The re-entrant superconducting-normal phase boundary of the Kondo system (La, Ce)Al2

M. B. Maple, W. A. Fertig, A. C. Mota, L. E. DeLong, D. Wohlleben, R. Fitzgerald

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111 Scopus citations

Abstract

The re-entrant superconducting-normal phase boundary of the (La, Ce)Al2 system is reported. The pair breaking parameter deduced from the data increases with decreasing temperature as (-ln T) between 0.1 and 3.30°K. This behaviour suggests that the Kondo temperature TK {less-than or approximate} 0.1°K. No evidence was found for a third transition temperature down to 6 m°K.

Original languageEnglish
Pages (from-to)829-834
Number of pages6
JournalSolid State Communications
Volume11
Issue number6
DOIs
StatePublished - Sep 1972

Bibliographical note

Funding Information:
where n is the impurity concentration, N(E~) is the density of states at the Fermi level (for one spin direction), S is the impurity spin, and ln y is Euler’s constant. Expressions (1) and (2) represent a single-valued function T~(n)which describes well the experimental behavior of the *Research sponsored by the Air Force Office of Scientific Research, Air Force Systems Command, USAF, under AFOSR contract AFOSR/F-44620-72-C-0017.

ASJC Scopus subject areas

  • Chemistry (all)
  • Condensed Matter Physics
  • Materials Chemistry

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