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Title: Relationship Between Hole Density and Charge-Ordering Wave Vector in Sr14-xCaxCu24O41

Abstract

The distribution of holes in Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41} is revisited with semiempirical reanalysis of the x-ray absorption data and exact diagonalization cluster calculations. Another interpretation of the XAS data leads to much larger ladder hole densities than previously suggested. These new hole densities lead to a simple interpretation of the hole Wigner crystal recently reported with 1/3 and 1/5 wave vectors along the ladder. Our interpretation is consistent with paired holes in the rung of the ladders. Exact diagonalization results for a minimal model of the doped ladders suggest that the stabilization of spin structures consisting of 4 spins in a square plaquette as a result of resonance valence bond physics suppresses the hole crystal with a 1/4 wave vector.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
930500
Report Number(s):
BNL-80435-2008-JA
Journal ID: ISSN 1098-0121; TRN: US200904%%561
DOE Contract Number:
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B: Condensed Matter and Materials Physics; Journal Volume: 75; Journal Issue: 10
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; STRONTIUM OXIDES; CALCIUM OXIDES; COPPER OXIDES; HOLES; DISTRIBUTION; SPIN; national synchrotron light source

Citation Formats

Rusydi,A., Berciu, M., Abbamonte, P., Smadici, S., Eisaki, H., Fujimaki, Y., Uchida, S., Rubhausen, M., and Sawatsky, G. Relationship Between Hole Density and Charge-Ordering Wave Vector in Sr14-xCaxCu24O41. United States: N. p., 2007. Web. doi:10.1103/PhysRevB.75.104510.
Rusydi,A., Berciu, M., Abbamonte, P., Smadici, S., Eisaki, H., Fujimaki, Y., Uchida, S., Rubhausen, M., & Sawatsky, G. Relationship Between Hole Density and Charge-Ordering Wave Vector in Sr14-xCaxCu24O41. United States. doi:10.1103/PhysRevB.75.104510.
Rusydi,A., Berciu, M., Abbamonte, P., Smadici, S., Eisaki, H., Fujimaki, Y., Uchida, S., Rubhausen, M., and Sawatsky, G. Mon . "Relationship Between Hole Density and Charge-Ordering Wave Vector in Sr14-xCaxCu24O41". United States. doi:10.1103/PhysRevB.75.104510.
@article{osti_930500,
title = {Relationship Between Hole Density and Charge-Ordering Wave Vector in Sr14-xCaxCu24O41},
author = {Rusydi,A. and Berciu, M. and Abbamonte, P. and Smadici, S. and Eisaki, H. and Fujimaki, Y. and Uchida, S. and Rubhausen, M. and Sawatsky, G.},
abstractNote = {The distribution of holes in Sr{sub 14-x}Ca{sub x}Cu{sub 24}O{sub 41} is revisited with semiempirical reanalysis of the x-ray absorption data and exact diagonalization cluster calculations. Another interpretation of the XAS data leads to much larger ladder hole densities than previously suggested. These new hole densities lead to a simple interpretation of the hole Wigner crystal recently reported with 1/3 and 1/5 wave vectors along the ladder. Our interpretation is consistent with paired holes in the rung of the ladders. Exact diagonalization results for a minimal model of the doped ladders suggest that the stabilization of spin structures consisting of 4 spins in a square plaquette as a result of resonance valence bond physics suppresses the hole crystal with a 1/4 wave vector.},
doi = {10.1103/PhysRevB.75.104510},
journal = {Physical Review B: Condensed Matter and Materials Physics},
number = 10,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
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