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28 March 2024
 
  » pubmed » pmid15698121

 Article overview


Novel dielectric anomaly in the hole-doped La(2)Cu(1-x)Li(x)O(4) and La(2-x)Sr(x)NiO(4) insulators: signature of an electronic glassy state
Tuson Park ; Z Nussinov ; K R A Hazzard ; V A Sidorov ; A V Balatsky ; J L Sarrao ; S-W Cheong ; M F Hundley ; Jang-Sik Lee ; Q X Jia ; J D Thompson ;
Date 14 Jan 2005
Journal Phys Rev Lett, 94 (1), 017002
AbstractThe low-frequency dielectric response of hole-doped insulators La(2)Cu(1-x)Li(x)O(4) and La(2-x)Sr(x)NiO(4) shows a large dielectric constant epsilon(’) 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.
Source PubMed, pmid15698121
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