped cuprates. These range from early work on stripe correlations in Nd-LSCO to the latest discovery of charge-density-waves in YBa2Cu3O6 + x. Both phenomena are characterized by a pronounced dependence on doping, temperature and an externally applied magnetic field. Here, we show that these electron-lattice instabilities exhibit also a previously unrecognized bulk-surface dichotomy. Surface-sensitive electronic and structural probes uncover a temperature-dependent evolution of the CuO2 plane band dispersion and apparent Fermi pockets in underdoped Bi-2 Sr2-x La-x CuO6 + delta (Bi2201), which is directly associated with an hitherto-undetected strong temperature dependence of the incommensurate superstructure periodicity below 130 K. In stark contrast, the structural modulation revealed by bulk-sensitive probes is temperature-independent. These findings point to a surface-enhanced incipient charge-density-wave instability, driven by Fermi surface nesting. This discovery is of critical importance in the interpretation of single-particle spectroscopy data, and establishes the surface of cuprates and other complex oxides as a rich playground for the study of electronically soft phases.

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Language(s): eng - English
 Dates: 2013
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Internal
 Identifiers: eDoc: 672314
ISI: 000323712200003
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Title: Nature Communications
Source Genre: Journal
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Pages: - Volume / Issue: 4 Sequence Number: 1977 Start / End Page: - Identifier: ISSN: 2041-1723