Non-Fermi liquid behavior in the layered NaxCoO2

Автор(и)

  • A. Zorkovská Centre of Low Temperature Physics of the P. J. Šafárik University & the Slovak Academy of Science 9 Park Angelinum, Košice 04154, Slovakia
  • J. Šebek Institute of Physics AS CR, 2 Na Slovance, Prague 18221, Czech Republic
  • E. Šantavá Institute of Physics AS CR, 2 Na Slovance, Prague 18221, Czech Republic
  • I. Bradaric The «Vinča» Institute of Nuclear Sciences, P.O. Box 522, Belgrade 11001, Serbia
  • A. Feher Centre of Low Temperature Physics of the P. J. Šafárik University & the Slovak Academy of Science 9 Park Angelinum, Košice 04154, Slovakia

DOI:

https://doi.org/10.1063/1.2747070

Ключові слова:

cobaltates, specific heat, non-Fermi liquid behavior, phase separation, magnetic susceptibility.

Анотація

The specific heat in the temperature region of 100 mK–360 K and in magnetic fields of 0 and 9 T, as well as the susceptibility from 2 to 360 K and in a magnetic field of 1 T have been measured in the layered NaxCoO2 (x = 0.65, 0.70, and 0.75) oxides. Analysis of the data revealed non-Fermi liquid behavior. The character of the observed anomalies seems to be connected to the mesoscopic phase separation, underlining the impact of disorder on the low-lying excitations in cobaltates.

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Опубліковано

2007-09-26

Як цитувати

(1)
Zorkovská, A.; Šebek, J.; Šantavá, E.; Bradaric, I.; Feher, A. Non-Fermi Liquid Behavior in the Layered NaxCoO2. Fiz. Nizk. Temp. 2007, 33, 1243-1247.

Номер

Том 33 № 11 (2007)

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