Abstract
We performed high pressure neutron diffraction experiments in two geometrically frustrated pyrochlore magnets. The soft spin ice Tb2Sn2O7 was studied up to 4.6GPa and down to 60mK. Its ordered spin ice structure with k0=0 propagation vector partly transforms under pressure into a magnetic structure with k1=(0 0 1). The reduction of the total ordered Tb moment with respect to ambient pressure suggests that spin liquid fluctuations are also enhanced by pressure. The pressure-induced state is discussed by considering the influence of both isotropic pressure and stress. In contrast, in the true spin ice Ho2Ti2O7, no effect of pressure is observed up to 6GPa and down to 1.4K.
| Original language | English |
|---|---|
| Pages (from-to) | 3-7 |
| Number of pages | 5 |
| Journal | High Pressure Research |
| Volume | 30 |
| Issue number | 1 |
| DOIs | |
| State | Published - Mar 2010 |
| Externally published | Yes |
Funding
This experiment is one of the last experiments performed with I. Goncharenko. This article is dedicated to his memory. We thank A. Forget for the sample preparation. H. Cao acknowledges support from le Triangle de la Physique.
| Funders | Funder number |
|---|---|
| Triangle de la Physique |
Keywords
- Geometrical frustration
- High pressure
- Neutron diffraction
- Spin ice