Novel Dielectric Anomaly in the Hole-DopedLa2Cu1−xLixO4andLa2−xSrxNiO4Insulators: Signature of an Electronic Glassy State

2004/04/19 by Tuson Park, Z. Nussinov, Zohar Nussinov +13 · 2 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Dielectric properties of ceramics #Multiferroics and related materials #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.94.017002

published as Phys. Rev. Lett. 94, 017002 (2005) · 5 pages, 4 figures

arxiv created 2004/04/19 · openalex publication_date 2005/01/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The low-frequency dielectric response of hole-doped insulators La₂Cu_1\ensuremath-xLi_xO₄ and La_2\ensuremath-xSr_xNiO₄ shows a large dielectric constant \ensuremathε^\ensuremath' at high temperature and a steplike drop by a factor of 100 at a material-dependent low temperature T_f. T_f increases with frequency, and the dielectric response shows universal scaling in a Cole-Cole plot, suggesting that a charge-glass state is realized both in the cuprates and in the nickelates.

Citations

• Dispersion and Absorption in Dielectrics I. Alternating Current Characteristics
• Melting of Quasi-Two-Dimensional Charge Stripes inLa5/3Sr1/3NiO4
• Suppression of Antiferromagnetic Order by Light Hole Doping inLa2Cu1−xLixO4: AL<mml:mprescripts/>139aNQR Study

Cited by

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• Charge order, dielectric response, and local structure of La5/3Sr1/3NiO4 system