Magnetization and specific heat of the dimer system CuTe2O5

TL;DR

This study investigates the magnetic and thermal properties of CuTe2O5, comparing experimental data with two theoretical models, and finds that magnetization aligns well with a 2D coupled dimer model.

Contribution

The paper provides experimental magnetization and specific heat data for CuTe2O5 and compares these results to two theoretical models, favoring the 2D coupled dimer model based on magnetization.

Findings

Magnetization data agrees with the 2D coupled dimer model.

Specific heat measurements do not distinguish between models.

Experimental results support the 2D dimer structure hypothesis.

Abstract

We report on magnetization and specific heat measurements on single-crystalline CuTe2O5. The experimental data are directly compared to theoretical results for two different spin structures, namely an alternating spin-chain and a two-dimensional (2D) coupled dimer model, obtained by Das et al. [Phys. Rev. B 77, 224437 (2008)]. While the analysis of the specific heat does not allow to distinguish between the two models, the magnetization data is in good agreement with the 2D coupled dimer model.