Phys. Rev. Lett. 87, 237201 (2001) [4 pages]

First Time Determination of the Microscopic Structure of a Stripe Phase: Low Temperature NMR in La₂NiO_4.17

Abstract

References

Citing Articles (5)

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I. M. Abu-Shiekah, O. Bakharev, and H. B. Brom
Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands

J. Zaanen
Instituut Lorentz for Theoretical Physics, Leiden University, P.O. Box 9506, 2300 RA Leiden, The Netherlands

Received 17 August 2001; published 15 November 2001

The experimental observations of stripes in superconducting cuprates and insulating nickelates clearly show the modulation in charge and spin density. However, these have proven to be rather insensitive to the harmonic structure and (site or bond) ordering. Using ¹³⁹La NMR in La₂NiO_4+δ with δ = 0.17, we show that in the 1/3 hole doped nickelate below the freezing temperature the stripes are strongly solitonic and site ordered with Ni³⁺ ions carrying S = 1/2 in the domain walls and Ni²⁺ ions with S = 1 in the domains.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.87.237201

DOI:

10.1103/PhysRevLett.87.237201

PACS:

76.60.-k, 74.72.Dn, 75.30.Ds, 75.40.Gb

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Phys. Rev. Lett. 87, 237201 (2001) [4 pages]

First Time Determination of the Microscopic Structure of a Stripe Phase: Low Temperature NMR in La2NiO4.17

First Time Determination of the Microscopic Structure of a Stripe Phase: Low Temperature NMR in La₂NiO_4.17