Effect of pressure on the quantum spin ladder material IPA-CuCl3

Autor:	Hong, Tao, Garlea, V. O., Zheludev, A., Fernandez-Baca, J., Manaka, H., Chang, S., Leao, J. B., Poulton, S. J.
Rok vydání:	2008
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Materials Science
Zdroj:	Phys. Rev. B 78, 224409 (2008)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.78.224409
Popis:	Inelastic neutron scattering and bulk magnetic susceptibility studies of the quantum S=1/2 spin ladder system IPA-CuCl3 are performed under hydrostatic pressure. The pressure dependence of the spin gap $\Delta$ is determined. At $P=1.5$ GPa it is reduced to $\Delta=0.79$ meV from $\Delta=1.17$ meV at ambient pressure. The results allow us to predict a soft-mode quantum phase transition in this system at P$_\mathrm{c}\sim 4$ GPa. The measurements are complicated by a proximity of a structural phase transition that leads to a deterioration of the sample. Comment: 5 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0809.1254 Zobrazit plný text záznamu View this record from Arxiv