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Systematic 63 Cu NQR study of the stripe phase in La 1.6 - x Nd 0.4 Sr x CuO 4 for 0.07 <~ x <~ 0.25

Systematic 63 Cu NQR study of the stripe phase in La 1.6 - x Nd 0.4 Sr x CuO 4 for 0.07 <~ x <~ 0.25 We demonstrate that the integrated intensity of 63 Cu nuclear quadrupole resonance (NQR) in La 1.6 - x Nd 0.4 Sr x CuO 4 decreases dramatically below the charge-stripe ordering temperature T charge . Comparison with neutron and x-ray scattering indicates that the wipeout fraction F ( T ) (i.e., the missing fraction of the integrated intensity of the NQR signal) represents the charge-stripe order parameter. The systematic study reveals bulk charge-stripe order throughout the superconducting region 0.07 <~ x <~ 0.25. As a function of the reduced temperature t ≡ T / T charge , the temperature dependence of F ( t ) is sharpest for the hole concentration x ∼ 1 / 8 , indicating that x ∼ 1 / 8 is the optimum concentration for stripe formation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Systematic 63 Cu NQR study of the stripe phase in La 1.6 - x Nd 0.4 Sr x CuO 4 for 0.07 <~ x <~ 0.25

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Publisher
American Physical Society (APS)
Copyright
Copyright © 1999 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.60.15345
Publisher site
See Article on Publisher Site

Abstract

We demonstrate that the integrated intensity of 63 Cu nuclear quadrupole resonance (NQR) in La 1.6 - x Nd 0.4 Sr x CuO 4 decreases dramatically below the charge-stripe ordering temperature T charge . Comparison with neutron and x-ray scattering indicates that the wipeout fraction F ( T ) (i.e., the missing fraction of the integrated intensity of the NQR signal) represents the charge-stripe order parameter. The systematic study reveals bulk charge-stripe order throughout the superconducting region 0.07 <~ x <~ 0.25. As a function of the reduced temperature t ≡ T / T charge , the temperature dependence of F ( t ) is sharpest for the hole concentration x ∼ 1 / 8 , indicating that x ∼ 1 / 8 is the optimum concentration for stripe formation.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Dec 1, 1999

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