Ground-state order and spin-lattice coupling in tetrahedral spin systems <math display="inline"> <mrow> <msub> <mrow> <mi mathvariant="normal">Cu</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> </mrow> <mrow> <msub> <mrow> <mi mathvariant="normal">Te</mi>. Prester, M., Smontara, A., Živković, I., Bilušić, A., Drobac, D., Berger, H., & Bussy, F. Physical Review B, 69(18):180401, 5, 2004.
Website abstract bibtex High-resolution ac susceptibility and thermal conductivity measurement on Cu2Te2O5X2(X=Br,Cl) single crystals are reported. For Br-sample, sample dependence prevents to distinguish between possibilities of magnetically ordered and spin-singlet ground states. In Cl-sample a three-dimensional transition at 18.5 K is accompanied by almost isotropic behavior of susceptibility and almost switching behavior of thermal conductivity. Thermal conductivity studies suggest the presence of a tremendous spin-lattice coupling characterizing Cl- but not Br-sample. Below the transition Cl-sample is in a complex magnetic state involving AF order but also the elements consistent with the presence of a gap in the excitation spectrum.
@article{
title = {Ground-state order and spin-lattice coupling in tetrahedral spin systems <math display="inline"> <mrow> <msub> <mrow> <mi mathvariant="normal">Cu</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> </mrow> <mrow> <msub> <mrow> <mi mathvariant="normal">Te</mi>},
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abstract = {High-resolution ac susceptibility and thermal conductivity measurement on Cu2Te2O5X2(X=Br,Cl) single crystals are reported. For Br-sample, sample dependence prevents to distinguish between possibilities of magnetically ordered and spin-singlet ground states. In Cl-sample a three-dimensional transition at 18.5 K is accompanied by almost isotropic behavior of susceptibility and almost switching behavior of thermal conductivity. Thermal conductivity studies suggest the presence of a tremendous spin-lattice coupling characterizing Cl- but not Br-sample. Below the transition Cl-sample is in a complex magnetic state involving AF order but also the elements consistent with the presence of a gap in the excitation spectrum.},
bibtype = {article},
author = {Prester, M and Smontara, A and Živković, I and Bilušić, Ante and Drobac, D and Berger, H and Bussy, F},
journal = {Physical Review B},
number = {18}
}
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