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  Anomalous oxygen-isotope effect on the in-plane far-infrared conductivity of detwinned YBa2Cu316,18O6.9

Bernhard, C., Holden, T., Boris, A. V., Kovaleva, N. N., Pimenov, A. V., Humlíček, J., et al. (2004). Anomalous oxygen-isotope effect on the in-plane far-infrared conductivity of detwinned YBa2Cu316,18O6.9. Physical Review B, 69(5): 052502.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-FFC7-3 Version Permalink: https://hdl.handle.net/21.11116/0000-000E-FFC8-2
Genre: Journal Article

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 Creators:
Bernhard, C.1, Author           
Holden, T.1, Author           
Boris, A. V.1, Author           
Kovaleva, N. N.1, Author           
Pimenov, A. V.1, Author           
Humlíček, J., Author
Ulrich, C.1, 2, Author           
Lin, C. T.3, Author           
Tallon, J. L., Author
Affiliations:
1Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370480              
2Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370497              
3Scientific Facility Crystal Growth (Masahiko Isobe), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370496              

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 Abstract: We observe a large and anomalous oxygen isotope effect on the a-axis
component of the far-infrared electronic response of detwinned
(YBa2Cu3O6.9)-O-16,18. For O-18 a pronounced low-energy electronic mode
(LEM) appears around 240 cm(-1). This a-axis LEM exhibits a clear aging
effect, after 1 y it is shifted to 190 cm(-1). For O-16 we cannot
resolve a corresponding a-axis LEM above 120 cm(-1). We interpret the
LEM in terms of a collective electronic mode that is pinned by
"isotopic defects," i.e., by the residual O-16 in the matrix of O-18.

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Language(s): eng - English
 Dates: 2004
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 192792
ISI: 000220001700011
 Degree: -

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Title: Physical Review B
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 69 (5) Sequence Number: 052502 Start / End Page: - Identifier: ISSN: 1098-0121