Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2009-02-12
High Pressure Research, Volume 29, Issue 2 June 2009, pages 335 - 343
Physics
Condensed Matter
Strongly Correlated Electrons
9 pgs, 2 figs, accepted by High Pressure Research
Scientific paper
10.1080/08957950802564676
The pressure-dependence of the hidden order phase transition of URu2Si2 is shown to depend sensitively upon the quality of hydrostatic pressure conditions during electrical resistivity measurements. Hysteresis in pressure is demonstrated for two choices of pressure medium: the commonly-used mixture of 1:1 Fluorinert FC70/FC77 and pure FC75. In contrast, no hysteresis is observed when the pressure medium is a 1:1 mixture of n-pentane/isoamyl alcohol, as it remains hydrostatic over the entire studied pressure range. Possible ramifications for the interpretation of the temperature-pressure phase diagram of URu2Si2 are discussed.
Butch Nicholas P.
Jeffries Jason R.
Maple Brian M.
Zocco Diego A.
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