Low-temperature specific heat of the electron-doped superconductor Pr2-xCexCuO4-∂

T. E. Hargreaves, H. Noma, Jun Akimitsu, D. F. Brewer, N. E. Hussey, A. L. Thomson

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report measurements of the low-temperature specific heat of superconducting and non-superconducting Pr1.85Ce0.15CuO4 and non-superconducting Pr1.875Ce0.125CuO4 between 0.2 K and 4 K in magnetic fields up to 4 tesla. For all three samples, the zero-field specific heat C(T) consists of three contributions, a nuclear (T-2) term, a phononic (T3) term and a residual low-power term proportional to Tn where n <1. The residual term follows an unusual temperature dependence in a magnetic field, similar to that found in hole-doped cuprate superconductors, suggesting a common origin for this residual term in all doped cuprates. We discuss the possibility that this low-power term arises from disorder-induced localization of normal carriers at low temperatures.

Original languageEnglish
Pages (from-to)33-40
Number of pages8
JournalPhysica C: Superconductivity and its Applications
Volume303
Issue number1-2
Publication statusPublished - Jul 10 1998
Externally publishedYes

Fingerprint

cuprates
Superconducting materials
Specific heat
specific heat
Electrons
magnetic fields
Magnetic fields
electrons
disorders
Temperature
temperature dependence
Cuprate superconductors

Keywords

  • Electron-doped cuprates
  • Localization effects
  • Low-temperature specific heat

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Hargreaves, T. E., Noma, H., Akimitsu, J., Brewer, D. F., Hussey, N. E., & Thomson, A. L. (1998). Low-temperature specific heat of the electron-doped superconductor Pr2-xCexCuO4-∂ . Physica C: Superconductivity and its Applications, 303(1-2), 33-40.

Low-temperature specific heat of the electron-doped superconductor Pr2-xCexCuO4-∂ . / Hargreaves, T. E.; Noma, H.; Akimitsu, Jun; Brewer, D. F.; Hussey, N. E.; Thomson, A. L.

In: Physica C: Superconductivity and its Applications, Vol. 303, No. 1-2, 10.07.1998, p. 33-40.

Research output: Contribution to journalArticle

Hargreaves, TE, Noma, H, Akimitsu, J, Brewer, DF, Hussey, NE & Thomson, AL 1998, 'Low-temperature specific heat of the electron-doped superconductor Pr2-xCexCuO4-∂ ', Physica C: Superconductivity and its Applications, vol. 303, no. 1-2, pp. 33-40.
Hargreaves, T. E. ; Noma, H. ; Akimitsu, Jun ; Brewer, D. F. ; Hussey, N. E. ; Thomson, A. L. / Low-temperature specific heat of the electron-doped superconductor Pr2-xCexCuO4-∂ . In: Physica C: Superconductivity and its Applications. 1998 ; Vol. 303, No. 1-2. pp. 33-40.
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