Thermodynamics of spin 12 reduced s-d model with application to (LaCe)Al2 alloys

J. Maćkowiak and M. Wiśniewski

Physica A: Statistical Mechanics and its Applications, 1994, vol. 212, issue 3, 382-397

Abstract: The Hamiltonian HK(B) of the spin 12 s-d exchange model in a uniform magnetic field B is reduced by a method previously applied to HK(0). The reduced s-d Hamiltonian Hr(B) is asymptotically equivalent in the thermodynamic limit to a mean-field hr(B), which exhibits a 2nd order phase transition at Tc if B is weak. hr(B) is applied to (LaCe)Al2 alloys. There is correspondence between theoretical and experimental curves of zero-field susceptibility χi(0, T): the theoretical χi(0, T) has a first-order pole at Tc, below the Kondo temperature TK; the experimental χie(0, T) curve has a finite maximum below TK. The zero-field theoretical specific heat of (LaCe)Al2 exhibits a finite discontinuity at Tc. Above Tc the expression for resistivity coincides with the one given by Kondo and the limiting T → 0 resistivity is finite.

Date: 1994
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/0378437194903409
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:212:y:1994:i:3:p:382-397

DOI: 10.1016/0378-4371(94)90340-9

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().