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Freezing of a Stripe Liquid

S. -H. Lee·J. M. Tranquada·K. Yamada·D. J. Buttrey·Q. Li·S. -W. Cheong
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Abstract

The existence of a stripe-liquid phase in a layered nickelate, La(1.725)Sr(0.275)NiO(4), is demonstrated through neutron scattering measurements. We show that incommensurate magnetic fluctuations evolve continuously through the charge-ordering temperature, although an abrupt decrease in the effective damping energy is observed on cooling through the transition. The energy and momentum dependence of the magnetic scattering are parametrized with a damped-harmonic-oscillator model describing overdamped spin-waves in the antiferromagnetic domains defined instantaneously by charge stripes.

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S. -H. Lee, J. M. Tranquada, K. Yamada, D. J. Buttrey, Q. Li, S. -W. Cheong. 2002-02-13. Freezing of a Stripe Liquid. https://doi.org/10.1103/physrevlett.88.126401

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