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29 March 2024
 
  » arxiv » cond-mat/9909270

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Stripe Conductivity in La(1.775)Sr(0.225)NiO(4)
Yu. G. Pashkevich ; V. A. Blinkin ; V. P. Gnezdilov ; V. V. Tsapenko ; V. V.Eremenko ; P. Lemmens ; M. Fischer ; M. Grove ; G. Guentherodt ; L. Degiorgi ; P. Wachter ; J. M. Tranquada ; D. J. Buttrey ;
Date 17 Sep 1999
Subject Strongly Correlated Electrons | cond-mat.str-el
AbstractWe report Raman light-scattering and optical conductivity measurements on a single crystal of La(1.775)Sr(0.225)NiO(4) which exhibits incommensurate charge-stripe order. The extra phonon peaks induced by stripe order can be understood in terms of the energies of phonons that occur at the charge-order wave vector, Q_c. A strong Fano antiresonance for a Ni-O bond-stretching mode provides clear evidence for finite dynamical conductivity within the charge stripes.
Source arXiv, cond-mat/9909270
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