Spontaneous rearrangement of the checkerboard charge order to stripe order in La1.5Sr0.5NiO4

Preprint

12 November 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0202288

Abstract

The charge ordering in La1.5Sr0.5NiO4 has been studied with neutron diffraction technique. An interesting rearrangement of the charge ordering was observed as a function of temperature. With decreasing temperature, a checkerboard-type charge order is formed below T{CO-C} ~ 480 K. It is, however, taken over by the stripe-type charge order with an incommensurability twice as large as that of the spin order below T{CO-IC} ~ 180 K. Surprisingly, the stripe phase persists up to x = 0.7 for highly hole-doped samples of Nd{2-x}Sr{x}NiO{4} with 0.45 < x < 0.7.

Keywords

OBSERVED AS A FUNCTION
NEUTRON DIFFRACTION
LA1.5SR0.5NIO4
REARRANGEMENT
CHARGE ORDER
CHECKERBOARD
SPIN ORDER
STRIPE
NIO

All Related Versions

Version 1, 2002-02-18, ArXiv
Version 2, 2002-11-12, ArXiv
Published version: Physical Review B, 67 (1), 014511.

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