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Title: Two- and three-dimensional incommensurate modulation in optimally-doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}

Abstract

X-ray scattering measurements on optimally doped single crystal samples of the high-temperature superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} reveal the presence of three distinct incommensurate charge modulations, each involving a roughly fivefold increase in the unit cell dimension along the b direction. The strongest scattering comes from the well known (H, K{+-}0.21, L) modulation and its harmonics. However, we also observe broad diffraction which peak up at the L values complementary to those which characterize the known modulated structure. These diffraction features correspond to correlation lengths of roughly a unit cell dimension, {xi}{sub c}{approx}20 A in the c direction, and of {xi}{sub b}{approx}185 A parallel to the incommensurate wave vector. We interpret these features as arising from three-dimensional incommensurate domains and the interfaces between them, respectively. In addition we investigate the recently discovered incommensurate modulations which peak up at (1/2, K{+-}0.21, L) and related wave vectors. Here we explicitly study the L dependence of this scattering and see that these charge modulations are two dimensional in nature with weak correlations on the scale of a bilayer thickness, and that they correspond to short-range, isotropic correlation lengths within the basal plane. We relate these new incommensurate modulations to the electronic nanostructuremore » observed in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} using STM topography.« less

Authors:
;  [1];  [1];  [2];  [3];  [4];  [5];  [6]
  1. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1 (Canada)
  2. (Canada)
  3. Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw (Poland)
  4. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
  5. Department of Physics, University of California, San Diego, California 92093 (United States)
  6. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
20788164
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 73; Journal Issue: 17; Other Information: DOI: 10.1103/PhysRevB.73.174505; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CORRELATIONS; CUPRATES; DOPED MATERIALS; HARMONICS; HIGH-TC SUPERCONDUCTORS; INTERFACES; MODULATION; MONOCRYSTALS; NANOSTRUCTURES; SCANNING TUNNELING MICROSCOPY; STRONTIUM COMPOUNDS; THREE-DIMENSIONAL CALCULATIONS; X-RAY DIFFRACTION

Citation Formats

Castellan, J. P., Dabkowska, H. A., Gaulin, B. D., Canadian Institute for Advanced Research, 180 Dundas St. W., Toronto, Ontario, Canada M5G 1Z8, Nabialek, A., Gu, G., Liu, X., and Islam, Z. Two- and three-dimensional incommensurate modulation in optimally-doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}. United States: N. p., 2006. Web. doi:10.1103/PHYSREVB.73.1.
Castellan, J. P., Dabkowska, H. A., Gaulin, B. D., Canadian Institute for Advanced Research, 180 Dundas St. W., Toronto, Ontario, Canada M5G 1Z8, Nabialek, A., Gu, G., Liu, X., & Islam, Z. Two- and three-dimensional incommensurate modulation in optimally-doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}. United States. doi:10.1103/PHYSREVB.73.1.
Castellan, J. P., Dabkowska, H. A., Gaulin, B. D., Canadian Institute for Advanced Research, 180 Dundas St. W., Toronto, Ontario, Canada M5G 1Z8, Nabialek, A., Gu, G., Liu, X., and Islam, Z. Mon . "Two- and three-dimensional incommensurate modulation in optimally-doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}". United States. doi:10.1103/PHYSREVB.73.1.
@article{osti_20788164,
title = {Two- and three-dimensional incommensurate modulation in optimally-doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}},
author = {Castellan, J. P. and Dabkowska, H. A. and Gaulin, B. D. and Canadian Institute for Advanced Research, 180 Dundas St. W., Toronto, Ontario, Canada M5G 1Z8 and Nabialek, A. and Gu, G. and Liu, X. and Islam, Z.},
abstractNote = {X-ray scattering measurements on optimally doped single crystal samples of the high-temperature superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} reveal the presence of three distinct incommensurate charge modulations, each involving a roughly fivefold increase in the unit cell dimension along the b direction. The strongest scattering comes from the well known (H, K{+-}0.21, L) modulation and its harmonics. However, we also observe broad diffraction which peak up at the L values complementary to those which characterize the known modulated structure. These diffraction features correspond to correlation lengths of roughly a unit cell dimension, {xi}{sub c}{approx}20 A in the c direction, and of {xi}{sub b}{approx}185 A parallel to the incommensurate wave vector. We interpret these features as arising from three-dimensional incommensurate domains and the interfaces between them, respectively. In addition we investigate the recently discovered incommensurate modulations which peak up at (1/2, K{+-}0.21, L) and related wave vectors. Here we explicitly study the L dependence of this scattering and see that these charge modulations are two dimensional in nature with weak correlations on the scale of a bilayer thickness, and that they correspond to short-range, isotropic correlation lengths within the basal plane. We relate these new incommensurate modulations to the electronic nanostructure observed in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} using STM topography.},
doi = {10.1103/PHYSREVB.73.1},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 17,
volume = 73,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2006},
month = {Mon May 01 00:00:00 EDT 2006}
}