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Title: Effects of charge inhomogeneities on elementary excitations in La 2-xSr xCuO₄

Abstract

Purely local experimental probes of many copper oxide superconductors show that their electronic states are inhomogeneous in real space. For example, scanning tunneling spectroscopic imaging shows strong variations in real space, and according to nuclear quadrupole resonance (NQR) studies, the charge distribution in the bulk varies on the nanoscale. However, the analysis of the experimental results utilizing spatially averaged probes often ignores this fact. We have performed a detailed investigation of the doping dependence of the energy and linewidth of the zone-boundary Cu-O bond-stretching vibration in La 2-xSr xCuO₄ by inelastic neutron scattering. Both our results as well as previously reported angle-dependent momentum widths of the electronic spectral function detected by angle-resolved photoemission can be reproduced by including the same distribution of local environments extracted from the NQR analysis.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1098383
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Volume: 84 Journal Issue: 21; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Park, S. R., Hamann, A., Pintschovius, L., Lamago, D., Khaliullin, G., Fujita, M., Yamada, K., Gu, G. D., Tranquada, J. M., and Reznik, D.. Effects of charge inhomogeneities on elementary excitations in La2-xSrxCuO₄. United States: N. p., 2011. Web. doi:10.1103/PhysRevB.84.214516.
Park, S. R., Hamann, A., Pintschovius, L., Lamago, D., Khaliullin, G., Fujita, M., Yamada, K., Gu, G. D., Tranquada, J. M., & Reznik, D.. Effects of charge inhomogeneities on elementary excitations in La2-xSrxCuO₄. United States. doi:10.1103/PhysRevB.84.214516.
Park, S. R., Hamann, A., Pintschovius, L., Lamago, D., Khaliullin, G., Fujita, M., Yamada, K., Gu, G. D., Tranquada, J. M., and Reznik, D.. Mon . "Effects of charge inhomogeneities on elementary excitations in La2-xSrxCuO₄". United States. doi:10.1103/PhysRevB.84.214516.
@article{osti_1098383,
title = {Effects of charge inhomogeneities on elementary excitations in La2-xSrxCuO₄},
author = {Park, S. R. and Hamann, A. and Pintschovius, L. and Lamago, D. and Khaliullin, G. and Fujita, M. and Yamada, K. and Gu, G. D. and Tranquada, J. M. and Reznik, D.},
abstractNote = {Purely local experimental probes of many copper oxide superconductors show that their electronic states are inhomogeneous in real space. For example, scanning tunneling spectroscopic imaging shows strong variations in real space, and according to nuclear quadrupole resonance (NQR) studies, the charge distribution in the bulk varies on the nanoscale. However, the analysis of the experimental results utilizing spatially averaged probes often ignores this fact. We have performed a detailed investigation of the doping dependence of the energy and linewidth of the zone-boundary Cu-O bond-stretching vibration in La2-xSrxCuO₄ by inelastic neutron scattering. Both our results as well as previously reported angle-dependent momentum widths of the electronic spectral function detected by angle-resolved photoemission can be reproduced by including the same distribution of local environments extracted from the NQR analysis.},
doi = {10.1103/PhysRevB.84.214516},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 21,
volume = 84,
place = {United States},
year = {2011},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevB.84.214516

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Cited by: 4 works
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