Exact solution of the mixed spin-1/2 and spin-S Ising-Heisenberg diamond chain

62Citations
Citations of this article
10Readers
Mendeley users who have this article in their library.

Abstract

The geometric frustration in a class of the mixed spin-1/2 and spin-S Ising-Heisenberg diamond chains is investigated by combining three exact analytical techniques: Kambe projection method, decoration-iteration transformation and transfer-matrix method. The ground state, the magnetization process and the specific heat as a function of the external magnetic field are particularly examined for different strengths of the geometric frustration. It is shown that the increase of the Heisenberg spin value S raises the number of intermediate magnetization plateaux, which emerge in magnetization curves provided that the ground state is highly degenerate on behalf of a sufficiently strong geometric frustration. On the other hand, all intermediate magnetization plateaux merge into a linear magnetization versus magnetic field dependence in the limit of classical Heisenberg spin S → ∞. The enhanced magnetocaloric effect with cooling rate exceeding the one of paramagnetic salts is also detected when the disordered frustrated phase constitutes the ground state and the external magnetic field is small enough. © L. Čanová, J. Strečka, T. Lučivjanský.

Cite

CITATION STYLE

APA

Čanová, L., Strečka, J., & Lučivjanský, T. (2009). Exact solution of the mixed spin-1/2 and spin-S Ising-Heisenberg diamond chain. Condensed Matter Physics, 12(3), 353–368. https://doi.org/10.5488/CMP.12.3.353

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free